Person drinking from a clear glass of water

Each year, by July 1, community water supplies are required to make Consumer Confidence Reports available to their customers. These reports enable Missourians to make knowledgeable decisions about their health and their environment and provide consumers with the following information:

  • The lake, river, aquifer or other source of the drinking water
  • Brief summary of the local drinking water source's susceptibility to contamination, based on the source water assessments
  • How to get a copy of the water system’s complete source water assessment
  • The level, or range of levels, of any contaminant found in local drinking water, as well as the federal health-based standard (maximum contaminant level) for comparison
  • The likely source of any contaminant in the local drinking water supply
  • Potential health effects of any contaminant detected in violation of health standards, and an accounting of the system’s actions to restore safe drinking water
  • The water system’s compliance with other drinking water-related rules
  • Educational information on nitrate, arsenic, or lead in areas where these contaminants are detected above 50% of federal standards
  • Phone numbers for additional sources of information

Annual Update

Consumer Confidence Reports are updated online each year by April 1. Information and instructions for community water supplies can be found below, along with the required certification form that must be submitted to the department by Oct. 1 each year.

Search Consumer Confidence Reports

As part of our commitment to public health protection and the public's right to know, the Missouri Department of Natural Resources is making it easier for community water systems to get their Consumer Confidence Reports into the hands of their customers.