San Antonio Water System has long been committed to protecting and preserving our most precious resource.
Since 2013, SAWS has engaged in proactive efforts to reduce non-revenue water — water that was produced or received from various sources, but never delivered or billed to a customer.
Non-revenue water is sometimes referred to as “water loss,” but that term can be misleading. While non-revenue water does include water “lost” through main breaks and leaking infrastructure, it also includes unbilled water use due to:
Authorized consumption
- Hydrant flushing
- Firefighting
- Water line flushing for health and safety
- Water used for sewer system cleaning and maintenance
Apparent losses
- Inaccurate meters at homes and businesses
- Water theft
- Data errors
In 2024, the SAWS Board of Trustees initiated a renewed focus on water stewardship, to ensure customers receive the best value possible for their monthly water bill payments.
After a series of intensive Board work sessions, a task force of 18 key SAWS leaders from across the utility was assembled to initiate, plan and execute a comprehensive water stewardship program.
2025 Water Stewardship Initiatives
The task force identified accurate measurement as the first step toward controlling and ultimately improving non-revenue water loss, accomplished by:
- Improved water production metering at the source
- Enhanced customer metering via ConnectH2O electronic meters
- More accurate estimates of water lost through breaks and leaks
- Better estimates of unbilled-but-authorized water use such as firefighting and line flushing/cleaning
2025 Water Loss Interventions
In addition to improvements in measurement outlined above, SAWS is committed to reducing “real” water loss through:
- Proactive leak detection
- Improved response time to repair leaks and breaks
- Exploring new technology
- Prioritizing water main replacement projects
Quarterly Update to SAWS Board of Trustees
Deputy Program Manager Richard Donat provided a briefing on the status of SAWS non-revenue water activities and initiatives to date.
View February 2025 Presentation
Non-revenue Water Monthly Performance Reports
In the spirit of transparency and accountability, SAWS makes its monthly non-revenue water reports available to the public.
Non-Revenue Water is a Nationwide Challenge
Water loss caused by aging infrastructure and inconsistent measurement is not unique to San Antonio. Cities across the U.S. are struggling to find new ways to measure and ultimately reduce the amount of water that is produced but not delivered or billed to customers.
Here are some resources that give a broader view of non-revenue water and the different ways it is being addressed around the nation.
The US will need to spend up to $200 billion dollars on water systems over the next 20 years.
AWWA - Controlling Non-Revenue WaterControlling Non-Revenue Water in Water Utilities: an AWWA eLearning Certificate Program
WaterWorld - Non-Revenue WaterNon-revenue water is a huge and costly problem—for utilities in the US and around the world.
Water Finance & Management - A Call to Action for Non-Revenue WaterA look at statewide efforts to eliminate the blind spot of water & revenue losses.