Drinking Water Quality Updates
We are committed to transparency and keeping our customers informed about their drinking water. Below are answers to common questions related to recent Notices of Violation (NOVs) issued to the Glenwood and Canyon Lake Shores service area on February 20, 2026.
Why did I receive a Notice of Violation (NOV)?
You received a notice because state regulations require public water systems to notify customers when certain water quality standards or monitoring requirements are not met. These notices are part of required public communication, and the language in the notices is required per statute.
What are Total Trihalomethanes (TTHMs)?
TTHMs are compounds that can form when chlorine—used to disinfect drinking water—reacts with naturally occurring organic matter in the source water. Chlorine is essential for protecting public health, but it can sometimes result in these byproducts.
What do MCL and LRAA mean?
- MCL (Maximum Contaminant Level): The highest level allowed in drinking water. For TTHMs, this limit is 0.080 mg/L.
- LRAA (Locational Running Annual Average): A compliance calculation based on the average of the last four quarters of sampling at a specific location.
Why can a violation occur even if recent test results are improving?
Because the LRAA includes results from the previous four quarters, earlier elevated readings may still impact compliance even when newer results show improvement. As older data drops off, the average is expected to continue improving.
What actions are being taken to address this?
Here’s what we are doing to improve your water quality and prevent further issues:
- Increasing water system flushing to improve water circulation over our many miles of water main
- Decreasing the amount of time your water sits in storage tanks between when treatment has been completed and when it arrives at your home through operational changes that will cycle storage tank water
- Increasing the amount of water samples and the water quality monitoring we do each day
- Adjusting which water sources we use to optimize water quality based on source water conditions
- Investing in new long-term infrastructure upgrades to introduce more modern equipment and distribution system components
- Training and development of our teams and processes to improve our water quality monitoring and reporting procedures
What is a monitoring or reporting violation?
A monitoring or reporting violation occurs when required samples are not collected or reported on time. These violations do not automatically indicate unsafe water, but they require notification because regulators cannot confirm water quality for that period.
Why am I receiving repeat notices?
State regulations require public notices to be repeated every 90 days for as long as a violation remains unresolved, even when corrective actions are underway.
Are there health risks?
Long‑term exposure to TTHMs above the MCL over many years may increase the risk of liver, kidney, or central nervous system effects and may increase cancer risk. These potential effects are associated with long‑term exposure, not short‑term use.
What should I do if I am worried about health risks?
If you have concerns about potential health impacts, please contact your medical provider.
Do I need to boil my water, or can I buy bottled water?
No. Boiling water does not reduce TTHMs, and bottled water is not required. Customers may continue normal water use.