Utilities are not required to test for ammonia, but this contaminant can cause many water quality issues if not properly treated (e.g., nitrification, chlorine demand and corrosion). Ammonia often occurs in sources with others subject to Secondary Maximum Contaminant Levels (SMCLs), and many systems are under pressure to provide treatment. In order to provide utilities, and particularly small systems, with an overview of the state of the science for SMCLs and ammonia treatment, the AWWA Inorganics and Inorganic Contaminants Research Committees Project Team created two informative documents using funding from the AWWA Technical & Education Council.
Drinking Water Contaminant Human Health Effects Information
U.S. Environmental Protection Agency (EPA)
U.S. Geological Survey (USGS)
Centers for Disease and Control Prevention (CDC)
World Health Organization (WHO)
El Paso County Health
The National Bureau of Economic Research
World Resources Institute
National Water Quality Monitoring Council
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