2025 RWUMP Part 4 City of Rialto Appendix E
E-1: UWMP Compliance Checklist
Order 2025 Guidebook Location Water Code
Section Summary as Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
1 Chapter 1 10615 A plan shall describe and evaluate sources of supply, reasonable and practical efficient uses, reclamation and demand management activities. Introduction and overview n/a Ch 5, Sections
5.4, 5.6, 5.8
1 Chapter 1 10630.5
Each plan shall include a simple description of the Supplier’s plan including water availability, future requirements, a strategy for meeting needs, and other pertinent information. Additionally, a Supplier may also choose to include a simple description at the beginning of each chapter.
Plan preparation n/a
Simple
description
provided at
beginning of
each section.
2.1 Section 2.1 10620(b) Every person that becomes a Suppl ier shall adopt UWMP within one year after it has become a Supplier. Plan preparation n/a Part 1, Regional Context
2.5 Section 2.5 10644
Supplier shall report the Public Water Systems number, volume of delivered water, and number of connections that are included in this UWMP. Plan preparation 2-1 DWR Table 2-1
2.5 Section 2.5 10644 Supplier shall report if this UWMP is an individual UWMP and whether the Supplier belongs to a regional UWMP or regional alliance. Plan preparation 2-2 DWR Table 2-2
2.5 Section 2.5 10644 Supplier shall report whether the data is in fiscal or calendar years and the units of measure used for reporting water volumes. Plan preparation 2-3 DWR Table 2-3
2.4 Section 2.4 10642
Provide supporting documentation that the Supplier has encourage d active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of the plan and contingency plan.
Plan preparation n/a Part 1, Regional
Context
2.4 Section 2.4.2 10620(d)(3) Coordinate the preparation of its plan with other appropriate agencies in the area, including other Suppliers that share a common source, water management agencies, and relevant public agencies, to the extent practicable. Plan preparation n/a Part 1, Regional Context
2.4 Section 2.4.1 10631(h)
Retail Suppliers will include documentation that they have provided their Wholesale Supplier(s)—if any—with water use projections from that source. Plan preparation 2-4 R DWR Table 2-4R
2.4 Section 2.4.1 10631(h) Wholesale Suppliers will provide their Suppliers with identification and quantification of the existing and planned sources of water available from the Wholesale Supplier to the Supplier during various water year types. Plan preparation 2-4 W N/A 3 Chapter 3.0 10631(a) Describe the Supplier service area. System description n/a Section 5.1,
Part 1 Regional
Context
3.3 Section 3.3 10631(a) Describe the climate of the Suppl ier’s service area. System description n/a Section 5.1 +
Figure 5-1
reference.
3.4 Section 3.4.1 10631(a) Provide the current and proje cted service area populations for 2030, 2035, 2040, 2045 and optionally 2050. System description 3-1 Section 5.1
3.4 Section 3.4.2 10631(a) Describe other social, economic, a nd demographic factors affecting the Supplier’s water management planning. System description n/a Section 5.1
3.5 Section 3.5 10631(a)
Describe the land uses within the service area… include the current and projected land uses within the existing or anticipated service area affecting the Supplier’s water management planning. Describe the land uses within the service area.
System description and
baselines n/a Section 5.1
4.2 Sections 4.2.3 and 4.2.4 10631(d)(1) Quantify past, cu rrent, and projected water use, identifying the uses among water use sectors. System water use 4-1 and 4-2 Section 5.2 +
DWR Tables 4-1
and 4-2
4.3 Section 4.3.1 10631(d)(3)(A) Report the distribution system water loss for each of the five years preceding the plan update. System water use 4-5 Section 5.2.4 + DWR Table 4-5
4.3 Section 4.3.2 10631(d)(3)(C) Retail Suppliers shall p rovide data to show the distribution loss standards were met. System water use 4-6 Section 5.2.4 + DWR Table 4-6
4.2 Section 4.2.5.4 10631.1(a) Include projected water use needed for lower income housing projected in the service area of the Supplier. System water use 4-3 Section 5.2. 3.
4.2 Section 4.2.5.3 10631(d)(4)(A) In projected water use , include estimates of water savings from adopted codes, plans, and other policies or laws. System water use 4-3 Sections 5.2.5
+ 5.8.
4.2 Section 4.2.5.3 10631(d)(4)(B) Provide citations of co des, standards, ordinances, or plans used to make water use projections. System water use 4-3 Sections 5.2.5 + 5.3.
4.2 Section 4.2.5.3 10631(d)(4)(B)(ii)
To the extent that a Supplier reports the information described in subparagraph (A), an urban water Supplier shall… Indicate the extent that the water use projections consider savings from codes, standards, ordinances, or transportation and land use plans. Water use projections that do not account for these water savings shall be noted of that fact.
System water use 4-3 Section 5.2.2
4.2 Section 4.2.5.6 10635(b) Demands under climate change considerations must be included as part of the drought risk assessment. System water use n/a Sections
5.5–5.6
5.1 Section 5.1 10608.36 Wholesale Suppliers shall include an assessment of present and proposed future measures, programs, and policies to help their Retail Suppliers achieve targeted water use reductions. Baselines and targets n/a N/A Order 2025 Guidebook Location Water Code
Section Summary as Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
5.2 Section 5.2 10608.4
Retail Suppliers shall report on their compliance in meeting their water use targets. Reporting requirements will vary depending on whether the Supplier:
- Was considered an urban retail water supplier in 2020, - Met its 2020 target in 2020, or
- Was part of a merger or consolidation since 2020.
Chapter 5 Subsections 5.2.1, 5.2.2, and 5.2.3 address each of these situations.
Baselines and targets 5-1 Section 5.3 +
Table 5-9
6.1 Section 6.1 10631(b)(2)
When multiple sources of water supply are identified, describe the management of each supply in relationship to other identified supplies. System supplies n/a Section 5.4
6.1 Sections 6.1 and 6.2 10631(b)(1) Provide a discussion of anticipated supply availability under a normal, single dry year, and a drought lasting five years, as well as more frequent and severe periods of drought, including changes in supply due to climate change. System supplies n/a Sections
5.5–5.6.
6.2 Section 6.2.2 10631(b)(4)(C)
Indicate whether groundwater is an existing or planned source of water available to the Supplier. If groundwater is identified as an existing or planned source of water… (include) a detailed description and analysis of the location, amount and sufficiency of groundwater pumped by the Supplier for the past five years.
Water supplies and recycled
water 6-1 Section 5.4.2 +
DWR Table 6-1
6.2 Section 6.2.2 10631(b)(4)(A) Indicate whether a groundwater sustainability plan or groundwater management plan has been adopted by the Supplier or if there is any other specific authorization for groundwater management. Include a copy of the plan or authorization. System supplies n/a Section 5.4.2,
Part 1, Regional
Context
6.2 Section 6.2.2 10631(b)(4)(B) Describe the groundwater basin. System supplies n/a Section 5.4.2
6.2 Section 6.2.2 10631(b)(4)(B)
Indicate if the basin has been adjudicated and include a copy of the court order or decree and a description of the amount of water the Supplier has the legal right to pump. System supplies n/a Section 5.4.2
6.2 Section 6.2.2 10631(b)(4)(B) For unadjudicated basins… (include) information as to whether DWR has identified the basin as a high- or medium-priority basin in the most current official departmental bulletin… Water supplies and recycled
water n/a Section 5.4.2
6.2 Section 6.2.2 10631(b)(4)(B) For unadjudicated basins… describe efforts by the Supplier to coordinate with sustainability or groundwater agencies to achieve sustainable groundwater conditions.
Water supplies and recycled
water n/a Section 5.4.2
6.2 Section 6.2.2. 10631(b)(4)(C) If groundwater is identified as an existing or planned source of water… (include) a detailed description and analysis of the location, amount and sufficiency of groundwater pumped by the Supplier for the past five years. System supplies n/a Section 5.4.2 + DWR Table 6-1
6.2 Section 6.2.2 10631(b)(4)(D) Provide a detailed descr iption and analysis of the amount and location of groundwater that is projected to be pumped. System supplies 6 -9 DWR Table 6-9
6.1 Section 6.1 10631(b)
Identify and quantify the existing and planned sources of water available for 2025, 2030, 2035, 2040, 2045 and optionally 2050. System supplies 6-8 and 6-9 DWR Tables 6-8
and 6-9
6.2 Section 6.2.7 10631(c) Describe the opportunities for e xchanges or transfers of water on a short-term or long-term basis. System supplies n/a Sections 5.4.6 + 5.4.6.1.
6.2 Section 6.2.5 10633(a) Describe the wastewater collection and treatment systems in the Supplier’s service area with quantified amount of collection and treatment and the disposal methods.
System supplies (recycled
water) 6-2
Section 5.4.5 +
DWR Tables 6-2
and 6-3
6.2 Section 6.2.5 10633(b) Describe the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project.
System supplies (recycled
water) 6-3
Section 5.4.5 +
DWR Tables 6-2
and 6-3
6.2 Section 6.2.5 10633(c) Describe the recycled water curren tly being used in the Supplier's service area. System supplies (recycled water) 6-4 Section 5.4.5.1.
6.2 Section 6.2.5 10633(d) Describe and quantify the potential uses of recycled water and provide a determination of the technical and economic feasibility of those uses.
System supplies (recycled
water) 6-4 Section 5.4.5.1.
6.2 Section 6.2.5 10633(e) Describe the projected use of recycled water within the Supplier's service area at the end of 5, 10, 15, and 20 years, and describe the actual use of recycled water in comparison to uses previously projected.
System supplies (recycled
water) 6-4 and 6-5 Section 5.4.5
and 5.4.7
6.2 Section 6.2.5 10633(f) Describe the actions that may be taken to encourage the use of recycled water and the projected results of these actions in terms of acre-feet of recycled water used per year.
System supplies (recycled
water) 6-6 Section 5.4.5.1.
6.2 Section 6.2.5 10633(g) Provide a plan for optimizin g the use of recycled water in the Supplier's service area. System supplies (recycled water) n/a Section 5.4.5.1.
6.2 Section 6.2.6 10631(g) Describe desalinated water proj ect opportunities for long-term supply. System supplies 6- 7 N/A
6.2 Section 6.2.10 10631(f) Describe the expected future water supply projects and programs that may be undertaken by the water Supplier to address water supply reliability in average, single-dry, and for a period of drought lasting five consecutive water years. System supplies 6-7 Section 5.4.6.2
6.3 Section 6.3 and Appendix
O 10631.2(a) The UWMP must include energy information, a s stated in the code, that a Supplier can readily obtain. System suppliers, energy intensity
O-1A, O-1B, O-
1C, and O-2 Section 5.4.8
Order 2025 Guidebook Location Water Code
Section Summary as Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
7.1 Section 7.1 10634 Provide information on the quality of existing sources of water available to the Supplier and the manner in which water quality affects water management strategies and supply reliability.
Water supply reliability
assessment n/a Section 5.5.1
7.2 Section 7.2 10635(a)
Service Reliability Assessment: Assess the water supply reliability during normal, dry, and a drought lasting five consecutive water years by comparing the total water supply sources available to the Supplier with the total projected water use over the next 20 years.
Water supply reliability
assessment
7-2, 7-3, and 7-
4 Section 5.5 +
DWR Tables 7-
2, 7-3, 7-4
7.2 Section 7.2.3 10620(f) Describe water management tools and options to maximize resources and minimize the need to import water from other regions.
