8 ADDENDUM A
Water Loss Control Shared Services Election Form
Fiscal Year 2026-2027
FY26-27
Water Loss Control Shared Services
Agency:
Contact Person:
Contact E-mail:
Contact Phone:
Task 1: Water Audit Validation
Water audit validation will be conducted at Level 1 in accordance with the methodology established in the Water Research Foundation project 4369: Level 1 Water Audit Validation Guidance Manual.
Water audit validation aims to identify and appropriately correct for inaccuracies in water audit data and the application of methodology. Furthermore, validation also evaluates and communicates the uncertainty inherent in water audit data. To accomplish these goals, MWDOC’s validation Shared Service will follow the steps published in the Water Research Foundation Level 1 Water Audit Validation Guidance Manual. The process will include:
x Review the water audit and supporting documentation.
x Review performance indicators for evidence of inaccuracy. x Review audit inputs and data validity gr ades and confirm correct application of methodology in a Level 1 validation interview. Adjust inputs and dat a validity grades, if necessary.
x Review performance indicators again fo r evidence of persisting inaccuracy. x Document results.
MWDOC’s validation Shared Service will also employ the California-specific additional guidance developed by the California Water Loss Technical Assistance Program and subsequently taught in the Water Audit Validator (WAV) certificate course.
Validation results will be documented in a format acceptable to the Department of Water Resources. Templates for this format have been published by the California- Nevada section of the American Water Works Association on their WAV Certification webpage.
Deliverables include:
x Level 1 Validation Summary Notes
x Certified Validation Repor t (signed by validator)
Yes
No
$_________
Water Balance Validation is a Core service provided by MWDOC to its member agencies at no cost. MWDOC member agencies are
requested to check the box to the left indicating their choice to have MWDOC validate their annual water balance.
The Cities of Anaheim, Fullerton, and Santa Ana may access MWDOC’s Water Audit Validation service for a fee of $990 per validation.
City of Garden Grove
Robin Perlas
[email protected]
714-741-5378
9 Task 2:
Meter Accuracy Testing
Customer meter accuracy testing enables an agency to measure a retail meter’s performance and, consequently, the throughput that the meter fails to register. By measuring a meter’s inaccuracy, an agency can understand the financial loss it causes and develop a plan to manage meter performance within its system.
Customer meter tests will be conducted in accordance with the methodology set forth in American Water Works Association manual M6, Water Meters – Selection, Installation, Testing, and Maintenance. The stipulations in manual M6 include:
x Specific low, medium, and high flow rates for each meter type and size x Minimum test volume by flow rate and meter size
x Generally acceptable accuracy limits for new and repaired meters M6 also enumerates test procedures for laboratory tests and field tests that MWDOC staff and/or contractors will be required to follow.
Agencies can choose between two customer meter accuracy testing service providers: McCall’s Meters, Inc. or Westerly Meter Service Company. The Meter Accuracy Testing (MAT) Worksheet, Attachment 2 to this document, summarizes the fees for each mete r accuracy testing service provider. Note that the fees are slightly different between providers. As a result, each service provider has its own MAT Worksheet. Agencies will need to:
x Select the meter accuracy testing company of their choice, x Identify the number and sizes of meters to be tested (green data entry cells), and x Estimate the number of meetings (McCall’s) or hours and mileage (Westerly) for meetings with the selected company.
This worksheet should be used to calculate the total cost for meter accuracy testing services for your agency. The cost estimate calcul ated in the MAT Worksheet should be entered into the shaded cell immediately below. E Source is available to assist agencies in quantifying the number and sizes of meters to be tested, and in interpreting the results, as part of Task 3: Component Analysis of Apparent Losses.
Small-meter (5/8 – 2 inch) testing wil l require agencies to remove the meters from the field and deliver them to the selected meter-testing company. Meter testing company locations are provided below. Large meters (3 inches and larger) will be tested in-situ.
McCall’s Meters, Inc. Westerly Meter Company
1498 Mesa View Street 193 7 W. Eleventh St. Suite E
Hemet, CA 92543 Upland, CA 91786
(951) 654-3799 (951) 205-3725
Deliverables include:
x Meter accuracy testing results
x Warehousing of test results data
$
$_________
$________
MWDOC Administrative Fee Charged Per Meter Accuracy Test Invoice Processed, Not to Exceed Four Charges per Fiscal Year = $346
Input the total dollar amount calculated in the MAT Worksheet. Task 2 Total 11,384.00
1,384.00
10,000.00
10 Task 3a:
Distribution System Leak Detection
Leak detection will be conducted using a comprehensive acoustic survey, meaning that leak detection technicians will sound all accessible appurtenances regardless of spacing distances. The following protocols will be adopted for leak detection:
x Sounding points: Physical contact and sonic leak sound amplification will occur for each hydrant, and customer service connection. Valves may be used as contact points, if necessary. x Sonic ground listening (hard cover): When normal contact points are not available or cannot be created within a reasonable distance, sonic ground listening devices will be used by making ground contact directly over the pipe at intervals no greater than six (6) feet when ground cover is pavement, concrete, or a similar hard surfac e. If excessive ambient noise precludes the effectiveness of the ground listening device in an area during daytime hours, then survey will be considered during nighttime hours. Such situations will be pre-approved with retail agency staff before any night surveying is undertaken.
