Water Loss Audit Resources

TWDB Services

TWDB staff is available to work with utility managers in providing on-site water audit assistance. TWDB staff is able to perform consultant type work and review the water audit worksheet with utility managers so they may have an understanding on how the water audit benefits the utility.

TWDB loans acoustical leak detection and ultrasonic flow meter testing equipment to help assist utilities identify leaks and determine flow rates. How to borrow this equipment.

Please contact WLA-Group@twdb.texas.gov for questions.

Currently, all retail public water systems with more than 3,300 connections or a financial obligation to TWDB are required to complete and submit a Water Loss Audit annually. All other retail public water suppliers are required to submit a Water Loss Audit to the agency every five years. The next five-year deadline to submit an audit is for the 2020 reporting year, due May 1st, 2021.

Water Loss Use and Conservation (WLUC) Workshops

The Texas Water Development Board (TWDB) will be conducting two training webinars based on the water use survey, water loss audit, and water conservation reports. Information on TWDB’s financial assistance and Texas Commission on Environmental Quality’s financial, management, and technical assistance programs will be included.

The WLUC workshops will be held 8:00 a.m. to noon, Thursday, April 8 and Thursday, April 22. Attendance at these workshops satisfies the legislative requirement under 31 Texas Administrative Code (TAC) § 358.6 (b)(4), requiring water loss auditor training prior to submitting a water loss audit to TWDB. Retail public water suppliers should find these workshops helpful as all retail public water suppliers are required to submit a 2020 water loss audit by May 1, 2021.

The WLUC workshops, part of TWDB’s Technical Assistance for Water Loss Control program (TAWLC), looks at water loss from a water stewardship perspective. Public utility revenue loss, collecting and reporting accurate data, assessing, auditing, and data validation will be reviewed. Data validation is accomplished using TWDB’s assessment scales which help utilities identify action items for water loss control.

The WLUC workshops are provided at no cost to participants and approved for 4 hours of continuing education for licensed water operators through the Texas Commission on Environmental Quality.

Attendance at these workshops also satisfies the legislative requirement under 31 Texas Administrative Code (TAC) § 358.6 (b)(4), requiring water loss auditor training prior to submitting a water loss audit to the TWDB. The training requirement can also be satisfied by viewing a pre-recorded training video.

See our Water Loss Auditor Training page for additional information on training.

The Total Water Loss Control Workshop presentation can be found here.

Additional Resources

• WUS and WLA Checklist for Retail Utilities
• Trouble shooting for Negative Water Loss Components
• Water Loss Audit Worksheet Instructions
• Guidance for Assessment Scale
• Assessment Scale Table
• Guidelines for Setting a Target Infrastructure Leakage Index (ILI)
• Water Loss Audit Manual for Texas Utilities (Updated March 2008)
• Main line Loss Calculator
• Monthly Water Loss Report
• TWDB Equipment Loan Form (open in PDF to sign and submit)
• Water Loss Control Planning Guide

For further information or questions, please contact conservation staff.