Water supply reliability
assessment n/a Section 5.5
7.3 Section 7.3 10635(b) Provide a drought risk assessment as part of information considered in developing the demand management measures and water supply projects.
Water supply reliability
assessment n/a Sections
5.5–5.6
7.3 Section 7.3 10635(b)(1) Include a description of the data, methodology, and basis for one or more supply shortage conditions that are necessary to conduct a drought risk assessment for a drought period that lasts five consecutive years.
Water supply reliability
assessment n/a Section 5.6 DRA
7.3 Section 7.3 10635(b)(2) Include a determination of t he reliability of each source of supply under a variety of water shortage conditions. Water supply reliability assessment n/a Section 5.6
7.3 Section 7.3 10635(b)(3) Include a comparison of the total water supply sources available to the Supplier with the total projected water use for the drought period.
Water supply reliability
assessment 7-5 Section 5.6,
DWR Table 7-5
7.3 Section 7.3 10635(b)(4) Include considerations of the historical drought hydrology, plausible changes on projected supplies and demands under climate change conditions, anticipated regulatory changes, and other locally applicable criteria.
Water supply reliability
assessment n/a Sections 5.5.1
+ 5.6.
8 Chapter 8 10632(a) Provide a water shortage contingency plan (WSCP) with specified elements below. Water shortage contingency planning n/a Appendix E-6
8 Chapter 8 10632(a)(1) Provide an analysis of water supp ly reliability (from Guidebook Chapter 7) in the WSCP. Water shortage contingency planning n/a Appendix E-6
8.2 Section 8.2 10632(a)(2)(A) Provide the written decision-making process and other methods that the Supplier will use each year to determine its water reliability.
Water shortage contingency
planning n/a Appendix E-6
8.2 Section 8.2 10632(a)(2)(B) Provide data and methodology to evaluate the Supplier’s water reliability for the current year and one dry year pursuant to factors in the code.
Water shortage contingency
planning n/a Appendix E-6
8.3 Section 8.3 10632(a)(3)(A)
Define six standard water shortage levels of 10%, 20%, 30%, 40%, 50% shortage, and greater than 50% shortage.
These levels shall be based on supply conditions, including percent reductions in supply, changes in groundwater levels, changes in surface elevation, or other conditions. The shortage levels shall also apply to a catastrophic interruption of supply.
Water shortage contingency
planning n/a Appendix E-6
8.3 Section 8.3 10632(a)(3)(B)
Suppliers with an existing WSCP that uses different water shortage levels must cross reference their categories with the six standard categories.
Water shortage contingency
planning 8-1 Appendix E-6,
DWR Table 8-1
8.4 Section 8.4 10632(a)(4)(A) Suppliers with WSCPs that align with the defined shortage levels must specify locally appropriate supply augmentation actions.
Water shortage contingency
planning 8-2 Appendix E-6,
DWR Table 8-2
8.4 Section 8.4 10632(a)(4)(B) Specify locally appropriat e demand reduction actions to adequately respond to shortages. Water shortage contingency planning 8-3 Appendix E-6,
DWR Table 8-3
8.4 Section 8.4 10632(a)(4)(C) Specify locally appropriat e operational changes. Water shortage contingency planning 8-2 Appendix E-6,
DWR Table 8-2
8.4 Section 8.4 10632(a)(4)(D) Specify additional mandatory prohibitions against specific water use practices that are in addition to State-mandated prohibitions are appropriate to local conditions.
Water shortage contingency
planning Table 8-3 Appendix E-6,
DWR Table 8-3
8.4 Section 8.4 10632(a)(4)(E) Estimate the extent to wh ich the gap between supplies and demand will be reduced by implementation of the action. Water shortage contingency planning 8-2 and 8-3
Appendix E-6,
DWR Tables 8-2
and 8-3
8.4 Section 8.4.6 10632.5 The UWMP shall include a seismic r isk assessment and mitigation plan. Water shortage contingency plan n/a Appendix E-6
8.5 Section 8.5 10632(a)(5)(A) Suppliers must describe that they will inform customers, the public and others regarding any current or predicted water shortages.
Water shortage contingency
planning n/a Appendix E-6
8.5 Section 8.5 10632(a)(5)(B),
10632(a)(5)(C)
Suppliers must describe that they will inform customers, the public and others regarding any shortage response actions triggered or anticipated to be triggered and other relevant communications.
Water shortage contingency
planning n/a Appendix E-6
8.6 Section 8.6 10632(a)(6) Retail Supplier must describe how it will ensure compliance with and enforce provisions of the WSCP. Water shortage contingency planning n/a Appendix E-6
8.7 Section 8.7 10632(a)(7)(A) Describe the legal authori ty that empowers the Supplier to enforce shortage response actions. Water shortage contingency planning n/a Appendix E-6
8.7 Section 8.7 10632(a)(7)(B) Provide a statement that the Supplier will declare a water shortage emergency per Water Code Chapter 3. Water Shortage Emergencies .
Water shortage contingency
planning n/a Appendix E-6
8.7 Section 8.7 10632(a)(7)(C) Provide a statement that the Supplier will coordinate with any city or county within which it provides water for the possible proclamation of a local emergency.
Water shortage contingency
planning n/a Appendix E-6
8.8 Section 8.8 10632(a)(8)(A) Describe the potential rev enue reductions and expense increases associated with activated shortage response actions. Water shortage contingency planning n/a Appendix E-6
8.8 Section 8.8 10632(a)(8)(B) Provide a description of mitigation actions needed to address revenue reductions and expense increases associated with activated shortage response actions.
Water shortage contingency
planning n/a Appendix E-6
Order 2025 Guidebook Location Water Code
Section Summary as Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
8.8 Section 8.8 10632(a)(8)(C) Retail Suppliers must describe the cost of compliance with Water Code Chapter 3.3, Excessive Residential Water Use During Drought .
Water shortage contingency
planning n/a Appendix E-6
8.9 Section 8.9 10632(a)(9) Retail Suppliers must describe the monitoring and reporting requirements and procedures that ensure appropriate data are collected, tracked, and analyzed for purposes of monitoring customer compliance.
Water shortage contingency
planning n/a Appendix E-6
8.10 Section 8.10 10632(a)(10) Describe reevaluation and improvement procedures for monitoring and evaluation the WSCP to ensure risk tolerance is adequate and appropriate water shortage mitigation strategies are implemented.
Water shortage contingency
planning n/a Appendix E-6
8.11 Section 8.11 10632(b) Analyze and define water features that are artificially supplied with water, including ponds, lakes, waterfalls, and fountains, separately from swimming pools and spas.
Water shortage contingency
planning n/a Appendix E-6
8.12 Section 8.12 10632(c) Make available the WSCP to customers and any city or county where it provides water within 30 days after adoption of the plan.
Water shortage contingency
planning n/a Appendix E-6
9.1 Sections 9.1 10631(e)(1) Retail Suppliers shall provide a description of the nature and extent of each demand management measure implemented over the past five years. The description will address specific measures listed in code.
Demand management
measures n/a Section 5.8.1
9.2 Sections 9.2 10631(e)(2) Wholesale Suppliers shall describe specific demand management measures listed in code, their distribution system asset management program, and Supplier assistance program.
Demand management
measures n/a N/A
10 Chapter 10 10608.26(a) Retail Suppliers shall conduct a public hearing to discuss adoption, implementation, and economic impact of water use targets (recommended to discuss compliance).
Plan adoption, submittal, and
implementation n/a Section 5.9.1
and 5.9.2
10.2 Section 10.2.1 10621(b) Notify, at least 60 days prior to the public hearing, any city or county within which the Supplier provides water that the Supplier will be reviewing the UWMP and considering amendments or changes to the plan.
Plan adoption, submittal, and
implementation 10-1 DWR Table 10-1
10.4 Section 10.4 10621(f) Each urban water Supplier shal l update and submit its 2025 plan to DWR by July 1, 202 6. Plan adoption, submittal, and implementation n/a Section 5.9.3
10.2 Sections 10.2.2, 10.3, and
10.5 10642 Provide supporting documentation that the Supplier made the UWMP and WSCP available for public inspection, published notice of the public hearing, and held a public hearing about the UWMP and WSCP.
Plan adoption, submittal, and
implementation n/a Sections
5.9.1–5.9.2
10.2 Section 10.2.2 10642 The Supplier is to provide the time and place of the hearing to any city or county within which the Supplier provides water.
Plan adoption, submittal, and
implementation 10-1 Sections
5.9.1–5.9.2
10.3 Section 10.3.2 10642 Provide supporting documentatio n that the UWMP and WSCP has been adopted as prepared or modified. Plan adoption, submittal, and implementation n/a Secions
5.9.1–5.9.2
10.4 Section 10.4 10644(a) Provide supporting documentati on that the Supplier has submitted their UWMP to the California State Library. Plan adoption, submittal, and implementation n/a Sections 5.9.3
10.4 Section 10.4 10644(a)(1) Provide supporting documentation that the Supplier has submitted their UWMP to any city or county within which the Supplier provides water no later than 30 days after adoption.
Plan adoption, submittal, and
implementation n/a Section 5.9.3
10.4 Sections 10.4.1 and
10.4.2 10644(a)(2) The UWMP, or amendments to the UWMP, submi tted to DWR shall be submitted electronically. Plan adoption, submittal, and implementation n/a Section 5.9.3
10.7 Section 10.7.2 10644(b) If revised, submit a copy of the WSCP to DWR within 30 days of adoption. Plan adoption, submittal, and implementation n/a Section 5.9.3
10.5 Section 10.5 10645(a) Provide supporting documentation that, not later than 30 days after filing a copy of its UWMP with DWR, the Supplier has or will make the plan available for public review during normal business hours.
Plan adoption, submittal, and
implementation n/a Section 5.9.4
10.5 Section 10.5 10645(b) Provide supporting documentation that, not later than 30 days after filing a copy of its WSCP with DWR, the Supplier has or will make the plan available for public review during normal business hours.
Plan adoption, submittal, and
implementation n/a Section 5.9.4
10.6 Section 10.6 10621(c) If Supplier is regulated by the Public Utilities Commission, include its plan and contingency plan as part of its general rate case filings.
Plan adoption, submittal, and
implementation n/a NA
2025 RWUMP Part 4 City of Rialto Appendix E
E-2: Public Outreach
2025 RWUMP Part 4 City of Rialto Appendix E
E-3: Resolutions
2025 RWUMP Part 4 City of Rialto Appendix E
E-4: Agreements
Not Used. The City of Rialto does not have any relevant Agreements referenced in their UWMP.
See Part 3 Appendix B for Regional agreements that apply to the City of Rialto. 2025 RWUMP Part 4 City of Rialto Appendix E
E-5: DWR Tables
CA3610038 City of Rialto 12,336 8,942
12,336 8,942
Submittal Table 2-1 Retail: Public Water Systems
Add additional rows as needed
NOTES:
Volume of Water
Supplied 2025 (AF)
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
Total
Public Water System
Number
Public Water System
Name
Number of Municipal
Connections 2025
Select
One
Name of Regional Alliance or
RUWMP (Drop Down List)
San Bernardino Valley Municipal
Water District
NOTES:
Submittal Table 2-2: Plan Identification
Type of Plan
Individual UWMP
If Water Supplier is also a member of a SB X7-7
Regional Alliance, select name from the drop-down.
