518 Seattle, 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) 440-3561
Bellevue, WA, 98004
6 miles from Seattle
Evergreen Sanitation (425) 451-1983
Bellevue, WA, 98004
6 miles from Seattle
KLEIN SEPTIC SERVICE (425) 256-3035
Bellevue, WA, 98004
6 miles from Seattle
Port Orchard, WA, 98366
13 miles from Seattle
Arlington, WA, 98223
42 miles from Seattle
Family owned and operated septic pumping and repair company. Read More
Seattle, WA, 98125
Kent, WA, 98032
17 miles from Seattle
Poulsbo, WA, 98370
18 miles from Seattle
LAKESIDE SEPTIC (425) 822-2421
Kirkland, WA, 98083
9 miles from Seattle
Kirkland, WA, 98033
9 miles from Seattle
BAIMA ENTERPRISES (425) 643-3734
Bellevue, WA, 98006
9 miles from Seattle
Bainbridge Island, WA, 98110
10 miles from Seattle
Alberta Septic Systems (425) 271-6524
Newcastle, WA, 98059
10 miles from Seattle
Evergreen Sanitation (206) 774-4622
Seattle, WA, 98110
ALLCOUNTY OPERATIONS INC (206) 866-7747
Bainbridge Island, WA, 98110
10 miles from Seattle
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If you are building a Seattle, 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. You can find more septic tanks & systems in Bellevue, Renton, Shoreline, Redmond and Kirkland.

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 Seattle, 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 Seattle, 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. 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 Seattle, WA residential septic tank and system experts and installers. Read through professional profiles for information on licensing, qualifications and experience.
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