Water Quality

The City of St. Louis Water Division is dedicated to supplying the highest quality water.

Since 1835, the City of St. Louis Water Division has been dedicated to supplying the highest quality water to our customers. We are proud to say that in 2010, our water met or exceeded the standards set by the U.S. Environmental Protection Agency and the Missouri Department of Natural Resources.   

Our scientists constantly monitor and test the water for over 150 possible contaminants. We analyze the water where it enters the plant as raw river water, throughout the treatment process, and at multiple points throughout the city. The frequency and thoroughness of these tests exceed federal regulations for water quality monitoring. Water quality monitoring of St. Louis City water in 2005 indicated that no compounds were detected above the allowable levels set by federal and state regulations. The information our scientists gather is compiled in the Water Quality Report. 

Water Quality Reports

Access the latest annual water quality reports.

More Information

We routinely see issues with cloudy water. Most of the time, what is reported as cloudy water is not actually a quality problem at all. 

Read the About 'cloudy' or 'milky' water information page to understand what causes water to look cloudy.

Report a Water Quality Issue


Use the online form to report a Water Quality Issue.

By Phone

If at any time, however, you feel that the quality of your water is not up to your standards, feel free to contact Frank Genovese, Water Production Engineer.

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