2023 Census of Missouri Public Water Systems

The report also includes test results for selected chemicals, along with the different types of treatment used by Missouri water systems. This information can be useful to citizens, water systems, public officials, consulting engineers and regional planners who want to learn more about a public water system.

The 2023 Census of Missouri Public Water Systems, as well as reports from previous years, is available online at dnr.mo.gov/water/hows-water/water-we-drink/drinking-reports/census-public-systems. The department prepares the census annually as required by Section 640.120 of the Revised Statutes of Missouri.

The department provides other information on Missouri’s public water systems:

• Annual Consumer Confidence Reports for information about each community’s water system at dnr.mo.gov/ccr.
• Annual Compliance Report, which documents public drinking water system compliance with the Safe Drinking Water Act at dnr.mo.gov/water/hows-water/water-we-drink/drinking-reports/compliance.
• Drinking Water Watch website for information regarding individual water system compliance and monitoring data at dnr.mo.gov/DWW/landing_MO.jsp.

For more information, contact the Missouri Department of Natural Resources’ Public Drinking Water Branch at P.O. Box 176, Jefferson City, MO 65102-0176. By phone, contact Nicole Mortenson at 573-751-8526.