x Sonic ground listening (soft cover): When normal ground contact points are not available and ground cover is not a hard surf ace, probe rods will be used at 10-foot intervals. A sound amplifier will be used on probe rods
x Verification: All indications of leaks found during initia l survey will be verified a second time, after which the leak will be pinpointed with a computer-based leak sound correlator whenever possible. Pinpointing leak locations through interp retation of sound intensity, whether by ear, decibel metering, or comparable methods, will be used when contact points are available for access with a computer-based leak sound correlator.
MWDOC staff will perform distribution system leak detection at a cost of $350 per mile of distribution main surveyed for MWDOC member agencies and $374 per mile for non-member agencies. Metropolitan will contribute $170 per mile thereby reducing the cost to $180 per mile to member agencies. Deliverables include:
x Distribution System Leak Detection Plan
x Weekly progress reporting and leak verification
x Final Reporting
x Training for measuring leak rates in gallons per minute Please note that in order to be eligible to receive Metropolitan funding, participating agencies must provide leak repair results. All leaks must be investigated, repaired, or slated for repair, and their status reported to MWDOC within 60 days of the completion of the leak survey. If a MWDOC member agency does not report this information to MWDOC within 60 days, the member agency will have to pay the full cost of the survey at $350 per mile. MWDOC may also perform visual/acoustic verification of repairs as needed to satisfy Metropolitan funding requirements.
Participating agencies must elect a minimum of 50 miles or the full system, whichever is less.
$_________
Task 3a total = miles X $180 for MWDOC Member Agencies Task 3a total = miles X $374 for the Citie s of Anaheim, Fullerton, and Santa Ana
22039,600
11 Task 3b: Suspected Leak Survey
MWDOC staff will perform a suspected leak survey at a cost of $683 per leak investigation. The methodology to detect suspected leaks will employ the same process described in Task 3a. Deliverables include:
x Suspected leak consultation
x Field leak investigation
x Written report and pinpointed leak location
Please note that pricing may vary if the suspected leak survey area extends beyond one city block. For assistance in determining suspected leak survey costs for your needs, please contact Rachel Davis at the number or e-mail address below.
Municipal Water District of Orange County Rachel Davis
Water Loss Control Programs Supervisor (714) 593-5308
[email protected]
Please see Attachment 1 for more details.
$ Task 3b Total = number of suspected leaks X $683
Task 4: Distribution System Pressure Survey
The methodology used for pressure surveying depends on the survey goal of: 1) Average zonal and system pressure survey, or 2) Pressure transient survey using high frequency logger. Methodology must be agreed upon with each agency before surveying begins. The methodology to be determined includes:
x Logger settings (e.g., sampling and recording frequencies) x Logger deployment locations
x Logger deployment durations
x Analysis of data after logger retrieval
1) Average Zonal and System Pressure Survey
Pressure loggers can be deployed to evaluate the pressure range in a system or zone, which can then be used to estimate the average system or zonal pressure. Loggers should be placed strategically to capture the highs and lows of each pressure zone in the system. The survey methodology must be tailored to the infrastructure being studied.
2) Pressure Transient Survey
A pressure transient survey identifies instantaneous, damaging pressure swings caused by infrastructure malfunctions, sudden and significant demand changes, or rapid hydrant operation. Pressure transients move quickly and can only be identified with a high sampling frequency. At a minimum, loggers should be deployed immediately upstream and downstream of pressure-regulating infrastructure suspected of transient production.
