California Groundwater regulations & environmental compliance analysis

California Groundwater: What you need to know

Governing Law and Regulations

California Safe Drinking Water and Toxic Enforcement Act, California Health & Safety Code (CH & SC) 25249.5 to 25249.13

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Groundwater program: California Porter-Cologne Water Quality Control Act, California Water Code (CWC) 13001 to 13898.5

Groundwater classification: 23 California Code of Regulations (CCR) 3900 to 3989

Wells: CWC 231

Groundwater classification: 23 CCR 3900 to 3989

Hazardous waste management units:

Groundwater monitoring requirements: 22 CCR 66264.97 and 22 CCR 66265.97

Pesticide applications: 3 CCR 6800 to 6808

Animal confinement facilities: 23 CCR 3971

Groundwater withdrawal: CWC 10750 et seq.

Sustainable groundwater management: Senate Bill (SB) 1168, SB 1319, and Assembly Bill (AB) 1739

Regulatory Agencies

California Environmental Protection Agency (Cal/EPA) Department of Toxic Substances Control (DTSC)

Cal/EPA Water Resources Control Board (WRCB) Division of Water Quality

Cal/EPA WRCB Division of Drinking Water (DDW)

Cal/EPA Department of Pesticide Regulation (DPR) Groundwater Protection Program

California Department of Agriculture

California Department of Water Resources (DWR) Division of Planning and Local Assistance

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. California's requirements for groundwater monitoring are more stringent than the federal regulations. The state requires more frequent testing than is required under the federal rules.

In September 2014, California passed legislation to strengthen local management and monitoring of groundwater basins.

Administration and enforcement. California's groundwater quality program is administered and ...


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