493 Mercer Island, WA Septic Tanks and Systems

Is the grass always greener over the septic tank? You might want to ask your Washington septic tanks and systems expert. More 
Evergreen Sanitation (425) 451-1983
WA, 98004
4 miles from Mercer Island
Evergreen Sanitation (425) 440-3561
WA, 98004
4 miles from Mercer Island
Alberta Septic Systems (425) 271-6524
WA, 98059
5 miles from Mercer Island
BAIMA ENTERPRISES (425) 643-3734
WA, 98006
3 miles from Mercer Island
Economy Septic Service (425) 453-6197
WA, 98004
4 miles from Mercer Island
WA, 98008
6 miles from Mercer Island
WA, 98166
6 miles from Mercer Island
WA, 98101
6 miles from Mercer Island
Evergreen Sanitation (206) 362-6998
WA, 98101
6 miles from Mercer Island
WA, 98101
6 miles from Mercer Island
Evergreen Sanitation (206) 362-6998
WA, 98101
6 miles from Mercer Island
EVERGREEN SANITATION (206) 774-9469
WA, 98101
6 miles from Mercer Island
Economy Septic Service (206) 248-2213
WA, 98101
6 miles from Mercer Island
Collier Plumber Inc (206) 246-5325
WA, 98102
7 miles from Mercer Island
WA, 98032
14 miles from Mercer Island
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If you are building a Mercer Island, WA 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.

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 Mercer Island, WA 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 Mercer Island, WA 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.

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