laboratory flasks with clear liquid

​Water Quality Laboratory

The city of Thornton water quality laboratory is charged with ensuring that the city's drinking water meets all state and federal drinking water regulations. Thornton has a qualified staff of water utility professionals that understand the importance a water supply plays in the overall quality of life for its community. They are dedicated to providing customers with the best quality of water that is possible. The water quality laboratory provides water sampling, monitoring and testing using approved procedures and methods in accordance with all regulatory requirements.

Laboratory AnalystTreated water is collected and analyzed weekly at both Wes Brown and Thornton Treatment Plants and in the city of Thornton water distribution system. Raw water sources are also sampled and closely monitored to protect the quality of Thornton's drinking water. And, in addition to providing safe drinking water for Thornton's customers, the laboratory prepares and distributes an annual Water Quality Consumer Confidence Report and investigates water complaints.

Taste and odor of the water: You may notice a pondy or dirty taste and odor in your drinking water. These aesthetic changes happen every year and are caused by algae in our water storage reservoirs. We are aware of increased taste and odor currently present in the water and we continually adjust treatment processes to minimize any disruption for our customers. Although the water remains safe to drink, it is understandable if you have lingering concerns.  You are encouraged to contact Water Quality for more information (updated 10/10/2018).

If you have any questions or concerns about your tap water, please email WaterQuality@CityofThornton.net or call the Water Quality Line at 303-255-7770.