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 are having septic trouble or have a question don't hesitate to call:


Call 679-2036 office or 502-5375 Cell

  • Free Cost Estimates
  • Repair broken sewer lines,
  • Replace or repair septic tanks
  • Install inlet or outlet baffles
  • Fix a damaged D-Box
  • Replace a failing leach field
  • Septic system Design
  • Stone and Pipe Septic System
  • Chamber Septic System
  • Enviro Septic System
  • Geo Flow Septic System
  • Eljen in Drains Septic System
  • Drainfield Inspection
  • NH Septic Designer License # 550
  • NH Septic Installer License # 1327
  • NH Certified Septic System Evaluator # 131
  • Located in Nottingham, New Hampshire.We have been designing, installing and fixing existing septic systems since 1980.

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  • We have the right size equipment to do the job correctly.
  • We use quality material and proper construction methods.
  • We give a realistic estimate so you know your total cost and an accurate time schedule for starting and completion of your system.
  • We are a small company, we keep our cost down and are able to pass those cost savings on to you.
  • Bonser & Sons is licensed by the State of New Hampshire for both designing (License #550) and installing septic systems (License #1327). You only have to hire just one company.
  • NH Septic Evaluator #131
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, Chichester NH