Common septic repairs
- Baffles and tees. Broken or missing baffles can let solids escape into the leach field.
- Inlet and outlet pipes. Cracked, crushed or root-filled pipes between the house, the tank and the distribution box.
- Distribution box. A tilted or damaged box can send most of the effluent to one part of the leach field.
- Pumps, floats and alarms. Systems with a pump chamber depend on working pumps and high-water alarms.
- Risers and covers. Bringing access to the surface makes pumping and inspections easier.
Leach field and full system replacement
The leach field (also called the soil absorption system) is where effluent from the tank soaks into the ground. Over time — and faster if the tank isn't pumped — the soil can clog. Signs include soggy ground, sewage odors, and backups that return soon after pumping.
Replacing a leach field or full system generally involves:
- Site evaluation. Soil testing, including a percolation test, to see how the ground drains and where groundwater sits.
- Design. A designer or engineer prepares a plan that meets Title 5 and any local rules.
- Permit. The Board of Health reviews and approves the plan.
- Installation. An installer permitted by the local Board of Health builds the system, with inspections along the way.
- Certificate of compliance. Issued when the work is approved. You'll need it to claim the state septic tax credit.
After a failed Title 5: in most instances the system must be repaired or upgraded within two years. Title 5 doesn't say whether the buyer or seller pays — that's negotiated. Getting a repair estimate early gives you something concrete to negotiate with.
Choosing a provider: we don't verify licenses. Ask any installer to confirm they are permitted to do septic work in Swansea, and confirm permits with the Board of Health.
Repair & replacement questions
Does a failed Title 5 always mean a new septic system?
No. A conditional pass means a specific component, such as a baffle, pipe or pump, must be fixed. A failure usually means upgrading the leach field or the whole system under a design approved by the Board of Health.
Is there financial help for septic repairs in Massachusetts?
Yes. For the 2025 tax year, Massachusetts offers a personal income tax credit of 60% of the cost of repairing or replacing a failed system on your principal residence, up to $18,000 total and $4,000 per year. Communities that join the state's Community Septic Management Program can also offer low-interest betterment loans, including 0% options based on income. Confirm current rules with a tax preparer, and ask the Swansea Board of Health whether the town participates.
How long does a septic replacement take?
It varies. Soil testing, design and Board of Health permitting often take the longest. Installation time depends on the site, weather and type of system. Ask providers for a timeline.
Wondering about price? See the Title 5 inspection and septic repair cost guide.