Updated
Does Massachusetts require a septic license?
Massachusetts has no statewide septic installer license; septic contractors are licensed or registered locally. Massachusetts towns permit septic installers; the state certifies Title 5 inspectors and soil evaluators.
Who licenses septic contractors in Massachusetts?
Local boards of health (Title 5).
Massachusetts's septic credentials:
- Town installer permits
- State-certified Title 5 inspectors and soil evaluators
How to check a septic contractor's license in Massachusetts
- Massachusetts has no public statewide list of septic contractors.
- Ask the contractor for their local license or registration number and which county or town issued it.
- Call that county health department or town office to confirm it is current.
Septic permits in Massachusetts
A contractor license says who may do septic work; a permit authorizes a specific system. In Massachusetts, permits for new systems, replacements and most repairs come from the local health department or the state agency office that covers the property. Ask your installer to pull the permit and include the fee in the quote.
Licensed septic companies in Massachusetts
The Septic Guide lists 32 septic companies and licensed professionals in Massachusetts. This is what we could match as of October 2026, not an official count.
All septic companies in Massachusetts →
Massachusetts septic licensing: common questions
Do you need a license to install septic systems in Massachusetts?
Massachusetts has no statewide septic installer license; septic contractors are licensed or registered locally. Massachusetts towns permit septic installers; the state certifies Title 5 inspectors and soil evaluators.
Who issues septic licenses in Massachusetts?
Local boards of health (Title 5). Massachusetts towns permit septic installers; the state certifies Title 5 inspectors and soil evaluators.
How do I check a septic contractor's license in Massachusetts?
Massachusetts has no public statewide list of septic contractors. Ask the contractor for their local license or registration number and which county or town issued it. Call that county health department or town office to confirm it is current.
How many licensed septic contractors are in Massachusetts?
The Septic Guide lists 32 septic companies and licensed septic professionals in Massachusetts (data as of October 2026). This counts what we could match; it is not an official total.
Do you need a permit for a septic system in Massachusetts?
New septic systems, replacements and most repairs need a permit before work starts. The permit comes from the local health department or the state agency office that covers your property, and the permit, not the contractor license, is what authorizes a specific job.
Sources: Local boards of health (Title 5); state license lists loaded into The Septic Guide. See how we verify licenses.