- Plan for a trade exam.
- Renew with the $150 certification fee, proof of insurance and continuing education hours. Applications after June 30 pay a late fee of half the certificate fee.
Do you need a state license in Mississippi?
Mississippi licenses septic system work at the state level through the Mississippi State Department of Health, Division of On-site Wastewater. Below is what the board asks for, in the order you will run into it.
Steps to get licensed in Mississippi
- Send Form 347 with the $162.50 fee.
- Attend the 2 day training course and pass the exam.
- Send proof of general business liability insurance and the $150 certification fee.
- Renew on time with continuing education hours.
Experience and other requirements
Experience. The official pages we read do not say. Check with the board (official site).
The license to apply for. Certified Installer.
Mississippi septic installer exams
Trade exam. The department's 2 day training course with an exam.
Business and law exam. The official pages we read do not say. Check with the board (official site).
What it costs in Mississippi
The board lists 2 fees along the way. These are the state's own numbers. Insurance, any bond, exam prep and your business registration come on top.
| Fee | Amount |
|---|---|
| New application (exam fee plus study material) | $162.50 |
| Certification fee | $150 |
Insurance and bond
Insurance. General business liability insurance of $50,000 per occurrence and at least $100,000 aggregate.
Bond. The official pages we read do not say. Check with the board (official site).
Renewal and licenses from other states
Renewal. Renew with the $150 certification fee, proof of insurance and continuing education hours. Applications after June 30 pay a late fee of half the certificate fee.
Reciprocity. The official pages we read do not say. Check with the board (official site).
After you are licensed
The license lets you take the work. Getting the work is the next job.
- Register the business. If you work under a name other than your own, register it where your state asks (often the Secretary of State, sometimes the county), and keep the name the same on your license, your truck and your invoices.
- Claim your Google Business Profile. It is the listing people see when they search for septic installation near them. Fill in your service area, hours and real photos of your work.
- Put up a website that shows the license. Customers look for it before they call. Koira builds a contractor website for you and keeps it current.
- See where you stand. The free Koira report checks how your business shows up in search and on maps against shops near you.
Where this comes from
Every fact on this page comes from the Mississippi State Department of Health, Division of On-site Wastewater and the official pages below, checked October 9, 2026. Fees and rules change, so confirm with the board before you file.