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1 RiversideCA.gov1
RiversideCA.gov
2025 URBAN WATER MANAGEMENT PLANRiverside Public UtilitiesCity CouncilJune 23, 2026 RiversideCA.gov2
BACKGROUNDAn Urban Water Management Plan (UWMP) is required of every urban watersupplier as defined in the California Water Code Section 10610 et seq. and isupdated every five years for calendar years ending in “0” or “5”.On June 8, 2021, the Board of Public Utilities conducted a public hearing forreview of the 2025 UWMP; and recommend that the City Council adopt the2025 Urban Water Management PlanThe 2025 UWMP update must be adopted and submitted to the CaliforniaDepartment of Water Resources (DWR) by the July 1,2026.1 2 6/9/2026
2 RiversideCA.gov3
BACKGROUNDUrban Water Management Plans are:1. Required by the State2. Completed every 5 years3. Pre-requisite for certain loans and grants4. Foundational documents for new planning and development5. Support long-term and drought planning6. 25-year horizon RiversideCA.gov4
DISCUSSION1. The final guidance document for the 2025 UWMP was published in January 2026.2. RPU has prepared the UWMP in accordance with the UWMP Act, sections 10610 through 10656 of the California Water Code. 3. RPU coordinated with its wholesale water supplier, Western Municipal Water District (WMWD), in the preparation of the demand and supply estimates presented in the report. 4. In addition to WMWD, RPU requested input, data, and comments from 26 neighboring agencies and stakeholders. 3 4 6/9/2026
3 RiversideCA.gov5
UWMP CONTENTS1. UWMP Introduction and overview2. Plan Preparation3. Service Area Description4. Water use Characterizations5. SB X7-7 Baselines, Targets, and 2025 Reporting6. Normal-Year Water Supply Characterization7. Water Service Reliability/ Drought Risk Assessment8. Water Shortage Contingency Plan9. Demand Management Measures10. Plan Adoption/Submittal/Implementation RiversideCA.gov6
Updated Guidance for 2025 UWMPUpdates have included the following:1. Minor changes to the California Water Code2. Criteria for suppliers with multiple public water systems 3. DWR submittal tables4. Compliance with 2028 Water Loss Standard for Water loss reporting5. Direct potable reuse (highly treated recycled wastewater for drinking water use)6. Optional lower-income housing forecasting methodology7. Reporting groundwater recharge and other water storage 5 6
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4 RiversideCA.gov7
ACTUAL CUSTOMER WATER USE20252024202320222021History of Total ACTUAL DEMANDS63,16961,99057,83268,72468,198Potable 11,7659,7689,16413,16513,922Raw Water and Recycled Water Demand74,93471,75866,99681,88982,120Total Water Use:
RiversideCA.gov8
POPULATION PROJECTIONService Area Population Current and Projected Population 205020452040203520302025Population served 315,865313,124310,407307,714305,045302,398RPU service areaThe population was determined using the California Department of Finance data and projected growth7 8 6/9/2026
5 RiversideCA.gov9
PROJECTED WATER DEMAND20502045204020352030202574,19573,60373,20072,43671,86063,169Potable Water (AF)23,37023,37023,37023,37019,80011,765Raw water and Recycled Water Demand (AF)97,56596,97396,57095,80691,66074,934Total Water Use: (AF)Over the next 25-yearsAnnual water demand is estimated to increase: ~ 900 acre-ft/yr, or ~1% Total water demand is estimated to increase: 22,600 acre-ft, or ~ 30% RiversideCA.gov10
CURRENT WATER SUPPLIESExtraction/Export RightsBunker Hill•55,263 AFY ExportColton •2,728 AFY ExportRiverside North•10,902 AFY ExportRiverside South•16,880 AFY Extraction85,773 AFY Total 9 10
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6 RiversideCA.gov11
PROJECTED WATER SUPPLIESWater Supply Additional Detail2030 (AFY)2035 (AFY)2040 (AFY)2045 (AFY)2050 (AFY)GroundwaterBunker Hill 55,263 55,263 55,263 55,263 55,263GroundwaterRiverside North 10,902 10,902 10,902 10,902 10902GroundwaterRiverside South 16,880 16,880 16,880 16,880 16,880GroundwaterRialto-Colton 2,728 2,728 2,728 2,728 2728GroundwaterBanking BH Conjunctive Use0 2,000 2,000 2,000 2,000GroundwaterSeven Oaks Enhanced Phase II1,000 1,000 1,000 1,000 1000GroundwaterPERC 400 500 1,500 1,500 1,500GroundwaterStormwater Projects 0 2,000 4,800 6,300 6300Purchased or Imported WaterFrom WMWD 21,700 21,700 21,700 21,700 21,700Recycled WaterFrom RWQCP 5,700 9,750 9,750 9,750 9750Total114,573 122,723 126,523 128,023 128,023 RiversideCA.gov12
PROJECTED WATER SUPPLY VS. WATER DEMAND 200,000220,000240,000260,000280,000300,000320,000340,000360,000380,000400,000020,00040,00060,00080,000100,000120,000140,0002025 2030 2035 2040 2045 2050 Population
Acre-feetRPU Service Area PopulationDemand ProjectionSupply Projection11 12 6/9/2026
7 RiversideCA.gov13
AWSAD PROJECTED WATER SUPPLY VS. WATER DEMAND - 1,000.00 2,000.00 3,000.00 4,000.00 5,000.00 6,000.00 7,000.00 8,000.00Jul-22Aug-22Sep-22Oct-22Nov-22Dec-22Jan-23Feb-23Mar-23Apr-23May-23Jun-23Jul-23Aug-23Sep-23Oct-23Nov-23Dec-23Jan-24Feb-24Mar-24Apr-24May-24Jun-24Jul-24Aug-24Sep-24Oct-24Nov-24Dec-24Jan-25Feb-25Mar-25Apr-25May-25Jun-25 Acre FeetActual Water Demand vs Projected Demand from AWSAD FY 2022-2025Actual potable demand FYProjected potable demand AWSAD FY RiversideCA.gov14
WATER SUPPLY RELIABILITYNormal Year projected Supply and Demand Comparison205020452040203520302025128,023128,023126,523122,723114,573107,673Supply Totals (AF)97,56596,97396,57095,80691,66074,934Demand Totals (AF)30,45831,05029,95326,91722,91332,739Difference: (AF)13 14 6/9/2026
8 RiversideCA.gov15
2025 UWMP CONCLUSIONS1. RPU’s identified supplies exceed the expected demands through 2050 provided that it:a. Continues conservation effortsb. Implements long-range planning, and c. Develops new water supply projects2. RPU continues to meet customer demands in a cost-effective and environmentally responsible manner3. RPU effectively manages water resources by proactive planning and participating in regional supply efforts RiversideCA.gov16
Recommend that the City Council adopt a resolution adoptingthe 2025 Urban Water Management Plan prepared by the City ofRiverside’s Public Utilities Department.RECOMMENDATIONS15 16