Regional Urban Water Management Plan (RUWMP)
If Supplier selected RUWMP, select name from the
drop-down.
Supplier is a wholesale supplier
Supplier is a retail supplier
UWMP Tables are in calendar years
UWMP Tables are in fiscal years
Unit AF
Submittal Table 2-3: Supplier Identification
Type of Supplier (select one or both)
Fiscal or Calendar Year (select one)
If using fiscal years provide month and date that the fiscal year begins (mm/dd)
Units of measure used in UWMP
(Select from the drop down list).
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent
throughout the UWMP as reported in Submittal Table 2-3.
NOTES:
Submittal Table 2-4 Retail: Water Supplier Information Exchange Water Code Section 10631(h)
The retail Supplier has informed the following wholesale supplier(s) of projected water use.
Wholesale Water Supplier Name
Add additional rows as needed
San Bernardino Valley Municipal Water District
NOTES:
10631(h) An urban water supplier that relies upon a wholesale agency for a source of water shall provide the wholesale agency with water use projections from that agency for that source of water in five-year increments to 20 years or as far as data is available. 2025 2030 2035 2040 2045 2050(opt)
59,264 67,923 68,802 69,680 70,559 71,437
Submittal Table 3-1 Retail: Population - Current and Projected Water Code Section 10631(a)
Population
Served
NOTES:
CWC 10631(a) describe the current and projected population of the service area including current and projected population…
Use Type
Drop down list
May select each use multiple times
These are the only use types that will be recognized by the WUEdata online submittal tool
Potable or Non-Potable
(OPTIONAL)
Drop down list
Volume (AF)
Single Family Potable 4,501
Multi-Family Potable 1,071
Commercial Potable 1,691
Institutional/Governmental Potable 338
Other (optional) Hydrant Potable 59
Landscape Potable 1,281
8941
0 8,941Total
Submittal Table 4-1 Retail: Total Uses for Potable and Non-Potable Water — Actual Water Code Section 10631(d)(1)
NOTES:
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3. 2025 Actual Water Use
Add additional rows as needed
Subtotal Potable
Subtotal Non-Potable
Additional
Description
(as needed)
Use Type
Drop down list
May select each use multiple times
These are the only Use Types that will be
recognized by the WUEdata online
submittal tool
Potable or Non-
Potable
(OPTIONAL)
Drop down list
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 opt (AF)
Single Family Potable 5,268 5,324 5,380 5,436 5,492
Multi-Family Potable 1,111 1,115 1,119 1,123 1,128
Commercial Potable 854 865 876 887 897
Institutional/Governmental Potable 334 334 334 334 334
Landscape Potable 1,192 1,246 1,300 1,354 1,408
Distribution System Water Loss Potable 701 711 721 731 741 Landscape Non-Potable 15 15 15 15 15
9,460 9,595 9,730 9,865 10,000
15 15 15 15 15
9,475 9,610 9,745 9,880 10,015
Add additional rows as needed.
Submittal Table 4-2 Retail: Total Uses for Potable, and Non-Potable Water — Projected Water Code Section 10631(d)(1)
Projected Water Use
(Report To the Extent that Records are Available)
Additional
Description
(as needed)
CWC 10631(d)(1) For an urban retail water supplier, quantify, to the extent records are available... projected water use…identifying the uses among water use sectors…
NOTES:
Total
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
Subtotal Non-Potable
Subtotal Potable
Are Future Water Savings Included in Projections?
Drop down list (y/n) Yes
If "Yes" to above, state the section or page number, in the cell to the right, where citations of the codes, ordinances, or otherwise are utilized in demand projections are found.
Optional Suppliers may complete Optional Submittal Table 4-4 R to quantify the expected savings.
Section 5.2.2
Are Lower Income Residential Demands Included In Projections? Drop down list (y/n) Yes
Optional If the method for accounting Lower Income Residential Demands has been included, provide page number where this accounting can be found.
Submittal Table 4-3 Retail: Inclusion in Water Use Projections Water Code Section 10631 (a), 10631 (d)(4)(A), and 10631 (d)(4)(B) NOTES:
DWR NOTES: Additional guidance is provided in Appendix K.
Public Water System ID # Reported
in Table 2-1 R Reporting Period Submitted to DWR Water
Loss Audit Program (yes/no)
2020 Yes
2021 Yes
2022 Yes
2023 Yes
2024 Yes
CWC 10631(d)(3) (A) The distribution system water loss shall be quantified for each of the five years preceding the plan update, in accordance with rules adopted pursuant to Section 10608.34.
Submittal Table 4-5 Retail: Water Loss Audit Reporting
Water Code Section 10631(d)(3)(A)
CA3610038
DWR NOTES: Suppliers will provide a link to the WUEdata submittals of their Water Loss Audit Reports.
NOTES:
Report submittal status for all five years for each Public Water System as available.
Add rows as needed
2028 Real Water Loss
Standard per Unit per
day
Units for Real
Water Loss
Drop down list
Number of Units
(Connections or
Miles corresponding
with units selected)
Volume of Total
Real Loss
(from AWWA
Water Loss Audit)
(AF)
2028 Apparent Water
Loss Standard per
Unit per Day
Units for
Apparent Water
Loss
Number of
Connections
Volume of Total
Apparent Loss
(from AWWA Water
Loss Audit)
(AF)
CA3610038 Yes 18.4
Gallons per
Service
Connection per
Day (GPSCD)
12451 433 31.0 21.1
Gallons per
Service
Connection per
Day (GPSCD)
12451 197 14.1
Submittal Table 4-6 Retail: Progress Towards 2028 Water Loss Standard Water Code Section 10631(d)(3)(C)
NOTES:
Apparent Water Loss
Did the Water Board
Calculate a Water Loss
Standard for this Public
Water System? (y/n)
If no, Supplier will not
complete this row.
Real Water Loss
Water Board's Calculated Water Loss Standards
DWR NOTES: Units of measure (AF, CCF, MG) for Water Loss MUST remain consistent with units reported in Submittal Table 2-3. The units reported in Submittal Table 2-3 are used in this table's calculations.
Public Water
System ID #
Reported in
Submittal Table 2-1
R
Add additional rows as needed.
Most Recent AWWA Water Loss
Real Water
Loss Per Unit
per Day
Most Recent AWWA Water Loss Audit
Apparent Water
Loss Per Unit per
Day
State Water Board Standard State Water Board Standard
Actual 2025
GPCD
(From SB X7-7
Compliance
Form)
Did Supplier
meet the 2020
Target in 2025?
No Individual
Target 171 143 Yes 135 Yes
10608.40 Urban water retail suppliers shall report to the department on their progress in meeting their urban water use targets as part of their urban water management plans submitted pursuant to Section 10631.
Submittal Table 5-1 Retail: SB X7-7 2020 Target Progress Water Code Section 10608.40
NOTES:
Did Supplier
Achieve
Targeted
Reduction for
2020?
Actual 2020
GPCD
2020
Target
Regional
Alliance Target
or Individual
Target?
Drop down list
DWR NOTES:
Suppliers calculating a 2025 GPCD will need to complete and submit SB X 7-7 Compliance Tables to verify the use of SB X7-7 Methodologies.
Suppliers that were part of a merger or consolidation since 2020 see Chapter 5 and Appendix P for guidance.
NA=Not Applicable
Check the box if the Supplier was not an Urban Water Supplier during or before the 2020 UWMP reporting cycle. Proceed to the next table.
Only for suppliers that did not
meet the Target in 2020
See DWR NOTES below.
Was Supplier
part of a merger
or consolidation
since 2020?
Groundwater Type
Drop Down List
May use each category
multiple times
Potable or
Non-Potable
(OPTIONAL)
Drop down list
Location or Basin Name 2021 (AF) 2022 (AF) 2023 (AF) 2024 (AF) 2025 (AF) Alluvial Basin Potable SBB (Bunker Hill) 2209 1734 1384 1 670 2311 Alluvial Basin Potable SBB (Bunker Hill via Baseline 1357 1405 1654 1591 882 Alluvial Basin Potable SBB (Lytle) 1692 1273 1067 1244 156 3 Alluvial Basin Potable Rialto-Colton 1984 2112 3914 4259 3 548 Alluvial Basin Potable Riverside North 617 1532 1301 804 1458 7,859 8,056 9,320 9,568 9,762
Add additional rows as needed
Submittal Table 6-1 Retail: Groundwater Volume Pumped
Water Code Section 10631(4) and 10631(4)(c)
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
NOTES
Total
Check the box if the Supplier does not pump groundwater.
Proceed to the next table.
Check the box if all or part of the groundwater described below is desalinated. (OPTIONAL) Name of Wastewater
Collection Agency
Wastewater
Volume Metered
or Estimated?
OPTIONAL
Drop Down List
Volume of
Wastewater
Collected from
UWMP Service
Area 2025 (AF)
Name of Wastewater
Treatment Plant (WWTP)
and Place ID Number
Drop down list
Is WWTP Located
Within UWMP
Area?
Drop Down List
City of Rialto Estimated 3,332 Rialto WWRF, Place ID
259149 Yes
3,332
Check the box if there is no wastewater collection system.
Proceed to the next table.
NOTES:
Submittal Table 6-2 Retail: Wastewater Collected W ithin Service Area Water Code Section 10633(a)
Percentage of 2025 service area population served by wastewater collection system (OPTIONAL)
Percentage of 2025 service area served by wastewater collection system (OPTIONAL)
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
Additional Guidance : See Appendix M, Section M.21 for detailed guidance on this table.
Wastewater Collection Recipient of Collected Wastewa ter Total Wastewater Received from UWMP
Service Area in 2025:
Add additional rows as needed
City Name 60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
City of Calimesa Yes No
City of Colton Yes No
City of Fontana Yes Yes
City of Grand Terrace Yes No
City of Highland Yes No
City of Loma Linda Yes No
City of Redlands Yes No
City of San Bernardino Yes No
City of Yucaipa Yes No
County Name
Drop Down List
60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
San Bernardino County Yes Yes
Riverside County Yes No
Submittal Table 10-1 Retail: Notification to Cities and Counties Water Code Section 10621(b) and 10642
Add additional rows as needed
Add additional rows as needed
NOTES: Notification was also provided to local water suppliers, universities, school districts, and government agencies.
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Name of other
entity
Rialto WWRF, Place ID
259149 Yes 3332 7,748 - - Tertiar y 8053 Tertiary 5067 0 3,332 7,748 0 0 8,053 5,067 0
Submittal Table 6-3 Retail: Wastewater Treatment and Outcomes Within UWMP Service Area Water Code Section 10633(b)
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
IPR: Indirect Potable Reuse would have the treatment level of its end use requirement in the Level of Treatment drop-down.
Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.
Water Recycled Outside of
UWMP Service Area
(enter data as applicable)
Effluent Discharge that is
not a Permitted Recycled
Water Use
(enter data as applicable)
Required Discharge for
Instream Flow
(enter data as applicable)
Delivered to Another Entity for Additional
Treatment
(enter data as applicable)
Add additional rows as needed
2025 Outcomes of Treated Wastewater
Check the box if no wastewater is treated or disposed of within the UWMP service area.
