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OWTS Permits and Fees
septic professional putting a hose into a septic tank

Onsite Wastewater Treatment Systems Permits and Fees

Submit Your Application

Boulder County Public Health reviews and approves onsite wastewater treatment systems (OWTS) to protect water quality. This ensures that OWTS are properly constructed and in good working order.

If you have questions regarding a specific situation, please contact HealthOWS@bouldercounty.gov.

OWTS Permits, Services, and Fees

Permit Type or ServiceFeeIncluded in Fees
New Construction Permit$3,023.00Permit fee includes the following: 1 site inspection, 2 design revisions (if applicable), up to 1 hour of consultation time, 1 open hole (if required by BCPH), 1 final inspection, 1 lift station/warning device inspection, 1 house connect inspection, issuance of use permit.
Major Repair Permit Associated with Property Improvements (Fees effective July 1, 2024)$3,023.00Permit fee includes the following: 1 site inspection, 2 design revisions (if applicable), 1 hour of consultation time, 1 open hole (if required by BCPH), 1 final inspection, 1 lift station/warning device inspection, 1 house connect inspection, issuance of use permit.
Major Repair Construction Permit$1,823.00Permit fee includes the following: 1 site inspection, 1 design revisions (if applicable), 1 open hole (if required by BCPH), 1 final inspection, 1 house connect inspection, issuance of use permit.
Minor Repair Construction Permit$1,223.00Permit fee includes the following: 1 site inspection (if required by BCPH), 1 design revision (if applicable), 1 final inspection, issuance of use permit.
Property Transfer$500.00Fee includes document review and issuance of certificate
Use Permit Renewal (including O&M)$100.00Permit fee includes review of maintenance records and issuance of new use permit
Use permit (with no construction permit)$1,000.00Permit fee includes the following: 1 design revision (if applicable), property research and 1 consultation, issuance of use permit.
Minor Repair Over the Counter$550.00Permit fee includes the following: 1 record review and consultation, 1 final inspection, issuance of use permit.
Additional Inspections$250.00Fee is used for reinspection’s when initial work inspected was not approved
Variance$500.00Fee includes consultation, 1 design/proposal review and 1 Board of Health meeting
Permit renewal$250.00Fee includes renewals with no design changes and renewed prior to expiration
Cleaner license$100.00new and annual renewal
Installer license$100.00new and annual renewal
Engineer registration fee$100.00one time registration fee
Inspector license$100.00new and annual renewal
Additional Design Revision fee$250.00Fee is used for design revisions required in excess of the one included in permit fees for designs already permitted and requesting significant changes or when previous redesign was not approved
Hourly Rate$155.85Can be used for in-depth, preschedule consultation or other needs as BCPH deems appropriate
Regulation$0.35/pageFee is for requested copies of the BC OWTS regulations

New Construction Permits

  • For properties that have never been developed.

Major Repair Permits Associated with Property Improvements

  • This permit type is used when upgrading a system as a result of work done to a property under previous, current, or future Building Permits (BPs) or another Community Planning & Permitting (CPP) process. Examples include, but are not limited to, rebuilding or adding a dwelling, adding bedrooms, or finishing a basement.

Major Repair Permits

  • Soil treatment area (STA) repair or replacement for aging or failing systems.
  • Replacement of an unapproved or undocumented system with no other property improvements.
  • Vault or vault privy replacement.
  • Change in Use Policy when construction is needed.
    • See above if construction is required due to previous, current, or future BPs or another CP&P process. If only structure connections and sewer line are needed, see below.
    • See below if construction is needed to replace or install additional tankage for accessory structures.

Minor Repair Permits

  • Septic tank replacement.
  • Septic tank installation when adding additional tankage to an existing OWTS.
  • Lift station replacement.
  • Effluent line repair, replacement, or reconfiguration.
  • Sewer line reconfiguration, relocation, or verification.
  • Sewer line replacement for an existing section that connects to the tank, house, or both.*
  • Change in Use Policy when minor construction is needed.
    • When only structure connections and sewer line are needed.
    • When replacement or installation of additional septic tanks for accessory structures is needed.

