The Water Map

Missouri

Missouri drinking water quality

Every public water system in Missouri we've verified. Each report covers one calendar year and shows the utility's own measured contaminant levels against federal limits.

Want the national picture? See where Missouri lands in our ranking of the states with the most open health-based water violations, pulled from the EPA's own records for every U.S. public water system.

1,634 water systems mapped in Missouri · showing the 800 with the most contaminant flags — explore them all on the map

Browse all 1,634 systems A–Z:12345