Septic Tank Inspectors in Colorado

Cities in Colorado

Colorado Septic Regulations

Colorado septic systems are regulated by the Colorado Department of Public Health and Environment (CDPHE) and local county health departments under the On-site Wastewater Treatment System rules (Regulation 43). Permits are required for the installation, alteration, and repair of onsite wastewater treatment systems, and a site evaluation and soil test are mandatory before approval.

• Onsite wastewater permits are issued by the local county health department under CDPHE authority and require a site evaluation and soil test.
• Colorado requires licensed installers and certified inspectors for onsite wastewater treatment system installation, repair, and inspection.
• Regulation 43 establishes minimum setback distances from wells, surface waters, and property lines for all onsite wastewater systems.
• Colorado does not mandate a statewide time-of-transfer septic inspection, though some counties require one at sale or for specific loan types.
• Systems must be designed to meet CDPHE standards based on site and soil conditions, including percolation test results and vertical separation to groundwater or bedrock.
• County health departments maintain records of permitted systems — contact the local county health department for records before purchasing property.

Source: Colorado Department of Public Health and Environment (CDPHE) / Local County Health