Proceed to the next table.
Does This Plant
Treat
Wastewater
Generated
Outside the
UWMP Service
Area?
(OPTIONAL)
Drop down list
Wastewater Treatment
Plant Name and Place ID
Number
Drop down list
Total 2025
Volume of
Water
Treated (AF)
NOTES: 2025 wastewater discharge data greater than influent data; potential meter inaccuracy.
See Part 1, Section 3.5.2 for details regarding required discharges to the Santa Ana River. Note that this total is included in "Effluent Discahrge that is not a Permitted Recycled Water Use" total.
Total
2025 Volume of
Wastewater
Received from
UWMP Service
Area
(As Reported in
Submittal Table
6-2 R) (AF)
Water Recycled Within
UWMP Service Area
(enter data as applicable)
Volume Narrative page number
(OPTIONAL)
Landscape irrigation (exc golf
courses) Non-Potable Recycled Water 0 15 15 15 15 15 15 0 0 0 0 0 0 0
0 15 15 15 15 15 15
0 15 15 15 15 15 15 0Total
Use Type
Drop down list
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop down list
Additional Information
(as needed)
Add additional rows as needed
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.
Potential recycled water use: a description of the feasibility of these uses must be included in the narrative.
Multiple Producers: If you have multiple recycled water producers, submit a separate table for each.
NOTES:
2050 (AF) 2025 (AF) 2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) Subtotal Potable
Subtotal Non-Potable
Check box if recycled water is not used and is not planned for use within the service area of the supplier. The supplier will only complete the column on "Potential Recycled Water Use" and submit an accompanying narrative on the feasibility of that potential recycled water use.
Submittal Table 6-4 Retail: Recycled Water Direct Beneficial Uses Within Service Area Water Code Section 10633 (c),(d),(e)
Potential Recycled Water Use
Name(s) of Facility/ies Producing (Treating) the Recycled Water (OPTIONAL) :
Name of Supplier Operating the Recycled Water Distribution System (OPTIONAL) :
Volume of Supplemental Water Added in 2025 (OPTIONAL) :
Source of 2025 Supplemental Water (OPTIONAL) :
2020 Projection
for 2025 (AF)
2025 Actual
Use (AF)
10 0
10 0
Submittal Table 6-5 Retail: 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual
Water Code Section 10633(e)
Check the box if recycled water was not used in 2025 nor previously projected for use in 2020.
Proceed to the next table.
Add additional rows as needed
Landscape irrigation (exc golf courses)
NOTES:
Total
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure reported in Submittal Table 2-3 Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.
Use Type
Drop Down list
Name of Action Description
Expected Increase in
Recycled Water Use
(AF)
0 0
Total (AF)
DWR NOTES:
Units of measure (AF, CCF, MG) MUST remain consistent with units reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
The unit conversion to Acre Feet addresses the Water Code's requirement that this value be provided in acre- feet. NOTES:
Submittal Table 6-6 Retail: Methods to Encourage Fu ture Recycled Water Use Water Code Section 10633(f)
Check the box if the Supplier does not plan to expand recycled water use in the future. Supplier will not complete the table below but will provide narrative explanation.
Provide page location of narrative in the UWMP
Add additional rows as needed
Unit Conversion to AF
Planned
Implementation Year
Drop Down
List
(yes/no)
If Yes, Supplier Name
Planned for Use in
Year Type
Drop Down List
NOTES:
Submittal Table 6-7 Retail: Expected Future Water S upply Projects or Programs Water Code Section 10631(f)
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure reported in Submittal Table 2-3.
Check the box if some or all of the supplier's future water supply projects or programs are not compatible with this table and are described in a narrative format.
Check the box if there are no expected future water supply projects or programs that provide a quantifiable increase to the agency's water supply.
Proceed to the next table.
Planned
Implementation
Year
Add additional rows as needed
Joint Project with other suppliers? Expected
Increase in
Water Supply
to Supplier
(This may be a
range) (AF)
Provide page location of narrative in the UWMP
Name of Future Projects
or Programs
Additional Description
(as needed)
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
Water Supply
Drop down list
May use each category
multiple times. These are the
only water supply categories
that will be recognized by the
WUEdata online submittal tool
Potable or Non-
Potable
(after treatment if
treated)
(OPTIONAL)
Drop Down list
Actual Volume
(AF)
Total
Entitlement
(OPTIONAL)
See 'DWR
Notes' below
(AF)
Groundwater (not
desalinated) Rialto-Colton Potable 3,548 See Note
Groundwater (not
desalinated) Riverside North Potable 1,458 See Note
Groundwater (not
desalinated) Bunker Hill (part of SBB) Potable 2,311 See Note Groundwater (not
desalinated) Bunker Hill via Baseline Feeder Potable 882 See Note Groundwater (not
desalinated) Lytle (part of SBB) Potable 1,563 See Note Surface water (not
desalinated) Lytle Creek (part of SBB) Potable 1,101
10,863 0
0 0
10,863 0
Submittal Table 6-8 Retail: Water Supplies — Actual
Water Code Section 10631(b)
2025
NOTES: See Part 1 Chapter 3 for discussion of safe yield of regional groundwater basins.
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-
3. This table identifies the unit of measure selected in Submittal Table 2-3.
Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.
Add additional rows as needed
Total
Subtotal Potable
Subtotal Non-Potable
Additional Description
(as needed)
Water Supply
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Groundwater (not
desalinated)
Bunker Hill
(part of SBB) Potable 2,017 2,152 2,287 822 957
Groundwater (not
desalinated)
Bunker Hill
via Baseline
Feeder
Potable 2,500 2,500 2,500 2,500 2,500
Groundwater (not Lytle (part of Potable 1,400 1,400 1,400 1,400 1,400 Groundwater (not Rialto-Colton Potable 1,343 1,343 1,343 2,943 2,943 Groundwater (not Riverside Potable 1,200 1,200 1,200 1,200 1,200 Supply from Storage Lytle Creek Potable 1,000 1,000 1,000 1,000 1,000 Recycled Water Rialto WWTP Non-Potable 15 15 15 15 15
9,460 0 9,595 0 9,730 0 9,865 0 10,000 0
15 0 15 0 15 0 15 0 15 0
9,475 0 9,610 0 9,745 0 9,880 0 10,015 0
Submittal Table 6-9 Retail: Water Supplies — Projected
Water Code Section 10631 (b)
Projected Water Supply (Report to the Extent Practicable) Drop down list
May use each category multiple
times. These are the only water
supply categories that will be
recognized by the WUEdata online
submittal tool
Additional
Detail on
Water Supply
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
2050 (opt)
Add additional rows as needed
Total
NOTES:
2030 2035 2040 2045
Subtotal Non-Potable
Subtotal Potable
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.
Water Delivery Product
drop down list
(If delivering more than one type of
product recommend using Table O-
1C)
Retail Potable
Deliveries
Start Date of Reporting Period 1/1/2025
End Date of Reporting Period 12/31/2025
Is upstream embedded energy in the
values reported? No
Units of Measure for Water AF Total Utility
See DWR NOTES Hydropower Net Utility
10,863 10,863
6,689,069 6,689,069
1,890 - 1,890 Quantity of Self-Generated Renewable Energy
0 kWh
Data Quality (Estimate, Metered Data, Combination of Estimates and Metered Data) Metered Data
Data Quality Narrative:
Narrative:
Volume of Water Entering Process
Energy Consumed (kWh)
Energy Intensity (kWh/vol. converted to MG)
Optional Submittal Table O-1B: Recommended Energy Reporting - SINGLE DELIVERY
PRODUCT - TOTAL UTILITY APPROACH
Data based on Southern California Edison monthly records.
Only for Water Delivery Products Under the Urban
Water Supplier's Operational Control
Sum of All Water
Management
Processes
Non-Consequential Hydropower
DWR NOTES:
Total Utility:The volume of water entered in the “Total Utility” column should equal the volume of water entering the distribution system (excluding recycled water); in most cases, this is the total volume calculated in UWMP Table 4-1: 2025 Actual Total Uses for Potable and Non-Potable Water. Note if recycled water is included in your Submittal Table 4-1, you must exclude it from your volume in this table.
NOTES:
% of Average Supply
Average Year 2025 100%
Single-Dry Year 2024 105%
Consecutive Dry Years 1st Year 2024 105%
Consecutive Dry Years 2nd Year 2024 105%
Consecutive Dry Years 3rd Year 2024 105%
Consecutive Dry Years 4th Year 2024 105%
Consecutive Dry Years 5th Year 2024 105%
Year Type
Base Year
If not using a calendar
year, type in the last
year of the fiscal,
water year, or range
of years, for example,
water year 2024-
2025, use 2025
Optional Submittal Table 7-1 Retail: Basis of Water Year Data (Reliability Assessment) Available Supplies if
Year Type Repeats
Check the box if quantification of available
supplies is not compatible with this table and
is provided elsewhere in the UWMP.
Location: [insert location from UWMP]
Volume Available (AF)
Quantification of available supplies is provided in
this table as either volume only, percent only, or
both.
NOTES:
DWR NOTES: Supplier may use multiple versions of Submittal Table 7-1 R if different water sources have different base years and the supplier chooses to report the base years for each water source separately. If a Supplier uses multiple versions of Submittal Table 7-1 R, in the "Note" section of each submittal table, state that multiple versions of Submittal Table 7-1 R are being used and identify the particular water source that is being reported in each submittal table.
Units of measure (AF, CCF, MG ) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
This table reports the units of measure reported in Submittal Table 2-3. 2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals
(autofill from Submittal Table 6-
9 R)
9,475 9,610 9,745 9,880 10,015
Use totals
(autofill from Submittal Table 4-
2 R)
9,475 9,610 9,745 9,880 10,015
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation
benefit
WSCP - use reduction savings
benefit
Revised Surplus/(shortfall)
OPTIONAL Planned WSCP Actions
Submittal Table 7-2 Retail: Normal Year Supply and Use Comparison Water Code Section 10635 (a)
NOTES:
DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
Supply totals 9,933 10,074 10,216 10,358 10,500
Use totals 9,933 10,074 10,216 10,358 10,500
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised Surplus/(shortfall)
2050 (AF)
DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
NOTES
Submittal Table 7-3 Retail: Single Dry Year Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF)
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals 9,933 10,074 10,216 10,358 10,500
Use totals 9,933 10,074 10,216 10,358 10,500
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 9,961 10,103 10,244 10,387 10,500
Use totals 9,961 10,103 10,244 10,387 10,500
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 9,990 10,131 10,273 10,415 10,500
Use totals 9,990 10,131 10,273 10,415 10,500
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 10,018 10,159 10,301 10,443 10,500
Use totals 10,018 10,159 10,301 10,443 10,500
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 10,046 10,188 10,330 10,472 10,500
Use totals 10,046 10,188 10,330 10,472 10,500
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Submittal Table 7-4 Retail: Multiple Dry Years Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
Third year
Fifth year
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
OPTIONAL Planned WSCP Actions
OPTIONAL Planned WSCP Actions
OPTIONAL Planned WSCP Actions
Fourth year
NOTES:
First year
OPTIONAL WSCP Actions Second year
2026 Total
Total Water Use (AF) 9,159
Total Supplies (AF) 9,159
Surplus/Shortfall w/o WSCP Action 0
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Revised Surplus/(shortfall)
2027 Total
Total Water Use (AF) 9,347
Total Supplies (AF) 9,347
Surplus/Shortfall w/o WSCP Action 0
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Revised Surplus/(shortfall)
2028 Total
Total Water Use (AF) 9,538
Total Supplies (AF) 9,538
Surplus/Shortfall w/o WSCP Action 0
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Revised Surplus/(shortfall)
2029 Total
Total Water Use (AF) 9,734
Total Supplies (AF) 9,734
Surplus/Shortfall w/o WSCP Action 0
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Revised Surplus/(shortfall)
2030 Total
Total Water Use (AF) 9,933
Total Supplies (AF) 9,933
Surplus/Shortfall w/o WSCP Action 0
Submittal Table 7-5 Retail: Five-Year Drought Risk Assessment Water Code Section 10635(b)(3)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Revised Surplus/(shortfall)
NOTES:
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation) Standard
Shortage
Levels
Percent Shortage
Range
Suppliers
Shortage
Levels
Percent
Shortage Range
1 Up to 10% 1 10
2 Up to 20% 2 20
3 Up to 30% 3 25
4 Up to 40% 4 30-50+
5 Up to 50% 4 30-50+
6 >50% 4 30-50+
Submittal Table 8-1: Cross-reference for Standard v s
Supplier Shortage Levels
Water Code Section 10632(a)(3)(B)
Check the box if the Supplier uses the Standard
six levels of water shortage.
