Colorado Groundwater: What you need to know

Colorado Water Quality Control Act, Colorado Revised Statutes 25-8-501 to 25-8-509

Colorado Discharge Permit System (CDPS) Regulations: 5 Code of Colorado Regulations (CCR), 1002-61 Section 1 to 1002-61 Section 18

Hazardous waste treatment, storage, and disposal facilities (TSDFs): 6 CCR 1007-3 Section 264.90 to 264.101

Groundwater classifications: 5 CCR 1002-41.4

Classification criteria: 5 CCR 1002-41.4(B)

Site-specific criteria: 5 CCR 1002-42.1 to 1002-42.34

Interim-status TSDFs: 6 CCR 1007-3 Parts 265.90 to 265.94

Well permitting: 2 CCR 402-2 and 2 CCR 402-7

Designated groundwater: 2 CCR 410-1-5

Colorado Department of Public Health and Environment (CDPHE) Office of Environment Water Quality Control Division

CDPHE Office of Environment Hazardous Material and Waste Management Division

Colorado Department of Natural Resources (DNR) Division of Water Resources

Colorado Ground Water Commission (Commission)

Colorado Oil and Gas Conservation Commission

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

• Rules. Colorado has established groundwater classifications and uses both narrative and numeric standards to classify groundwater to provide different levels of protection. These standards are basin or watershed specific.

Colorado's regulations for groundwater protection, monitoring, and corrective action at both permitted hazardous waste facilities and interim-status hazardous waste facilities generally follow the federal regulations.

• Administration and enforcement. Groundwater protection requirements at hazardous waste facilities, underground storage tanks (USTs), and the ...