25 Hale True Road Rd Sandown, NH 03873
Phone: 603-670-5729
Email: John@nhexcavation.com


"John did what he said he would do in a timely fashion, very good price for the work. He was very good to come back, explained what he was doing, would make changes as needed, just very thorough in the work."

nh excavation and nh septic

Septic System FAQ

What is a septic system?


  • All the components use to convey or treat effluent (wastewater), including all methods used to distribute effluent into the EDA (Effluent disposal area).  Septic systems are considered to be on-site systems designed to safely dispose of biodegradable sanitary waste gray water.


How often should I have my septic tank pumped?


  • You should have your septic tank pumped every 2-4 years.


How can I tell if my system is failing?


  • Slow flushing
  • A gurgling sound
  • Over flow or sewage backup into the house
  • Strong odors of sewage outside
  • Septic sewage surfacing into the yard
  • Soggy or spongy feeling over the leach field


How long should a septic system last?


  • A conventional septic system should last approximately 30 years


How can I prolong the life of my septic system?


  • Pump the tank every 2-4 years
  • Conserve water usage
  • Don’t use a garbage disposal
  • Don’t use a lot of anti-bacterial products
  • Spread out laundry loads


Can I build over my leach field?


  • The use of motor vehicles, live stock, heavy equipment, or building on top of a leach field can compact soil and break sewer pipes.


What does it cost to replace a leach field?


  • Depending on the location and design, a residential leach field should cost between $6,500 and $13,000.