Commissioners: “We will continue to value, respect, and support all individuals as we serve the people of Boulder County.” Read full message.

Immigrant Resources, including a Know Your Rights Booklet, available on the Immigration Resources webpage.

SepticSmart

SepticSmart (Onsite Wastewater Treatment Systems)

Our office is closed to the public. To schedule an inspection, please call 303-441-1564 and leave a voice message.

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Check Septic Records

Septic systems are the second most frequently cited source of groundwater contamination in our county. Unapproved, aging, and failing septic systems have a significant impact on the quality and safety of our water supply.

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Apply for a Permit or Property Transfer Certificate

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Onsite Wastewater Treatment System (OWTS) Professionals

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General Information for Property and Homeowners

Related Links

Onsite Wastewater Treatment System Data