Return to ASDWA's Newsroom

WQRF Releases Contaminant Occurrence Map

The Water Quality Research Foundation has released its new Contaminant Occurrence Map, which provides data in the United States for regulated drinking water contaminants that have an enforceable level (MCL or Action Level) above the health-based goal level (MCLG) and aesthetic contaminants.

This map pulls data from 46 state regulatory agencies, EPA’s Fourth Unregulated Contaminant Monitoring Rule (UCMR4) and the federal Safe Drinking Water Information System (SDWIS). The data was collected over the last 10 years for 57 different drinking water analytes. For more information and to access the interactive map, click here.