Gilpin County has adopted updated regulations governing Onsite Wastewater Treatment Systems (OWTS) in accordance with new requirements from the Colorado Department of Public Health and the Environment (CDPHE).
CDPHE recently finalized a new version of Regulation 43, which establishes standards for the design, installation, inspection, and repair of OWTS serving flows of 2,000 gallons per day or less. All Colorado counties are required to adopt local regulations this year.
Gilpin County has adopted Regulation 43 in its entirety, along with several additional requirements specific to local conditions. The updated regulations will take effect March 13, 2026.
Contractor Information Meeting
Public Health will host a meeting to review the major changes and answer questions:
📅 March 11, 2026
🕔5:00 p.m.
📍Old Courthouse, 203 Eureka Street, Central City
Contractors, installers, and industry professionals are encouraged to attend and share feedback. The goal is a collaborative process that supports high-quality installations, inspections, and repairs throughout Gilpin County.
Learn More
The full regulations are available on the Gilpin County Public Health Septic and Well Information page.
If you are unable to attend the meeting, questions or comments may be emailed to myaun@gilpincounty.org.