Missouri Septic Contractor License Requirements (2026)
By Gabriel Giner, Editor · Source checked 2026-09-30
Missouri registers Basic and Advanced onsite wastewater installers through DHSS. The Basic course precedes the Advanced course, although the Department allows them to be taken consecutively when scheduled. Registration is distinct from onsite soil evaluation or real-estate inspection licensing. The installer must also follow the appropriate state or local construction-permit process for each system.
Regulatory Body
Missouri Department of Health and Senior Services administers and enforces this credential. Use the cited agency guidance for the named installer pathway and the authority responsible for each project.
- Official portal: https://health.mo.gov/business-professionals/onsite-wastewater-treatment/become-registeredlicensed
Eligibility Requirements
Applicants must be at least 18 years old. Check the current application for identification and tax-number requirements. Use the current application for identification and address requirements; out-of-state work history does not itself authorize work here.
Good moral character
Complete the disclosures required by the applicable application. No additional character standard is inferred from a permit or program summary.
Background investigation
Confirm any applicant screening with the issuing authority. The cited sources are not used to infer an unlisted fingerprint requirement.
Experience and Education
Applicants must be at least 18. Attend the three-day Basic course and pass the examination. The published $300 course charge includes the $90 registration-processing amount. The Advanced course follows Basic and costs an additional $200.
Accepted proof of experience or eligibility
- Current application for the credential or local authorization described above.
- Supporting qualification records required by that application; retain approvals for the actual work scope.
Exam Requirements
Testing provider or authority: Missouri Department of Health and Senior Services. The following examination requirements cover the pathways described in this guide; follow each part's classification, waiver, and local-scope conditions. Unpublished format details do not remove an examination requirement:
- Basic / Advanced onsite wastewater installer registration examination — question count: confirm with the authority, timing: confirm with the authority, passing score: confirm in the current candidate bulletin
Examination fee: No complete current examination charge is established here; confirm the applicable assessment and provider.
Complete the installer course examination for the route sought. Advanced applicants must first complete Basic; booking both courses does not waive that sequence.
Insurance and Bonds
No single applicable bond amount is established in this guide. Confirm the business, credential, and project requirements; an unspecified amount is not a bond exemption.
General liability
Confirm the current insurance documentation and coverage required for the actual credential, employer, and locality. No unverified coverage minimum is quoted here.
Workers' compensation
Confirm employee coverage obligations separately; the septic program sources do not establish a workers’ compensation exemption.
Fee Schedule
The $90 registration-processing component is included in the $300 Basic course price. Budget $300 for that package, not $390. Advanced training adds $200.
| Fee | Amount |
|---|---|
| Application | $90 |
| Initial license | No separate charge for this pathway |
| Renewal (every 3 years) | $90 |
$300 Basic course and registration package; another $200 for the Advanced course. Other business and project costs are separate.
To turn these board fees into a realistic year-one budget — bond premium, liability insurance, and exam prep included — open the cost calculator preloaded for Missouri septic contractor.
Renewal and Continuing Education
Registration renews every three years with a $90 processing fee. DHSS identifies 20 CE hours, including 8 meeting selected criteria, for the first renewal. Consult the current CE instructions for later renewals. Renewal more than 45 days after expiration requires repeating the initial process.
Continuing education: First renewal: 20 approved CE hours, including 8 meeting selected criteria. Check DHSS for later-renewal requirements.
Downloadable Asset
2026 Missouri Septic Contractor License Roadmap (PDF) — a printable step-by-step checklist for the application process.
Download the PDF roadmap →Reciprocity
Out-of-state credentials must be considered under the septic program’s own rules. The pathways documented below do not establish NASCLA examination credit.
| Reciprocal State | Accepted Exam | Conditions |
|---|---|---|
| No formal bilateral reciprocity agreements identified. | ||
Do not assume an outside installer credential transfers automatically. Ask the issuing authority to evaluate it under the named pathway; any credit or exemption must be confirmed before relying on it.
Weighing more than one jurisdiction? The national hub compares published Septic Contractor license requirements by state — exam, bond, fee, and experience thresholds side by side.
Septic Contractor Licensing in Neighboring States
Contractors working near a state line, or weighing where to qualify first, should compare Missouri's requirements against the bordering jurisdictions before committing to an application:
- Arkansas Septic Contractor License Requirements — Onsite wastewater installer registration
- Illinois Septic Contractor License Requirements — Private sewage disposal system installation contractor
- Iowa Septic Contractor License Requirements — County private-sewage approvals
- Kansas Septic Contractor License Requirements — Local septic installer licensing
- Kentucky Septic Contractor License Requirements — Certified onsite sewage disposal system installer
- Nebraska Septic Contractor License Requirements — Journeyman / Master onsite installer certification
- Oklahoma Septic Contractor License Requirements — Installer-in-training / certified installer
- Tennessee Septic Contractor License Requirements — Septic system installer permit
Step-by-Step Application Roadmap
- Identify the applicable installer pathway. Do not charge the $90 processing amount twice: DHSS includes it in the published $300 Basic course price.
