The National Primary Drinking Water Regulations (NPDWR) are legally enforceable primary standards and treatment techniques that apply to public water systems. Primary standards and treatment techniques protect public health by limiting the levels of contaminants in drinking water.
[h2oIQ.org editor: Follow the link below to see the standards for the following categories:]
Microorganisms
Disinfectants
Disinfection Byproducts
Inorganic Chemicals
Organic Chemicals
Radionuclides
Full article: National Primary Drinking Water Regulations | Ground Water and Drinking Water