Water Quality and Safety
Water quality is regulated by the State of Texas. The City of Allen is rated as a Superior Water system, the highest level possible.
Annual Water Quality Reports
The City’s water system is sampled and tested in accordance with State and Federal requirements to ensure the citizens of Allen have a safe, potable water supply.
The City’s pump station operators monitor system conditions 24 hours a day to ensure disinfectant concentrations at our ground and elevated storage towers remain in the specified concentration range. The disinfectant concentration range is important because it must be high enough to eliminate microorganisms while not getting so high that it harms those that consume the water.
Questions about Water Quality and Testing
In 2018, annual chlorine maintenance by the North Texas Municipal Water District prompted numerous questions about Allen's water quality and testing process. Please see our Question and Answer page to find more information about this state-approved system maintenance
Regular maintenance of water storage tanks help maintain the City's quality water supply. To keep the tanks in top working condition, the inside and outside of tanks must be painted regularly.
Building codes require a permit for a backflow device, which helps eliminate cross-contamination of the water system. The Water and Sewer Division closely monitors and these devices, especially those in high hazard areas such as restaurants or dentist offices. The City and state require a Backflow Test Report to be completed every six months or a year, depending on the location. Any certified plumber may perform this test. Residents may also choose from a list of backflow testers.