709 Londonderry, NH Septic Tanks and Systems

Is the grass always greener over the septic tank? You might want to ask your New Hampshire septic tanks and systems expert. More 
Chivers Excavation (603) 437-7300
Derry, NH, US 03038
3 miles from Londonderry
Hamm Septic Services Inc (603) 882-7223
Hudson, NH, US 03051
4 miles from Londonderry
Londonderry, NH, US 03053
Londonderry, NH, US 03053
Nesenkeag Inc (603) 882-3726
Litchfield, NH, US 03052
5 miles from Londonderry
Hamm Septic Services Inc (603) 434-7701
Derry, NH, US 03038
6 miles from Londonderry
Parkview Consulting Inc (603) 537-0300
Derry, NH, US 03038
6 miles from Londonderry
Manchester, NH, US 03104
10 miles from Londonderry
A Bee Septic (603) 424-0022
Merrimack, NH, US 03054
6 miles from Londonderry
Hudson, NH, US 03051
7 miles from Londonderry
Windham, NH, US 03087
7 miles from Londonderry
Merrimack, NH, US 03054
7 miles from Londonderry
Windham, NH, US 03087
7 miles from Londonderry
Bkb Excavation (603) 765-9098
Manchester, NH, US 03109
8 miles from Londonderry
BLAISDELL SURVEY LLC (603) 494-8420
Merrimack, NH, US 03054
8 miles from Londonderry
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If you are building a Londonderry, NH home that isn’t near a sewer system hookup, you’ll want to hire an excavation company that specializes in septic system design and installation. You can find more septic tanks & systems in Manchester, Lowell, Nashua, Lawrence and Haverhill.

How Do Septic Tank Systems Work?


A large concrete or steel septic tank can hold up to 1,000 gallons of water. Wastewater comes down into the tank on one side from your Londonderry, NH home’s sewage pipes and leaves the tank on the other side. Gases go up through a vent pipe through the roof of the house. Wastewater flows out of the septic tank and into a drain field made of perforated pipes, deeply buried and covered in gravel-filled trenches.

The drain field tends to be about 6 feet deep and 2 feet wide. Ultimately, the size of the drain field depends on how well the soil absorbs water, with slow-absorbing soil requiring a larger drain field. About 3 feet of gravel covers the drain pipes, with dirt filling the remainder.

Installing a septic tank system is best left to a licensed advanced wastewater treatment system installer, who can anticipate what size drain field your Londonderry, NH system will need. Whether you’re working on a new build or a remodel, make sure your septic expert and installer openly communicates with your contractor or builder. Here are some related professionals and vendors to complement the work of septic tanks & systems: General Contractors, Plumbing Contractors.

Find septic tank and system professionals on Houzz. Narrow your search in the Professionals section of the website to Londonderry, NH residential septic tank and system experts and installers. Read through professional profiles for information on licensing, qualifications and experience.
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