Proceed to the next table.
NOTES:
Volume or
Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range) (AF)
4 Other Purchases Percentage 0-100%
Mutual aid agreements with the City of San
Bernardino, Fontana Water, RHWC, and
WVWD.
Submittal Table 8-2 Retail: Supply Augmentation and Other Actions Water Code Section 10632(a)(4)(A),(C) and (E)
Add additional rows as needed
NOTES:
Is the Supplier completing this table using the standard six levels? (yes/no) How much is this going to reduce the
shortage gap?
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
Shortage
Level
Supply Augmentation Methods and
Other Actions by Water Supplier
Drop down list
These are the only categories that will be
accepted by the WUEdata online submittal tool
Additional Explanation or Reference
(OPTIONAL)
Volume or Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range) (AF)
All Expand Public Information Campaign Percentage 0-20% No 1 CII - Restaurants may only serve water upon request Percentage 0-1% All restaurants and food establishments are requested not to serve water to their customers unless specifically requested by the customer. No
1 Landscape - Limit landscape irrigation to specific times Percentage 0-5% Watering with automatic sprinklers should be done between 8 pm and 6 am and that hand watering and nonautomatic sprinklers should be done between 6 pm and 8 am. Drip irrigation is exempt from this recommendation. Water being used during repair or maintenance of watering systems is exempt from this section.
No
1 Landscape - Other landscape restriction or prohibition Percentage 0-5% The use of sprinklers for any type of irrigation during high winds, which divert a significant amount Yes
1 Landscape - Other landscape restriction or prohibition Percentage 0-5% The irrigation with potable water of landscape outside of newly constructed homes and buildings must be consistent with regulations or other requirements established by the California Buildings Standards Commission, as those regulations may be modified from time to time.
Yes
1 Landscape - Prohibit certain types of landscape irrigation Percentage 0-5% The irrigation of potable water of ornamental turf on public street medians is prohibited. The term "median" shall mean the strip of land between street lanes. Yes 1 Landscape - Restrict or prohibit runoff from landscape irrigation Percentage 0-5% Water used which results in flooding or run-off should be prevented and controlled. Use of water for any purpose which results in flooding or run-off in gutters, driveways or streets is prohibited.
Yes
1 Other - Customers must repair leaks, breaks, and malfunctions in a timely manner Percentage 0-1% No person shall knowingly permit water to leak from any facility, improvement or plumbing fixture on his/her/its premises; any such leak shall be repaired in a timely manner. Yes 1 Other - Prohibit use of potable water for washing hard surfaces Percentage 0-1% There shall be no application of water to sidewalks, walkways, driveways, parking areas, patios, porches, verandas, tennis courts or other paved, concrete or other hard surface areas, except that flammable or other similarly dangerous or unhealthy substances may be washed from said areas by direct hose flushing for the benefit of public health or safety.
Yes
1 Other - Require automatic shut of hoses Percentage 0-1% Washing of automobiles, trucks, trailers, boats and other mobile equipment is prohibited unless done with a bucket or hand held device equipped with an automatic shut off trigger nozzle or device attached to it that causes it to cease dispensing water immediately when not in use. This section does not apply to the washing of the above-listed vehicles or mobile equipment when conducted at a commercial car or truck wash utilizing recirculating systems.
Such washings are exempted from these regulations when the health, safety, and welfare of the public is contingent upon frequent vehicle cleaning such as garbage trucks and vehicles used to transport food and perishables.
Yes
Is the Supplier completing this table using the standard six levels? (yes/no) Submittal Table 8-3 Retail: Demand Reduction Actions
Water Code Section 10632(a)(4)(B),(D), and (E)
Add additional rows as needed
How much is this going to reduce the shortage
gap?
Shortage
Level
Demand Reduction Actions
Drop down list
These are the only categories that will be accepted by the WUEdata online submittal tool. Select those that apply.
Additional Explanation or Reference
(OPTIONAL)
Penalty, Charge, or
Other
Enforcement?
For Retail Suppliers Only
Drop Down List
1 Water Features - Restrict water use for decorative water features, such as fountains Percentage 0-1% No water shall be used to clean, fill, operate or maintain levels in decorative fountains unless such water is part of a recirculating system. Yes
2 CII - Lodging establishment must offer opt out of linen service Percentage 0-1% Operators of hotels and motels must provide guests with the option of choosing not to have towels and linens laundered daily and prominently display notice of this option. Yes 2 CII - Restaurants may only serve water upon request Percentage 0-1% All restaurants are prohibited from serving water to their customers except when specifically requested by the customer. Yes
2 Landscape - Limit landscape irrigation to specific days Percentage 0-5% All landscape irrigation shall be limited to no more than four (4) days per week for no more than ten (10) minutes per station per day. This provision does not apply to any landscape that has water-efficient devices that are operated properly. Water-efficient devices are drip irrigation systems and operational weather-based irrigation controllers. The term "week" is defined as Sunday through Saturday.
Yes
2 Landscape - Other landscape restriction or prohibition Percentage 0-5% The city shall screen all new applications for water service installations and shall limit water use to that essential for construction and testing of landscape plumbing. Limited landscaping for new development shall be allowed as approved by the city.
Yes
2 Landscape - Other landscape restriction or prohibition Percentage 0-5% Irrigating turf or ornamental landscapes during or within forty-eight (48) hours following measurable precipitation in excess of one-quarter inch is prohibited Yes 2 Other - Customers must repair leaks, breaks, and malfunctions in a timely manner Percentage 0-1%
All customers shall repair all leaks within seventy-two (72) hours of notification by the city, actual notice by the customer, or other notice of such leak, unless other arrangements are made with the city administrator or his/her designee.
Yes
3A Landscape - Limit landscape irrigation to specific days Percentage 0-5% All landscape irrigation with potable water shall be limited to no more than three days per week for no more than ten minutes per station per day. This provision does not apply to any landscape that has water-efficient devices that are operated properly. Water-efficient devices are drip irrigation systems and operational weather-based irrigation controllers.
Week is defined as Sunday through Saturday.
Yes
3A Other water feature or swimming pool restriction Percentage 0-1% Ornamental ponds, fountains, water displays, and artificial lakes shall not be filled or refilled. Yes 3A Other water feature or swimming pool restriction Percentage 0-1% Swimming pools, hot tubs, and spas shall not be filled or refilled. Yes 3A Landscape - Other landscape restriction or prohibition Percentage 0-5% New water service shall be installed but water shall be used before occupancy for essential construction only and for testing of landscape irrigation systems. The installation of new landscaping for all new development/projects must be approved by the city.
Yes
3B CII - Other CII restriction or prohibition Percentage 0-1% Water used for compaction, dust control, and other types of construction shall be by permit only and will be limited to conditions of the permit or may be prohibited as determined by the city administrator, or his/her designee.
Yes
3C Other - Prohibit vehicle washing except at facilities using recycled or recirculating water Percentage 0-1%
Washing of automobiles, trucks, trailers, boats, airplanes and other types of mobile equipment is prohibited. Washing of the above-listed vehicles or mobile equipment shall be done only at a commercial car wash where recirculating or recycled water is being utilized.
Such washings are exempt from these regulations when the health, safety, and welfare of the public is contingent upon frequent vehicle cleaning such as garbage trucks and vehicles used to transport food and perishables.
Yes
4 CII - Other CII restriction or prohibition Percentage 0-1% No water shall be used for construction purposes unless they are using reclaimed water. All fire hydrant and construction meters shall be locked off or removed. Yes 4 Landscape - Limit landscape irrigation to specific days Percentage 0-5% Commercial nurseries shall water only between the hours of 11 p.m. and 6 a.m. and only with hand-held devices or with drip irrigation. Yes
4 Landscape - Prohibit all landscape irrigation Percentage 0-5% There shall be no watering of any lawn or landscaped area, except by use of reclaimed water. Yes 4 Other Percentage 0-1% The use of water shall be limited to essential household, commercial, manufacturing or processing uses only, except where other uses may be allowed by permit. Yes NOTES:
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. 2020 IRWUMP Part 4 City of Rialto Appendix E
E-6: Water Shortage Contingency Plan
This appendix includes the current Water Shortage Contingency Plan (WSCP) at the time of adoption of the 2025 RUWMP, however the WSCP may be amended separately in the future.
Contact The City of Rialto to obtain the most current version of the WSCP.
Water Shortage
Contingency Plan
DRAFT
City of Rialto
APRIL 2026 CITY OF RIALTO
CITY OF RIALTO
Water Shortage
Contingency Plan DRAFT
APRIL 2026
Prepared by Water Systems Consulting, Inc and Blua
Consulting, LLC
ACKNOWLEDGEMENTS
The Water Shortage Contingency Plan DRAFT was prepared by Water Systems Consulting, Inc. The primary authors are listed below.
Laine Carlson, PE
Ariana Lopez
Aaron Morland, PE
Patricia Parks, PE
Madeline Blua
Water Systems Consulting, Inc. would like to acknowledge the significant contributions of the City of Rialto. The primary contributors are listed below.
