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The National Pollutant Discharge Elimination System (NPDES) is
a federal permit program under the Clean Water Act that is
administered in the Bay Area by the San Francisco Bay Regional
Water Quality Control Board, a part of the California
Environmental Protection Agency.
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An important element of CMSA's NPDES permit is a
requirement for two programs to regulate discharges
into the sanitary sewers, a Pretreatment Program and a
Pollution Prevention Program. Other important CMSA
source control activities are regulation of septic tank,
portable toilet, and grease trap wastes trucked to CMSA, as well as regulation of contaminated groundwater discharged
to the treatment plant. CMSA staff also participate
in efforts to prevent pollution of storm water.
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