Colorado Septic Installer License Requirements: Complete 2026 Guide

Official-source review: August 24, 2026

Colorado septic installer license: Colorado’s CDPHE establishes the statewide onsite wastewater framework, but systems with design capacity of 2,000 gallons per day or less are permitted by local public health agencies. Installer licensing, examinations, insurance and renewal therefore depend on the county.

What the Colorado septic installer license covers

Colorado’s CDPHE establishes the statewide onsite wastewater framework, but systems with design capacity of 2,000 gallons per day or less are permitted by local public health agencies. Installer licensing, examinations, insurance and renewal therefore depend on the county.

• Onsite wastewater installation and repair under the destination county’s credential and system permit.
• Work only within the credential issued.
• Obtain every local permit and inspection.

Compare related occupations and states in the License Finder.

Colorado septic installer license requirements at a glance

Do not treat this table as an approval notice. The agency, certification organization or local jurisdiction makes the final eligibility decision and may request additional evidence.

How to complete the Colorado septic installer license process

1. Identify the state and local credentials triggered by the work.
2. Complete required education and documented experience.
3. Obtain approval and pass each examination.
4. Submit applications, records and fees.
5. Complete insurance, business and permit requirements.
6. Renew on time and retain compliance records.

Keep copies of every experience certificate, examination result, bond or insurance filing and payment receipt. Names and business entities should match across the application and supporting documents.

Important Colorado rules and boundaries

• Small-system permitting is handled locally.
• A credential from one county may not transfer automatically.
• Engineered systems can require a qualified designer.
• Every site requires its own approval.

Colorado may separate the credential held by a worker from the contractor license held by the business, while preserving local authority over permits and inspections. Confirm every applicable layer before bidding, advertising or beginning regulated work.

Colorado septic installer license cost and renewal

Budget separately for applications, examinations, training, insurance, business filings and permits.

Renew each state and local credential separately and verify current charges before filing.

Government charges are only part of the expected cost. Training, examination preparation, fingerprints, surety premiums, insurance, equipment calibration and local permits can add to the total.

Colorado septic installer license checklist

• Confirm that this credential matches the exact work you will perform.
• Check whether the applicant is an individual, sole owner or separate business entity.
• Collect experience and training records before submitting the application.
• Use the current official form and fee schedule.
• Complete every required examination or approved certification route.
• File bonds, insurance and fingerprints when applicable.
• Check county, city, water supplier and building-permit rules.
• Save the expiration date and renewal requirements.

Frequently asked questions

Is this credential statewide?

The guide identifies whether authority is statewide or local; permits and inspections remain project-specific.

Is an exam required?

A county installer examination may be required; there is no single statewide installer exam.

When does it renew?

Renew the local credential on the county cycle.

Are local permits separate?

Yes.

Official sources used

• CDPHE OWTS