- Prepare the qualification records. Applicants must be at least 18. Attend the three-day Basic course and pass the examination. The published $300 course charge includes the $90 registration-processing amount. The Advanced course follows Basic and costs an additional $200.
- Complete the applicable assessment and filing. Complete the installer course examination for the route sought. Advanced applicants must first complete Basic; booking both courses does not waive that sequence.
- Obtain the project approvals. Identify the permitting authority for the property, secure the required approved plans and construction authorization, and arrange inspections before covering the work. Keep the occupational credential separate from the site approval.
- Track the applicable renewal requirements. Registration renews every three years with a $90 processing fee. DHSS identifies 20 CE hours, including 8 meeting selected criteria, for the first renewal. Consult the current CE instructions for later renewals. Renewal more than 45 days after expiration requires repeating the initial process.
Application Checklist
Have each of the following squared away before the packet goes to Missouri Department of Health and Senior Services:
Progress is saved in this browser, so you can return to this checklist while your application is in flight.
Common Filing Mistakes
The errors below are the ones that most frequently cost Missouri Septic Contractor applicants time, drawn from the cited board guidance.
Using a different credential’s authority
Do not charge the $90 processing amount twice: DHSS includes it in the published $300 Basic course price.
Treating a credential as a site approval
Confirm the property’s construction authorization and inspection sequence with its permitting authority before installation.
Confusing a partial charge with the complete budget
The $90 registration-processing component is included in the $300 Basic course price. Budget $300 for that package, not $390. Advanced training adds $200.
Study and Reference Materials
The following references are cited by the regulator, used in the application process, or commonly used to prepare for the trade scope. Listed for reader convenience; CLR receives no compensation for these recommendations.
- Missouri Department of Health and Senior Services — Register — Missouri Department of Health and Senior Services. Official reference linked in Primary Sources; use the current application or rules for the selected scope.
- Missouri Department of Health and Senior Services — Courses — Missouri Department of Health and Senior Services. Official reference linked in Primary Sources; use the current application or rules for the selected scope.
Other Missouri Trade Licenses
For a different Missouri credential, see these companion guides published by CLR:
- Missouri General Contractor License Requirements
- Missouri Electrician License Requirements
- Missouri Plumber License Requirements
- Missouri HVAC Technician License Requirements
- Missouri Roofing Contractor License Requirements
- Missouri Painting Contractor License Requirements
- Missouri Landscaping Contractor License Requirements
- Missouri Masonry Contractor License Requirements
- Missouri Concrete Contractor License Requirements
- Missouri Carpentry Contractor License Requirements
- Missouri Solar Installer License Requirements
- Missouri Low-Voltage Technician License Requirements
- Missouri Fire Sprinkler Contractor License Requirements
- Missouri Home Inspector License Requirements
- Missouri Pool Contractor License Requirements
- Missouri Handyman License Requirements
- Missouri Pest Control License Requirements
Frequently Asked Questions
Which septic installation pathway applies in Missouri?
Missouri registers Basic and Advanced onsite wastewater installers through DHSS. The Basic course precedes the Advanced course, although the Department allows them to be taken consecutively when scheduled. Registration is distinct from onsite soil evaluation or real-estate inspection licensing. The installer must also follow the appropriate state or local construction-permit process for each system.
What qualifications should an applicant prepare?
Applicants must be at least 18. Attend the three-day Basic course and pass the examination. The published $300 course charge includes the $90 registration-processing amount. The Advanced course follows Basic and costs an additional $200.
Which related credentials should not be confused?
Do not charge the $90 processing amount twice: DHSS includes it in the published $300 Basic course price.
What needs to be renewed?
Registration renews every three years with a $90 processing fee. DHSS identifies 20 CE hours, including 8 meeting selected criteria, for the first renewal. Consult the current CE instructions for later renewals. Renewal more than 45 days after expiration requires repeating the initial process.
Primary Sources
Regulatory requirements on this page are drawn from the official board, statute, and exam-provider materials listed below.
- Missouri Department of Health and Senior Services — Register
- Missouri Department of Health and Senior Services — Courses
- DHSS — continuing education and renewal
- Missouri Secretary of State — current onsite wastewater rules
Verified 2026-09-30 · Next scheduled review 2026-12-29
Report a correction to this guide
Corrections and presentation updates
- : Corrected examination detection when format details are unpublished and updated the summary layout and requirements score. Source-check dates are unchanged.
- : Shared template updated to distinguish unspecified eligibility requirements, retain cost qualifications, and use consistent headings. Source-check dates are unchanged by presentation updates.
- : Local-only guides now use a compliance-focused structure and terminology instead of implying a statewide license application. Source-check dates are unchanged by this presentation update.