Welcome to Bonser & Son

Does your septic system need replacement? Your septic system replacement could qualify under the in kind replacement rule. You might not need a new septic system design.

Bonser & Son installs all types of septic systems and will fix any problems. If you have a failing septic system or have a question don't hesitate to call:

679-2036 or email:

How Your Failed System Is Repaired

First we will determine why your system failed. If your sewer system is state approved and has lasted 15 to 30 years the best way to fix your failed system is to remove the old leach field by digging it up and replacing it with the same size and type of system. But if your system fails in 5 to 10 years or less then replacing it will the same size and type of system would not be the best solution. Sometimes a new design for a different size or type of system is more cost effective in the long run. There are a lot of different systems on the market, however if you have the room on your property, it is this installer’s opinion that the traditional stone and pipe system is still one of the best. If you need a smaller system because of space restrictions a chambered system, preferably cement, is always a great choice.

We always look at each system and land individually to determine the best equipment and approach to use to minimize as much disruption to your lot as possible. We also look at your system and location so that our price estimate is accurate and complete with no surprises, as follows:

Serving: Dover NH, Rochester NH, Nottingham NH, Barrington NH, Lee NH, Epping NH, Raymond NH, Deerfield NH, Northwood NH, Madbury NH, Newmarket NH, Newfields NH, Exeter NH, Durham NH, Brentwood NH, Fremont NH, Stratham NH, Somersworth NH, Greenland NH, Candia NH, Auburn NH

1. Determine the exact location of your system.

2. Remove and store your existing loam.

3. Remove and haul away for disposal approximately 8" of dirt above the stone.

4. Remove and haul away for disposal approximately 12” of stone and separating and disposal of the old perforated pipe.

5. Remove and haul away for disposal approximately 12” of dirt under the stone to get a good clean base.

6. Haul in and level approx 12” of washed sand. Washed sand is the best sand to use it does not have any fine particle to plug up and will keep your system working longer. Washed sand is more expensive but the extra expense is well worth it.

7. Haul in and level 12” of clean 1 1/2" inch stone.

8. Lay out and install 4 inch perforated pipe and distribution box.

9. Level top of stone and install a filter fabric to prevent the sand above the stone from mixing into the stone.

10. Cover the filter fabric and stone with approximately 8” inches of clean sand.

11. Place existing loam and and any additional loam to approximately 4" thick.

12. Level and clean up. Fill out all necessary forms after completion.