Wastewater Treatment

Onsite Wastewater Treatment System (OWTS)
An onsite wastewater treatment system (OWTS) is a system for collecting, treating, and dispersing wastewater that is not connected to a central wastewater treatment works.
Permitting & Licensing
OWTS Construction Permit
An OWTS Construction Permit is required for all new construction, as well as the installation, alteration (including expansion), repair, or replacement of an OWTS.
OWTS Use Permit
An OWTS Use Permit is required prior to the sale of a property served by one or more OWTSs and prior to issuance of a building permit (exceeding $30,000 in valuation) for a property already served by one or more OWTSs.
OWTS Contractor, Cleaner & Inspector Licensing
Systems contractors, cleaners, and inspectors must be licensed in Pitkin County. All licenses will be good for one year, expiring on December 31. In order to receive a license for Systems Contractor and Cleaners, the applicant must pass a test (to be taken every 3 years), provide evidence of appropriate credential, such as NEHA's Certified Installer, or be currently licensed in Eagle County. Systems inspectors must provide evidence of appropriate credentials, such as the NAWT Inspector Credential. System designers are not licensed through Pitkin County.

An affidavit verifying your lawful presence in the United States must be submitted with all license applications. A driver's license must be either presented in person, or the affidavit must be notarized if applying by mail.

Applications may be submitted by mail or in person by appointment only. To schedule an appointment, please call 970-920-5070 or email the Environmental Health Department.