Toyasha Sebbag
Jason Pivovaroff, Dopudja & Wells
Rialto Water Services, as Operated by Veolia North America
Table of Contents
Water Shortage Contingency Plan DRAFT | i
TABLE OF CONTENTS
City of Rialto ................................ ................................ ................................ .............................. 1
1.0 Water Service Reliability Analysis ................................ ................................ .................... 3
2.0 Annual Water Supply and Demand Assessment Procedures ................................ .......... 3
3.0 Water Shortage Stages ................................ ................................ ................................ ... 5
4.0 Shortage Response Actions ................................ ................................ ............................ 8
4.1 Supply Augmentation ................................ ................................ ................................ ... 8
4.2 Demand Reduction ................................ ................................ ................................ ...... 8
4.3 Operational Changes and Additional Mandatory Restrictions ................................ ......14
4.4 Emergency Response Plan ................................ ................................ .........................14
4.5 Seismic Risk Assessment and Mitigation Plan ................................ ............................14
4.6 Shortage Response Action Effectiveness ................................ ................................ ...15
5.0 Communication Protocols ................................ ................................ ............................... 15
6.0 Compliance and Enforcement ................................ ................................ ........................15
7.0 Legal Authority ................................ ................................ ................................ ...............16
7.1 Declaration of Water Shortage ................................ ................................ ....................16
7.2 Proclamation of Local Emergency ................................ ................................ ...............16
8.0 Financial Consequences of WSCP Implementation ................................ ........................16
9.0 Monitoring and Reporting ................................ ................................ ............................... 17
10.0 WSCP Refinement Procedures ................................ ................................ ...................17
11.0 Plan Adoption, Submittal, and Availability ................................ ................................ ...17 References ................................ ................................ ................................ ............................... 19 Attachment 1 ................................ ................................ ................................ .............................20 Attachment 2 ................................ ................................ ................................ .............................21
List of Figures
Water Shortage Contingency Plan DRAFT | ii
LIST OF FIGURES
Figure 1: Regional and Retail Agency Annual Assessment Process and Timeline ..................... 5 Figure 2: Crosswalk to DWR Six Standard Stages ................................ ................................ ..... 7
List of Tables
Water Shortage Contingency Plan DRAFT | iii
LIST OF TABLES
Table 1: Annual Assessment Procedure ................................ ................................ .................... 4 Table 2: DWR 8-1 Water Shortage Contingency Plan Stages ................................ .................... 7 Table 3: DWR 8-2R Supply Augmentation & Other Actions................................ ........................ 8 Table 4: DWR 8-3R Demand Reduction Actions ................................ ................................ ........ 9
Acronyms & Abbreviations
Water Shortage Contingency Plan DRAFT | iv
ACRONYMS & ABBREVIATIONS
AWIA American Water Infrastructure Association
BTAC Basin Technical Advisory Committee
CWC California Water Code
CII Commercial, Industrial, and Institutional
DWR California Department of Water Resources
DRA Drought Risk Assessment
ERP Emergency Response Plan
RHWC Riverside Highland Water Company
RRA Risk and Resilience Assessment
RWS Rialto Water Services
RUWMP Regional Urban Water Management Plan
SBV San Bernardino Valley Municipal Water District
SWP State Water Project
UW MP Urban Water Management Plan
WSCP Water Shortage Contingency Plan
WVWD West Valley Water District
Water Shortage Contingency Plan 1
City of Rialto
This Water Shortage Contingency Plan (WSCP) is a strategic plan that the City of Rialto (Rialto or the City ) uses to prepare for and respond to water shortages .
A water shortage occurs when the water supply available is insufficient to meet the normally expected customer water use at a given point in time. A shortage may occur due to a number of reasons. This includes water supply quality changes, climate change, drought, regional power outages, and catastrophic events (e.g., earthquakes). Additionally, the State may declare a statewide drought emergency and mandate that water suppliers reduce demands. The WSCP serves as the operating manual that Rialto will use to prevent catastrophic service disruptions through proactive, rather than reactive, mitigation of water shortages.
This WSCP provides a process for an annual water supply and demand assessment and structured steps designed to respond to actual conditions. This level of detailed planning and preparation provides accountability and predictability to help Rialto maintain reliable supplies and reduce the impact of any supply shortages and/or interruptions.
This WSCP was prepared in conjunction with Rialto’s 2025 UWMP, which is included in the 2025 Regional Urban Water Management Plan (2025 RUWMP) and is a standalone document that can be modified as needed. This document is compliant with the California Water Code (CWC) Section 10632 and incorporates guidance from the State of California Department of Water Resources (DWR) UWMP Guidebook.
IN THIS S ECTIO N
• Water Service Reliability
• Annual Water Supply and
Demand Assessment
• Supply Shortage Stages and
Response Actions
City of Rialto
Water Shortage Contingency Plan DRAFT 2
The WSCP describes the following:
1. Water Service Reliability Analysis: Summarizes Rialto’s water supply analysis and reliability and identifies any key issues that may trigger a shortage condition.
2. Annual Water Supply and Demand Assessment Procedures: Describes the key data inputs, evaluation criteria, and methodology for assessing the system’s reliability for the coming year and the steps to formally declare any water shortage stages and response actions.
3. Water Shortage Stages: Establishes water shortage stages to clearly identify and prepare for shortages.
4. Shortage Response Actions: Describes the response actions that may be implemented or considered for each stage to reduce gaps between supply and demand.
5. Communication Protocols: Describes communication protocols under each stage to ensure customers, the public, and government agencies are informed of shortage conditions and requirements.
6. Compliance and Enforcement: Defines compliance and enforcement actions available to administer demand reductions.
7. Legal Authority: Lists the legal documents that grant the City the authority to declare a water shortage and implement and enforce response actions.
8. Financial Consequences of WSCP Implementation: Describes the anticipated financial impact of implementing water shortage stages and identifies mitigation strategies to offset financial burdens.
9. Monitoring and Reporting: Summarizes the monitoring and reporting techniques to evaluate the effectiveness of shortage response actions and overall WSCP implementation. Results are used to determine if shortage response actions should be adjusted.
10. WSCP Refinement Procedures: Describes the factors that may trigger updates to the WSCP and outlines how to complete an update.
11. Plan Adoption, Submittal, and Availability: Describes the process for the WSCP adoption, submittal, and availability after each revision.
City of Rialto
Water Shortage Contingency Plan DRAFT 3
1.0 Water Service Reliability Analysis
As part of the 2025 RUWMP, Rialto completed a water supply reliability analysis for normal, single-dry, and five-year consecutive dry year periods from 2030-2050. A Drought Risk Assessment (DRA) was also performed to analyze supply reliability under five consecutive years of drought from 2026-2030. As described in Chapter 3 of the 2025 RUWMP, the effects of a local drought are not immediately recognized since the region uses the local groundwater basins to simulate a large reservoir for long-term storage. Rialto is able to pump additional groundwater to meet increased demands in dry years and participates in efforts to replenish the basins with imported and local water through regional recharge programs. Additionally, Rialto implements several ongoing water conservation measures. Regional recharge programs and conservation help to optimize and enhance the use of regional water resources.
Based on the 2025 RUWMP analysis, Rialto’s water supply is reliable and not expected to see impactful change under drought conditions.
Even though localized drought conditions should not affect supply, other shortages may occur due to a number of reasons, such as water supply quality changes, regional power outage, State mandates for water use efficiency standards, and catastrophic events (e.g., earthquake).
Therefore, Rialto will use this WSCP as appropriate to address shortages and other supply emergencies.
2.0 Annual Water Supply and Demand
Assessment Procedures
As an urban water supplier, Rialto must prepare and submit an Annual Water Supply and Demand Assessment (Annual Assessment) by July 1 each year pursuant to CWC Section 10632.1. The Annual Assessment is an evaluation of the near-term outlook for supplies and demands to determine whether the potential for a supply shortage exists and whether there is a need to trigger a WSCP shortage stage and response actions in the current calendar year to maintain supply reliability. This process will take place at the same time each year based on known circumstances and information available to Rialto at the time of analysis and can be updated or revised at any time if circumstances change.
Rialto will convene an internal WSCP Team to conduct the Annual Assessment each year.
The WSCP Team may include the following staff:
• Director of Utilities
• Conservation Coordinator
• Rialto Water Services/Veolia Operations Staff
City of Rialto
Water Shortage Contingency Plan DRAFT 4
The Annual Assessment procedure, including key data inputs and evaluation criteria, is summarized in Table 1. The Annual Assessment procedure and timeline, along with how it integrates with the annual assessment that will be conducted on a regional basis in parallel, is shown graphically in Figure 1.
Table 1: Annual Assessment Procedure
TIMING
ASSESSMENT
ACTIVITIES
PROCEDURE, KEY DATA INPUTS, EVALUATION
CRITERIA, AND OTHER CONSIDERATIONS
STAFF
RESPONSIBLE
JAN-
FEB
Estimate
unconstrained
demands for
coming year
Demands will be estimated based on water sales
forecasts from annual budget or prior year demands plus any anticipated changes.
Director of
Utilities
JAN-
FEB
Estimate
available
supplies for the
year,
considering the
following year
will be dry
The Basin Technical Advisory Committee (BTAC) evaluates groundwater in storage each year. The Bunker Hill, Lytle Creek, Rialto-Colton, and Riverside North basins are
sustainably managed to provide storage for use in dry
years. In the unlikely event that local supplies are
reduced, Rialto will coordinate with the BTAC to identify anticipated supplies.
Director of
Utilities
JAN-
FEB
Consider
potential
constraints that
may impact
supply delivery
Identify any known regional or Rialto infrastructure issues that may pertain to near-term water supply reliability, including repairs, construction, and environmental
mitigation measures that may temporarily constrain
capabilities, as well as any new projects that may add to system capacity.
Identify any facilities out of service due to water quality problems, equipment failure, etc. that may impact normal water deliveries.
Identify any potential or emerging impacts to
groundwater quality, such as emerging regulatory
constraints that may limit use of available supplies for potable needs.
Rialto Water
Services
(RWS)/Veolia
FEB Convene
WSCP Team to
conduct Annual
Assessment
Compare supplies and demands and discuss any
constraints that may impact supply delivery. If the
potential for a shortage exists, determine which shortage response level and actions are recommended to
reduce/eliminate the shortage.
Additionally, if the State declares a drought state of
emergency and requires demand reductions, the WSCP
Team will determine which water shortage stage and
response actions are needed to comply with the State
mandate.
WSCP Team
City of Rialto
Water Shortage Contingency Plan DRAFT 5
TIMING
ASSESSMENT
ACTIVITIES
PROCEDURE, KEY DATA INPUTS, EVALUATION
CRITERIA, AND OTHER CONSIDERATIONS
STAFF
RESPONSIBLE
JUNE City Council If the potential for a shortage exists or the State has mandated demand reductions, the results of the Annual
Assessment will be presented to the Water Subcommittee
of the City Council, Utility Commission, and the Rialto City Council, including the recommended shortage stage and
response actions. The City Council may order the
implementation of a shortage stage and will adopt a
resolution declaring the applicable water shortage stage.
City Manager,
Cable
Advisory &
Utilities
Commission,
City Council
ON-
GOING
Implement
WSCP actions,
if needed
Relevant members of Rialto staff will implement shortage response actions associated with the declared water
shortage stage.
WSCP Team
BY
JULY 1
Submit Retail
Annual
Assessment
Send Final Retail Annual Assessment to DWR. WSCP Team
Figure 1: Regional and Retail Agency Annual Assessment Process and Timeline
3.0 Water Shortage Stages
With the exception of a catastrophic failure of infrastructure, Rialto does not foresee imposing a water shortage stage due to a supply shortage. Rialto may impose a water shortage stage to encourage efficient water use and to comply with State drought mandates, such as those that occurred in 2014 and again in 2022 with Governor Newsom’s Executive Order N-7-22 (EO N-7- 22), which required that urban water suppliers implement demand reduction actions listed in the supplier’s state standard shortage stage 2. This section provides information on the water shortage stages and response actions that Rialto may implement.
City of Rialto
Water Shortage Contingency Plan DRAFT 6
Rialto uses four (4) shortage stages to identify and respond to water shortage emergencies. At a minimum, Rialto encourages baseline conservation efforts year-round, regardless of a shortage emergency.