Minor Repair Over-the-Counter Permits

  • Distribution box, automatic diverter valve (ADV), or diverter valve replacement.

Use Permits

  • Operation and maintenance tracking.
  • Vacation Rental Licensing.
  • Change in Use when no construction is needed
    • For accepted affidavits, only a renewal is required.

Cases where no permit is required

  • Repair or replacement of risers, baffles, inlet/outlet tees.
  • Pump or Aerator replacement.
  • Sewer line replacement for a section that does not connect to the house or tank.
  • *A permit is REQUIRED if the sewer line replacement is connected to the tank or house (see Minor Repair).

Change in Use for Property

Properties being converted for a new use must comply with the Change in Use policy. Examples include:

  • Adding bedrooms
  • Connecting an Accessory Dwelling (ADU) or structures
  • Remodeling
  • Changing to a vacation rental
  • Changing to non-residential use
  • Changing occupants, tenants, and/or ownership for commercial purposes, etc.

OWTS Change in Use Policy

Marshall Fire and Onsite Wastewater Treatment Systems (OWTS)

For existing owners, permit fees will be waived for house connections and sewer lines. The standard fee schedule will apply to new owners and any other OWTS work. If the OWTS work qualifies for a waived permit fee, you cannot apply online and will need to submit the application by mail or drop it off at 3450 Broadway, Boulder, CO 80304.

Marshall Fire: Onsite Wastewater Treatment Systems (OWTS)

Onsite Wastewater Treatment System (OWTS) Sliding Fee Scale

Households may be eligible for an adjusted OWTS Permit fee based on U.S. Dept of Housing and Urban Development (HUD) maximum qualifying incomes. If you need more information, please email healthOWS@bouldercounty.gov.

Water and Waste Disposal Loan and Grant Program in Colorado

The Water & Waste Disposal Loan and Grant Program in Colorado provides funding for clean and reliable drinking water systems, sanitary sewage disposal, sanitary solid waste disposal, and storm water drainage to households and businesses in eligible rural areas.

Single Family Housing Repair Loans and Grants in Colorado

Section 504 Home Repair program provides loans to very-low-income homeowners to repair, improve or modernize their homes or grants to elderly very-low-income homeowners to remove health and safety hazards. Learn more about the Single Family Housing Repair Loans and Grants in Colorado Program.

In 2020, the Colorado legislature amended the Onsite Wastewater Treatment System (OWTS) Act to remove the longstanding cap limiting the total amount that local public health agencies could charge for OWTS permit fees. This is the second fee increase Boulder County Public Health has implemented since the revision of this Act.

Boulder County Public Health (BCPH) was allocated a general budget to offset the cost of OWTS permits for many years but have recently received direction from the Board of County Commissioners and Board of Health to amend permit fees to accurately cover program costs. These fee changes were calculated to cover staff time spent per application type. BCPH staff will continue to track time and review the fees based on annual data. If changes are needed, staff will advise the Board of Health and request approval for changes as applicable.

Major Repair Permit Changes

In mid-2024, a new category for Major Repair Permits will become effective.

We are separating major repair permits into two categories: one category for replacing aging or failing OWTS, and the second category for systems associated with simultaneous property improvements. The first category was developed in effort to lower permit costs for failing or aging systems. The second category will have a higher fee reflective of the increased need for redesigns and additional consultation time with BCPH staff. This new major repair permit will allow for up to one hour of BCPH consultation time and up to two design revisions.

New OWTS Construction Permit Fee

The increased fee to this permit type will allow for up to one hour of BCPH consultation time and up to two design revisions.

Property Transfer Fee Increase

We recognize the fee for property transfer certificates is a significant increase. This program requires significant staff time to answer questions for real estate professionals, potential buyers, and sellers. Previous fees have not covered the cost of this program. We will continue to monitor and track staff time associated with this program to ensure the fee is accurate.

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