Official-source review: August 24, 2026
Missouri septic installer license: Missouri requires individuals who install, repair or materially modify onsite wastewater systems to register with DHSS. Basic installers complete the state course and examination; Advanced installers first hold Basic registration in good standing and complete additional training.
What the Missouri septic installer license covers
Missouri requires individuals who install, repair or materially modify onsite wastewater systems to register with DHSS. Basic installers complete the state course and examination; Advanced installers first hold Basic registration in good standing and complete additional training.
- Onsite wastewater treatment installation within Basic or Advanced registration.
- Work only within the authority issued.
- Obtain every project permit and inspection.
Compare related occupations and states in the License Finder.
Missouri septic installer license requirements at a glance
| Requirement | Current rule or route |
|---|---|
| Route | DHSS Basic or Advanced OWTS Installer registration plus local onsite permit |
| Experience | Complete Basic registration before seeking Advanced installer status. |
| Exam | Pass the examination at the end of the required installer course. |
| Fees | Course registration, professional registration, continuing education, local permit and inspection fees apply. |
| Insurance or bond | Maintain required business, liability, bond, workers compensation and project coverage. |
| Renewal | Renew the DHSS professional registration and local approvals as required. |
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 Missouri septic installer license process
- Classify the work and jurisdiction.
- Complete education and experience.
- Apply and pass required examinations.
- Register the business and provide insurance or bond.
- Obtain permits and inspections.
- Renew credentials and retain 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 Missouri rules and boundaries
- State and local credentials may overlap.
- Business and individual credentials are separate.
- Licensing does not replace permits.
- The responsible authority makes the final decision.
Missouri 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.
Missouri septic installer license cost and renewal
Budget separately for training, exams, applications, insurance, business filings and permits.
Renew each state and local credential separately and verify current fees.
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.
Missouri 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 the credential is statewide, optional statewide or local; permits and inspections remain separate.
Is an exam required?
Pass the examination at the end of the required installer course.
When does it renew?
Renew the DHSS professional registration and local approvals as required.
Are permits separate?
Yes.
Official sources used
Verified licensing details
- Jurisdiction
- state credential or local contractor license, depending on scope
- Licensing authority
- Missouri Department of Health and Senior Services, Onsite Wastewater Treatment Program
- Fees
- Course registration, professional registration, continuing education, local permit and inspection fees apply.
- Experience
- Complete Basic registration before seeking Advanced installer status.
- Exams
- Pass the examination at the end of the required installer course.
- Insurance or bond
- Maintain required business, liability, bond, workers compensation and project coverage.
- Continuing education
- Complete DHSS-approved training and continuing education for renewal.
- Renewal period
- Renew the DHSS professional registration and local approvals as required.
Official sources
Official sources last checked August 23, 2026.
Requirements can change and local rules may apply. Confirm the current requirements with the official authority before paying a fee or beginning work.