Stage I: Normal Conditions
Normal conditions mean normal supply and distribution capacity is available.
Stage II: Water Alert
Stage 2 means that the City may not be able to meet all water demands of all water customers, or the state of California has adopted regulations requiring the City to implement requirements and actions of a Stage 2 Water Alert as outlined in Section 12.20.022 of Ordinance Number 1560, regardless of the City's local water supply. All customers are required to reduce potable water consumption by a minimum of twenty percent.
Stage III: Water Warning (Includes Sub-Stages A, B, and C) Stage 3 means that the City is not able to meet all water demands of all water customers, or the state of California has adopted regulations requiring the City to implement requirements and actions of a Stage 3 water warning as outlined in Section 12.20.023 of Ordinance Number 1560, regardless of the City's local water supply. All customers are required to reduce potable water use consumption by a minimum of twenty-five percent.
Stage IV: Water Emergency
Stage 4 means that the City is experiencing a major failure of water supply or distribution, or the state of California has adopted regulations requiring the City to implement requirements and actions of a Stage 4 water emergency as outline in Section 12.20.024 of Ordinance Number 1560, regardless of the City's local water supply. All customers are required to reduce potable water consumption by a minimum of thirty percent. The use of water shall be limited to essential household, commercial, manufacturing or processing uses only, except where other uses may be allowed by permit.
The CWC outlines six standard water shortage stages that correspond to a gap in supply compared to normal year availability. The six standard water shortage stages correspond to progressively increasing estimated shortage conditions (up to 10-, 20-, 30-, 40-, 50-percent, and greater than 50-percent shortage compared to the normal reliability condition) and align with the response actions that a water supplier would implement to meet the severity of the impending shortages.
The CWC allows suppliers with an existing WSCP that uses different water shortage stages to comply with the six standard stages by developing and including a cross-reference relating its existing shortage categories to the six standard water shortage stages. Rialto is maintaining the current four shortage stages for this WSCP. A crosswalk defines how Rialto’s current water shortage stages will align with the DWR’s standardized six stages of shortage. A visual representation of this alignment is shown in Figure 2 and Table 2 City of Rialto
Water Shortage Contingency Plan DRAFT 7
Figure 2: Crosswalk to DWR Six Standard Stages
Table 2: DWR 8-1 Water Shortage Contingency Plan Stages DWR
STANDARD
SHORTAGE
LEVEL
DWR PERCENT
SHORTAGE
RANGE RIALTO’S SHORTAGE LEVEL
RIALTO PERCENT
SHORTAGE RANGE
1 Up to 10% Normal Conditions (Rialto Stage 1) Up to 10% 2 Up to 20% Water Alert (Rialto Stage 2) Up to 20%
3 Up to 30% Water Warning (Rialto Stages 3A, 3B, and
3C)
Up to 25%
4 Up to 40% Water Emergency (Rialto Stage 4) 30-50% and Above 5 Up to 50% Water Emergency (Rialto Stage 4) 30-50% and Above 6 >50% Water Emergency (Rialto Stage 4) 30-50% and Above Note: One stage in the Water Shortage Contingency Plan must address a water shortage of 50%.
City of Rialto
Water Shortage Contingency Plan DRAFT 8
4.0 Shortage Response Actions
This section was completed pursuant to CWC Section 10632(a)(4) and 10632.5(a) and describes the response actions that must be implemented or considered for each stage to minimize social and economic impacts to the community.
In accordance with CWC 10632(b), Rialto analyzes and defines water features that are artificially supplied with water, including ponds, lakes, waterfalls, and fountains, separately from swimming pools and spas.
4.1 Supply Augmentation
Table 3 identifies the supply augmentation actions Rialto can take in the event of a water shortage condition. Rialto currently maintains mutual aid agreements with the City of San Bernardino, Fontana Water, Riverside Highland Water Company (RHWC), and West Valley Water District (WVWD). During water shortage emergencies, Rialto may be able to obtain supplemental water supply though these connections, if available.
Table 3: DWR 8-2R Supply Augmentation & Other Actions
SHORTAGE
STAGE
SUPPLY
AUGMENTATION
METHODS AND OTHER
ACTIONS BY WATER
SUPPLIER
HOW MUCH IS THIS
GOING TO REDUCE
THE SHORTAGE GAP?
ADDITIONAL EXPLANATION OR
REFERENCE
4 Other purchases 0-100% Mutual aid agreements with the City of San Bernardino, Fontana
Water, RHWC, and WVWD.
4.2 Demand Reduction
In addition to prohibitions on end uses, Rialto participates in statewide efforts to conserve water and protect the ecological habitat of the region. The reduction goal is to balance supply and demand. Table 4 summarizes these efforts and end use prohibitions.
City of Rialto
Water Shortage Contingency Plan DRAFT 9
Table 4: DWR 8-3R Demand Reduction Actions
SHORTAGE
STAGE
DEMAND
REDUCTION
ACTIONS
HOW MUCH IS THIS GOING
TO REDUCE THE
SHORTAGE GAP? ADDITIONAL EXPLANATION OR REFERENCE
PENALTY,
CHARGE, OR
OTHER
ENFORCEMENT
All Expand Public
Information
Campaign
0-20% No
1 CII - Restaurants
may only serve
water upon
request
0-1% All restaurants and food establishments are requested not to serve water to their customers unless specifically requested by the customer.
No
1 Landscape -
Limit landscape
irrigation to
specific times
0-5% Watering with automatic sprinklers should be done between 8 pm and 6 am and hand watering and nonautomatic sprinklers should be done between 6 pm and 8 am. Drip irrigation is exempt from this recommendation. Water being used during repair or
maintenance of watering systems is exempt from this section.
No
1 Landscape -
Other
landscape
restriction or
prohibition
0-5% The use of sprinklers for any type of irrigation during high winds, which divert a significant amount of water away from the intended landscaping, is prohibited.
Yes
1 Landscape -
Other
landscape
restriction or
prohibition
0-5% The irrigation with potable water of landscape outside of newly constructed homes and buildings must be consistent with regulations or other requirements established by the California Buildings Standards Commission, as those regulations may be modified from time to time.
Yes
1 Landscape -
Prohibit certain
types of
landscape
irrigation
0-5% The irrigation of potable water of ornamental turf on public street medians is prohibited. The term "median" shall mean the strip of land between street lanes.
Yes
City of Rialto
Water Shortage Contingency Plan DRAFT 10
SHORTAGE
STAGE
DEMAND
REDUCTION
ACTIONS
HOW MUCH IS THIS GOING
TO REDUCE THE
SHORTAGE GAP? ADDITIONAL EXPLANATION OR REFERENCE
PENALTY,
CHARGE, OR
OTHER
ENFORCEMENT
1 Landscape -
Restrict or
prohibit runoff
from landscape
irrigation
0-5% Water used which results in flooding or run-off should be prevented and controlled. Use of water for any purpose which results in flooding or run-off in gutters, driveways or streets is prohibited.
Yes
1 Other -
Customers must
repair leaks,
breaks, and
malfunctions in
a timely manner
0-1% No person shall knowingly permit water to leak from any facility, improvement, or plumbing fixture on his/her/its premises; any such leak shall be repaired in a timely manner.
Yes
1 Other - Prohibit
use of potable
water for
washing hard
surfaces
0-1% There shall be no application of water to sidewalks, walkways, driveways, parking areas, patios, porches, verandas, tennis courts or other paved, concrete or other hard surface areas, except that flammable or other similarly dangerous or unhealthy substances may be washed from said areas by direct hose flushing for the benefit of public health or safety.
Yes
1 Other - Require
automatic shut-
off hoses
0-1% Washing of automobiles, trucks, trailers, boats, and other mobile equipment is prohibited unless done with a bucket or handheld device equipped with an automatic shut off trigger nozzle or device attached to it that causes it to cease dispensing water immediately when not in use. This section does not apply to the washing of the above-listed vehicles or mobile equipment when conducted at a commercial car or truck wash utilizing recirculating systems. Such washings are exempted from these regulations when the health, safety, and welfare of the public is contingent upon frequent vehicle cleaning such as garbage trucks and vehicles used to transport food and perishables.
Yes
City of Rialto
Water Shortage Contingency Plan DRAFT 11
SHORTAGE
STAGE
DEMAND
REDUCTION
ACTIONS
HOW MUCH IS THIS GOING
TO REDUCE THE
SHORTAGE GAP? ADDITIONAL EXPLANATION OR REFERENCE
PENALTY,
CHARGE, OR
OTHER
ENFORCEMENT
1 Water Features
- Restrict water
use for
decorative
water features,
such as
fountains
0-1% No water shall be used to clean, fill, operate, or maintain levels in decorative fountains unless such water is part of a recirculating system.
Yes
2 CII - Lodging
establishment
must offer opt
out of linen
service
0-1% Operators of hotels and motels must provide guests with the option of choosing not to have towels and linens laundered daily and prominently display notice of this option.
Yes
2 CII - Restaurants
may only serve
water upon
request
0-1% All restaurants are prohibited from serving water to their customers except when specifically requested by the customer.
Yes
2 Landscape -
Limit landscape
irrigation to
specific days
0-5% All landscape irrigation shall be limited to no more than four (4) days per week for no more than ten (10) minutes per station per day. This provision does not apply to any landscape that has water-efficient devices that are operated properly. Water- efficient devices are drip irrigation systems and operational weather-based irrigation controllers. The term "week" is defined as Sunday through Saturday.
Yes
2 Landscape -
Other
landscape
restriction or
prohibition
0-5% The City shall screen all new applications for water service installations and shall limit water use to that essential for construction and testing of landscape plumbing. Limited landscaping for new development shall be allowed as approved by the City.
Yes
City of Rialto
Water Shortage Contingency Plan DRAFT 12
SHORTAGE
STAGE
DEMAND
REDUCTION
ACTIONS
HOW MUCH IS THIS GOING
TO REDUCE THE
SHORTAGE GAP? ADDITIONAL EXPLANATION OR REFERENCE
PENALTY,
CHARGE, OR
OTHER
ENFORCEMENT
2 Landscape -
Other
landscape
restriction or
prohibition
0-5% Irrigating turf or ornamental landscapes during or within forty- eight (48) hours following measurable precipitation in excess of one-quarter inch is prohibited
Yes
2 Other -
Customers must
repair leaks,
breaks, and
malfunctions in
a timely manner
0-1% All customers shall repair all leaks within seventy-two (72) hours of notification by the City, actual notice by the customer, or other notice of such leak, unless other arrangements are made with the City administrator or his/her designee.
Yes
3A Landscape -
Limit landscape
irrigation to
specific days
0-5% All landscape irrigation with potable water shall be limited to no more than three days per week for no more than ten minutes per station per day. This provision does not apply to any landscape that has water-efficient devices that are operated properly.
Water-efficient devices are drip irrigation systems and operational weather-based irrigation controllers. Week is defined as Sunday through Saturday.
Yes
3A Other water
feature or
swimming pool
restriction
0-1% Ornamental ponds, fountains, water displays, and artificial lakes shall not be filled or refilled.
Yes
3A Landscape -
Other
landscape
restriction or
prohibition
0-5% New water service shall be installed but water shall be used before occupancy for essential construction only and for testing of landscape irrigation systems. The installation of new landscaping for all new development/projects must be approved by the City.
