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Gilpin County Board of Health adopts stricter on‑site wastewater regulations
Summary
The Board of Health adopted updated Regulation 43 to align with state guidance, tighten inspection and setback standards, and require higher‑level treatment systems in some terrain; the regulation will take effect 45 days after adoption (projected March 13, 2026).
Gilpin County’s Board of Health adopted updated regulations for on‑site wastewater treatment systems on Jan. 27, 2026, aligning county rules with the Colorado Department of Public Health and Environment and tightening requirements aimed at reducing system failures.
"The main changes were those that were adopted by the state and they're all based on updated technology," Public Health Director Alisa Witt said, explaining the county’s Regulation 43 governs systems with flows under 2,000 gallons per day and that the county must adopt at least as strict a standard as the state. Witt said the county’s setback requirements will remain more stringent than many other counties because of Gilpin County’s rocky terrain and reliance on higher‑level treatment systems.
Staff said the updated rules strengthen inspection procedures, tighten design and installation checks (including licensed professional engineer review when required), and clarify when transfer‑of‑title inspections occur. Witt told the board the regulation will go into effect 45 days after adoption, projecting an effective date of March 13, 2026. There were no public comments during the hearing.
After discussion about the changes and safety improvements for septic installations, the Board of Health voted 3–0 to adopt Board of Health Resolution 26‑001, which will formally replace the prior local regulation and begin the statutory adoption timeline.