The resulting data analysis will include:
x Transient identification using a relative or absolute amplitude threshold o Absolute: transient amplitude
o Relative: ratio of transient amplitude to average location pressure x Temporal transient alignment to study the direction and speed of transient propagation MWDOC staff will perform a distribution system pressure survey at a cost of $4,157 per 8-logger survey. $ Task 4 Total = number of 8 logger surveys X $4,157. 12 Fiscal Year 26-27
Year 8
Summary of Shared Services Elections:
(transfer total for each Shared Service above to this summary table) Task 1: Water Audit Validation Yes
No
$ (3-Cities only)
Task 2: Meter Accuracy Testing
Total Elected Amount
Less Rollover Funds to be Applied
*Indicate task #(s) to move $ from
$
$
Task 3a: Distribution System Leak Detection
Total Elected Amount
Less Rollover Funds to be Applied
*Indicate task #(s) to move $ from
$
$
Task 3b: Suspected Leak Survey
Total Elected Amount
Less Rollover Funds to be Applied
*Indicate task #(s) to move $ from
$
$
Task 4: Distribution System Pressure Survey
Total Elected Amount
Less Rollover Funds to be Applied
*Indicate task #(s) to move $ from
$
$
Total Elected Amount: $
Less Total Rollover Funds to be Applied: $
Total Amount to be Invoiced: $
(continues on next page)
Check One;
F Invoice Upon Receipt
F Invoice July 1, 2026
Type text here
5,325.00
39,600.00
0 0
0 0
0 5,325.00
11,384.00
50,984.00
45,659.00
13 By: By:
Date: Date:
Harvey De La Torre, General
Manager
Name:
Title:
Municipal Water District of Orange County Agency:
Lisa L. Kim
City Manager
City of Garden Grove
14 Attachment 1
Water Loss Control Shared Services
Suspected Leak Survey
Background:
MWDOC’s Suspected Leak Survey Shared Services has evolved into two distinct elections based on the varying needs of member agencies. The first election is a Known Area Suspected Leak Survey of an isolated geographic area and requires a simple and limited investigation. The “Known Area” leak survey is billed at a flat rate as defined in Task A below.
The second election is an Unknown Area Suspected Leak Survey of a broader geographic area and requires significantly more investigation and time to complete than a “Known Area” survey.
The “Unknown Area” leak survey is billed based on actual time spent planning, executing, and reporting the investigation.
MWDOC staff will evaluate each suspected leak investigation request and inform the requesting agency whether the investigation falls under Task A or Task B, as described below. Before initiating the “Unknown Area” leak survey, MWDOC staff will provide the requesting agency with an estimated, not-to-exceed cost for the investigation.
Task A:
Known Area Suspected Leak Survey
MWDOC staff will perform a suspected-leak survey at a cost of $651 per investigation. The leak investigation area shall not exceed one standard city block. MWDOC will listen to all meters and hydrants within the survey area using appropriate acoustic equipment. Digital Correlating loggers will be placed on valves and other appurtenances as needed to perform leak correlations. These loggers are more s ensitive than the human ear, accurately registering and locating leaks by tuning into the leak’s digital sound signature. Other techniques, such as visual inspection and chlorine residual testing, may be used if applicable.
Deliverables include:
x Suspected leak consultation
x Field leak investigation
x Written report documenting findi ngs and leak location if found $ A Total = number of suspected leaks X $683
15 Task B:
Unknown Area Suspected Leak Survey
MWDOC staff will perform a suspected leak survey at its cost, including time and materials. The leak investigation area ma y expand beyond a city block and may change during the course of the investigation. MWDOC will listen to meters and hydrants within the survey area using Acoustic Digital Water Leak Detectors. Correlating loggers will be placed on valves and other appurtenances as needed to perform leak correlations. These loggers are more sensitive than the human ear, accurately registering and locating leaks by tuning into the leak’s digital sound signature. Other techniques such as visual inspection and chlorine residual testing may be used if applicable.
Deliverables include:
x Suspected leak consultation
x Field leak investigation
x Written report documenting finding s and leak location, if found Note that the value below is an estimated, not to exceed cost. Because the exact location of the leak is not known and may evolve during the survey, the estimated cost is also subject to change.
$
Task B Estimated Total based on Time and Materials = $
16 Attachment 2
Meter Accuracy Testing (MAT) Worksheet
McCall’s Meters, Inc.
McCall's Meters, Inc.
Meter Accuracy Testing Fee Worksheet
Participating Agency:
Contact Person: Phone
& Email:
Rate Quantity Total
Small Meter Testing
5/8 - 1 in. $45.00 $
1 1/2 in. and up $60 to $65 (1) $
3 in. Turbine $80.00 $
Large Meter Testing
3 in and up. $225 (2) $
Rates for Pickup or Delivery of Meters $125/hour
Rates for attending meetings $125/day $
Total: $
(1) Fixed rate of $60 for non-turbine meters and $65 for turbine meters. (2) Requires a minimum of 4 meters per day; If less than 4 tests, a portal-to- portal fee of $125 will be charged.
17 Attachment 2
Meter Accuracy Testing (MAT) Worksheet
Westerly Meter Service Company
Rate Quantity Total
Small Meter Testing
5/8 - 1 in. $30.00 $
1 1/2 in. and up $70.00 $
3 in. Turbine N/A $
Large Meter Testing
3 in and up. $200 $
Rates for Pickup or Delivery of
Meters
No Charge (1)
Rates for attending meetings $150/hr. + mileage $
Total: $
(1) No charge for orders transport of over 50 meters. Transport of less than 50 is based on time and mileage
50 10,000
Type text here
10,000