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.

Total Water Loss Control Workshops

The Texas Water Development Board (TWDB) is planning a series of training workshops employing the Total Water Loss Control Program; encompassing the Water Use Survey, the Water Loss Audit, the Annual Conservation Report, and Water Conservation Plan.

The workshops will focus on all aspects of water loss, including collecting and reporting correct data, assessing, auditing, and validating the reported data.

The Total Water Loss Control Program considers water loss from an environmental stewardship perspective, reviews public utility revenue loss, and promotes the protection of public health by eliminating the threat of sanitary defects associated with leaking or broken pipes.

Finally, these workshops will provide information on the assessment scale which helps to identify action items determined by the water loss audit. The workshops are approved for 4 hours of continuing education for licensed 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.

The Total Water Loss Control Workshops will begin in January 2020 and run through April 2020. See our Water Loss Auditor Training page for additional information.

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.