Water is vital to our health. The Missouri EPHT program works closely with the Missouri Department of Natural Resources and other organizations to ensure there is clean water for drinking, recreation, tourism, and continued economic growth.
Public drinking water in Missouri is routinely tested for chemicals and bacteria. Individuals can have their private drinking water well tested by going through the local health department or by contacting the State Public Health Laboratory.
Annually, the DHSS and the Missouri Department of Conservation test fish statewide for contaminants. DHSS then interprets the test results, issues advisories, and publishes fish consumption recommendations for the Missouri Fish Advisory.
About 88 percent of Missourians are served by public water systems.
DHSS recommends testing your private drinking water well periodically.
All recreational water can have bacteria in it that can make you sick if you swallow it.
Whether you are taking advantage of one of Missouri’s wonderful natural bodies of water or enjoying a day at a pool, spa, or water park, you can stay safe and healthy by following the recommendations provided in our ‘Swim Safe, Stay Healthy’, ‘Healthy Swimming’, and ‘Blue-Green Algae’ brochures.For more information, contact the Department of Health and Senior Service's Bureau of Environmental Epidemiology, at (573) 751-6102.
Data Files NEW
- Mean analyte concentration (1999-2017) by year
- Distribution of number of public water systems and people served by mean and maximum analyte concentration (1999-2017) by year
- Distribution of number of public water systems and people served by mean and maximum analyte concentration (1999-2017) by quarter
- Number of people receiving water from public water systems (1999-2017)
- Description of public water systems by year and source
Maps, Charts, Graphs and Tables
- Private Drinking Water NEW
- Harmful Algal Blooms and Blue-Green Algae NEW
- EPA’s Region & Impaired Waters
- EPA Water Quality Criteria
- USGS Water Data for Missouri
- USGS Water Use in the United States
- USGS Water Quality Criteria
- University of Missouri Extension - Water Quality
- Missouri Boil Orders
- Census of Missouri Public Water Systems
- Drinking Water Annual Reports
- Water Protection Program Public Notices
- Report an Inquiry/Question/Concern to Missouri
- Report Clean Water Complaints to Missouri's Attorney General