Water Quality Reports

The City of McKinney receives its water from the North Texas Municipal Water District (NTMWD), which is responsible for the operation of water treatment facilities and distribution to its member cities. The city operates a water distribution system that provides the water received to its residents and businesses. The City of McKinney has received and maintains a “Superior” rating from the Texas Commission on Environmental Quality (TCEQ).


The City of McKinney performs regular sampling and testing of its water distribution system throughout the year to comply with TCEQ and Environmental Protection Agency (EPA) requirements. Each year, the city produces a Water Quality Report for its residents and businesses that contains information about the McKinney water system including source water, the levels of detected contaminants and compliance with drinking water rules. The report includes data collected in the calendar year and the most recent required compliance test results, which is summarized and reported per TCEQ and EPA requirements. The report also includes data from sampling and testing performed by TCEQ on the McKinney water system.