Yes
3B CII - Other CII
restriction or
prohibition
0-1% Water used for compaction, dust control, and other types of construction shall be by permit only and will be limited to conditions of the permit or may be prohibited as determined by the City administrator, or his/her designee.
Yes
City of Rialto
Water Shortage Contingency Plan DRAFT 13
SHORTAGE
STAGE
DEMAND
REDUCTION
ACTIONS
HOW MUCH IS THIS GOING
TO REDUCE THE
SHORTAGE GAP? ADDITIONAL EXPLANATION OR REFERENCE
PENALTY,
CHARGE, OR
OTHER
ENFORCEMENT
3C Other - Prohibit
vehicle washing
except at
facilities using
recycled or
recirculating
water
0-1% Washing of automobiles, trucks, trailers, boats, airplanes, and other types of mobile equipment is prohibited. Washing of the above-listed vehicles or mobile equipment shall be done only at a commercial car wash where recirculating or recycled water is being utilized. Such washings are exempt from these regulations when the health, safety, and welfare of the public is contingent upon frequent vehicle cleaning such as garbage trucks and vehicles used to transport food and perishables.
Yes
4 CII - Other CII
restriction or
prohibition
0-1% No water shall be used for construction purposes unless they are using reclaimed water. All fire hydrants and construction meters shall be locked off or removed.
Yes
4 Landscape -
Limit landscape
irrigation to
specific days
0-5% Commercial nurseries shall water only between the hours of 11 p.m. and 6 a.m. and only with handheld devices or with drip irrigation.
Yes
4 Landscape -
Prohibit all
landscape
irrigation
0-5% There shall be no watering of any lawn or landscaped area, except by use of reclaimed water.
Yes
4 Other 0-1% The use of water shall be limited to essential household, commercial, manufacturing, or processing uses only, except where other uses may be allowed by permit.
Yes
City of Rialto
Water Shortage Contingency Plan DRAFT 14
4.3 Operational Changes and Additional Mandatory
Restrictions
During shortage conditions, operations may be affected by supply augmentation or demand reduction responses. Rialto will consider its operational procedures when it completes its Annual Assessment. Any additional mandatory restrictions implemented in response to the declaration of a shortage response stage, beyond the actions listed in Table 3 and Table 4 are listed in Rialto’s Ordinance No. 1560 provided in Attachment 1.
4.4 Emergency Response Plan
In 2025, Rialto completed a Risk and Resilience Assessment (RRA) and updated the Emergency Response Plan (ERP) in 2026 in accordance with America’s Water Infrastructure Act (AWIA) of 2018. The purpose of the RRA and ERP is to meet the AWIA compliance requirements and plan for long-term resilience of Rialto’s infrastructure. The RRA is an assessment of Rialto’s water system to identify critical assets and processes that may be vulnerable to human and natural hazards, and to identify measures that can be taken to reduce risk and enhance resilience from service disruption for the benefit of customers. The RRA identifies and characterizes both infrastructure-specific and system-wide vulnerabilities and threats and quantifies the consequences of disruption. The RRA also identifies various options (and constraints) in addressing and mitigating risk. The RRA, in conjunction with the ERP, charts a course for water system resilience. The RRA also provided various recommendations to increase reliability of Rialto’s system. Since critical pieces of infrastructure and specific vulnerabilities are detailed in the RRA and ERP, the contents of the document are confidential and for use by Rialto’s staff only. However, Rialto can confirm that these plans meet the requirements set forth by AWIA and evaluate seismic risks and mitigation actions to Rialto’s infrastructure.
In the event of a water shortage emergency resulting from equipment failure, power outage, or other catastrophe, Rialto is prepared to purchase emergency water supplies from nearby agencies while repairs or other remedial actions are underway. Rialto may also implement its four-stage plan for conservation, as described above, with either voluntary or mandatory reductions depending on the severity of the shortage. For severe disasters (Stage 4), mandatory water use reductions are specified.
4.5 Seismic Risk Assessment and Mitigation Plan
Disasters, such as earthquakes, can and will occur without notice. As a part of the AWIA RRA and ERP, Rialto has assessed the seismic risk and mitigation for water facilities.
The seismic hazards evaluated include fault rupture, liquefaction, and seismic shaking, and the City has assessed the threat to critical facilities, including the water system. Rialto has identified a set of hazard mitigation actions that are intended to reduce the impact of hazard, including:
City of Rialto
Water Shortage Contingency Plan DRAFT 15
• Conduct a seismic analysis of all City‐owned key facilities and retrofit vulnerable facilities.
• Consider locating wells outside of seismic hazard zones.
4.6 Shortage Response Action Effectiveness
Rialto has estimated the effectiveness of shortage response actions in Table 3 and Table 4 when data pertaining to such actions is available. It is expected that response actions effectiveness is also a result of successful communication and outreach efforts.
5.0 Communication Protocols
Rialto prioritizes effective communication, especially in times of a water shortage emergency.
Rialto has a protocol in place to communicate with the public, government agencies, and other interested parties about water shortages and any anticipated or triggered shortage response actions. Communication methods may include email, bill inserts, handouts, informative flyers, direct mail pieces to newspapers, bus shelter advertisements, news releases, social media outreach, and website content. Rialto provides reminders about shortage stages as they develop, and Rialto encourages conservation at all times.
6.0 Compliance and Enforcement
In the implementation of the water shortage contingency plan, the following penalties shall apply for any violation of the Rialto’s Ordinance, Number 1560 Sections 12.20.022, 12.20.023,
12.20.024, and 12.20.040: Water Conservation Requirements.
First Violation: Notice of Non-Compliance
A written warning shall be issued for the first offense.
Second Violation: Warning of Penalties
A written warning notice of the future imposition of penalties that could be placed on the customer's water bill shall be issued for the second offense.
Third Violation: Surcharge
A surcharge of one hundred dollars shall be added to that billing for the third offense occurring within a one-year period.
Fourth Violation: Surcharge
A surcharge of three hundred dollars, and installation of a flow-restricting device in the meter for a minimum of ninety-six hours (at customer's expense) shall be imposed for the fourth offense occurring within a one-year period. Said restricted flow shall meet minimum county health City of Rialto
Water Shortage Contingency Plan DRAFT 16
department's standards, if any have been established. If said ninety-six-hour period ends on a weekend or holiday, full service will be restored during the next business day.
Fifth Violation: Surcharge
A surcharge of five hundred dollars, and termination of water service at customer's expense for a two-day period shall be imposed for the fifth offense occurring within a one-year period. Prior to the termination of water service, the customer may request an administrative hearing pursuant to Section 1.10.050 of Ordinance No.1560.
7.0 Legal Authority
To offset the prolonged effects of a drought period or other emergency, the City Council adopted Ordinance No. 1130 in December 1990. The ordinance provides water conservation measures to minimize the effect of a water shortage on the citizens of the community. The ordinance includes provisions that will significantly reduce the waste and inefficient use of water, thereby extending the available water resources required for the domestic and fire protection needs of the City and general public. Rialto adopted Ordinance No. 1560 in May 2015, to update the sections regarding the four stages that make up the water conservation requirements. Ordinance No. 1560 is included in Attachment 1.
7.1 Declaration of Water Shortage
In accordance with CWC Section Division 1, Section 350, Rialto shall declare a water shortage emergency condition to prevail within the area served by such distributor whenever it finds and determines that the ordinary demands and requirements of water consumers cannot be satisfied without depleting the water supply of the distributor to the extent that there would be insufficient water for human consumption, sanitation, and fire protection.
7.2 Proclamation of Local Emergency
If a water shortage is approaching, Rialto shall coordinate with any of the cities and counties in its service area for the possible proclamation of a local emergency.
8.0 Financial Consequences of WSCP
Implementation
To ensure Rialto customers comply with Ordinance No. 1560 and CWC Chapter 3.3 (Excessive Residential Water Use During Drought), additional costs may be incurred to monitor and enforce City of Rialto
Water Shortage Contingency Plan DRAFT 17
response actions. The incurred cost may vary depending on the shortage stage and duration of the water shortage emergency. Additionally, Rialto may experience a reduction in revenue as a result of the enforcement actions. Rialto will mitigate these financial impacts through the use of available operating reserves and prudent financial management practices, including expenditure controls and prioritization of critical system operations and regulatory compliance.
9.0 Monitoring and Reporting
The water savings from implementation of the WSCP will be determined based on monthly production reports which are reviewed and compared to production reports and pumping statistics from prior months and the same period of the prior year. Under shortage conditions, these production reports could be prepared as often as daily. First, the cumulative consumption for the various sectors (e.g., residential, commercial, etc.) will be evaluated for reaching the target level. Then if needed, individual accounts will be monitored. Weather and other possible influences may be accounted for in the evaluation.
10.0 WSCP Refinement Procedures
The WSCP is best prepared and implemented as an adaptive management plan. Rialto will use results obtained from their monitoring and reporting program to evaluate any needs for revisions. Potential changes to the WSCP that would warrant an update include, but are not limited to, any changes to trigger conditions, changes to the shortage stage structure, and/or changes to customer reduction actions.
Any prospective changes to the WSCP would need to be presented to Rialto’s Board for discretionary approval. Once discretionary approval has been granted, Rialto will hold a public hearing, obtain any comments, and adopt the updated WSCP. Notices for refinement and the public hearing date will be published in the local newspaper in advance of any public meetings.
11.0 Plan Adoption, Submittal, and
Availability
Rialto adopted this WSCP with the 2025 RUWMP. The 2025 RUWMP and WSCP were made available for public review in May 2026, and a public hearing was held on May 26, 2026, to receive public input on the draft 2025 RUWMP and the WSCP.
City of Rialto
Water Shortage Contingency Plan DRAFT 18
The Rialto City Council adopted the 2025 RUWMP and the WSCP at a public meeting on May 26, 2026. The resolution of adoption is included as Attachment 2.
This WSCP was submitted to DWR through the WUEData portal before the deadline of July 1, 2026.
This WSCP will be available to the public on the City of Rialto website.
If Rialto identifies the need to amend this WSCP, it will follow the same procedures for notification to cities, counties, and the public as used for the 2025 RUWMP and for initial adoption of the WSCP.
City of Rialto References
Water Shortage Contingency Plan DRAFT 19
References
California Department of Water Resources. (2026). 2025 Urban Water Management Plan Guidebook. Sacramento: California Department of Water Resources.
Texas Living Waters Project. (2018). Water Conservation by the Yard: A Statewide Analysis of Outdoor Water Savings Potential. Austin: Texas Living Waters Project, Sierra Club, National Wildlife Federation. Retrieved from Texas Living Waters Project.
United States Environmental Protection Agency, Office of Water. (2002). Cases in Water Conservation: How Efficiency Programs Help Water Utilities Save Water and Avoid Costs. United States Environmental Protection Agency.
City o f Rialto Attachment 1
Water Shortage Contingency Plan DRAFT 20
Attachment 1
Rialto Ordinance No. 1560
1 City o f Rialto Attachment 2
Water Shortage Contingency Plan DRAFT 21
Attachment 2
Adoption Resolution
2 2025 RWUMP Part 4 City of Rialto Appendix E
E-7: Water Conservation Requirements - OrSBX7-7 Forms