Do you need a state license in Maine?
Maine does not issue a statewide septic installer license. Any license you need comes from the city or county where the job is, so the rules can change from one town to the next.
The Local Plumbing Inspector in each town issues the permit and inspects the system.
The Maine license for this work
There is one license to aim for here.
| License | What it covers |
|---|---|
| Voluntary certified installer | Lets you do the bottom of the bed inspection on your own systems, if the Local Plumbing Inspector agrees |
How to get set up in Maine, step by step
- Install systems under permits from your town's Local Plumbing Inspector.
- For the voluntary certification, attend a Subsurface Wastewater Unit training session.
- Attend a Maine DEP erosion control course.
- Send the application with two HHE-200 forms for systems you installed.
Experience and other requirements
Experience. For the voluntary certification: two systems you installed that were permitted and inspected by the Local Plumbing Inspector.
What it costs in Maine
There is no state license fee for septic system work in Maine. Ask the city or county where you work about any local fees.
Good to know in Maine
- Septic system designers must be licensed by the state as Site Evaluators.
Once you are cleared to work
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 Maine CDC, Subsurface Wastewater Unit and the official pages below, checked October 9, 2026. Fees and rules change, so confirm with the board before you file.