Madison Water Utility’s testing team conducts more than a thousand tests every month to continuously monitor quality and safety. Our water more than meets strict Federal and State drinking water standards and complies with the Safe Drinking Water Act.
What we test for
Simple chemicals, minerals (inorganic compounds), radionuclides
Solvents, cleaners, pesticides, other man-made contaminants (volatile organic & synthetic organic compounds)
You can find a detailed report on our water quality monitoring process here.
Chlorine is used in very small amounts to destroy harmful water-borne viruses, bacteria and microbes.
Madison Water Utility follows the guidance of the Centers for Disease Control, State Department of Health Services, and Department of Public Health Madison-Dane County with respect to water fluoridation.
Water utility facilities
The City of Madison drinking water system consists of 22 active wells, 30 reservoirs (including five elevated water towers), and approximately 840 miles of interconnected water transmission and distribution mains. The Water Utility pumps ground water from a deep sandstone aquifer. Wells are 500-1100 feet deep and deliver water to localized regions of the city.
Distribution Sample Locations
Types and Frequency of Testing (PDF)
contaminants of emerging concern
Pharmaceuticals and Endocrine Disruptors