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On-Site Water and Wastewater

What We Do At On-Site

Septic System Permits

New construction or upgrades to a septic system for a single-family or duplex home requires a permit.  To obtain a septic permit; a system design, with the soils and site information is submitted to the On-Site Water and Wastewater Program by a registered civil engineer.  The permit application is reviewed by staff to ensure that it meets the requirements of Anchorage Municipal Code and if requirements are met a permit is issued.

For more information go to Wastewater Permit

Water System Permits

A new well or a water storage system for a single family or duplex home requires a permit.  To obtain a well permit, a site plan showing specific information must be submitted to the On-Site Program.  The application package will be reviewed by staff to ensure it meets the requirements of the Anchorage Municipal Code and if requirements are met a permit is issued.

For more information go to Well Permit

Certificate of On-Site Systems Approval (COSA)

Municipal code requires a home with a septic system or well to have a COSA prior to the transfer of ownership.  The seller is responsible for obtaining this certificate, which certifies a registered engineer has tested the on-site systems, that they are adequate for the home they serve, and that they meet code requirements. The test results and other data collected are submitted to the On-Site Program for review and issuance of the COSA. The Department randomly selects systems for site inspection.

For more information go to Certificates of On-Site Systems Approval 

Waivers

Some existing homes requiring an upgrade of their on-site systems cannot meet the code required separation distances.  A home may be eligible for a separation distance waiver for the new system, which is determined on a case-by-case basis using standard  procedures issued by the State of Alaska Department of Environmental Conservation.

For more information go to Waiver page.

Subdivision Plan Review

New Subdivisions within the Municipality of Anchorage that will be served by on-site systems require a review.  The subdivision review includes assessment of site conditions and the ability of the site to support on-site systems.  Costs of subdivision reviews are included in the fees paid to the Planning Division, Community Development Department.

For more information go to Subdivision Information

Business Certification 

The On-Site Water and Wastewater Program requires manufacturers, excavators, engineers, septic pumpers, well, drillers and well pump installers to be certified. The On-Site Program conducts certification seminars for engineers, excavators, well drillers and well pump installers for this purpose.

For more information go to Cerfitied Professionals

    • On-Site Water and Wastewater
    • Director: Jerry Weaver
    • 4700 Elmore Road, Anchorage, AK 99507
    • 907 343-7904