Source: U.S. Environmental Protection Agency, 1994, EPA 810-F-94-001A (February) (Washington, D.C.: U.S. EPA Office of Water).
^Indicates original contaminants with interim standards which have been revised.
tAction level = 0.015 mg/L
TT = Treatment technique requirement
MFL = Million fibers per liter pCi = picocurie—a measure of radioactivity mrem = millirems—a measure of radiation absorbed by the body
Runoff of herbicide from crop and noncrop applications
Runoff of herbicide onland & aquatic weeds
Chemical production by-product; impurity in herbicides
Herbicide on crops, land/aquatic weeds; rapidly degraded
Pesticide on insects, rodents, birds; restricted since 1980
Herbicide on grasses, weeds, brush
Pesticide production waste by-product
Pesticide production intermediate
Insecticide on apples, potatoes, tomatoes
Coal tar coatings; burning organic matter; volcanoes, fossil fuels PVC and other plastics Herbicide on broadleaf and woody plants Herbicide on grass sod, some crops, aquatic algae Herbicide production; dye carrier Solvent in rubber, other organic products; chemical production wastes
Decay of radionuclides in natural and manmade deposits
Decay of radionuclides in natural deposits
Decay of radionuclides in natural deposits Natural deposits Natural deposits
Natural deposits; smelters, glass, electronics wastes; orchards Drinking water chlorination by-products
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