California Pretreatment Standards regulations & environmental compliance analysis

California Pretreatment Standards: What you need to know

Governing Law and Regulations

California pretreatment program federal approval: California Water Code (CWC) 13370.5

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Discharges to publicly owned treatment works (POTWs): California Government Code (CGC) 54739

Reporting requirements: 23 CCR 2233

Hazardous waste and transportable treatment units (TTUs): 22 California Code of Regulations (CCR) 67450.3

Pollution prevention (P2) plans: CWC 13263.3

Regulatory Agencies

California Environmental Protection Agency (Cal/EPA) State Water Resources Control Board (SWRCB) Division of Water Quality

Regional Water Quality Control Boards (RWQCB)

U.S. Environmental Protection Agency (EPA) Region 9

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. California is authorized by EPA to administer its own pretreatment program, and the state has adopted regulations meeting the federal requirements. The state also has pretreatment requirements for hazardous waste handling, pollution prevention (P2), and loans.

Administration and enforcement. In California, the pretreatment standards are usually administered and enforced by the local POTW. If the local POTW has not been authorized to administer the program, the SWRCB and RWQCB offices administer the program.

State Requirements


Industrial facilities that discharge their wastewater to a POTW do not need an individual National Pollutant Discharge Elimination System (NPDES) permit, but may have to pretreat the discharge before discharging to the POTW so that the POTW can meet its NPDES permit limits.

California has established responsibilities of state and local government, industry, and the public ...

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