490 SeaTac, 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 
Economy Septic Service (253) 852-1099
WA, 98031
6 miles from SeaTac
WA, 98366
15 miles from SeaTac
Evergreen Sanitation (425) 228-0660
WA, 98003
8 miles from SeaTac
D & R Excavating Inc (206) 463-3457
WA, 98070
8 miles from SeaTac
Alberta Septic Systems (425) 271-6524
WA, 98059
9 miles from SeaTac
WA, 98070
9 miles from SeaTac
Niece Pumping Service (206) 463-5969
WA, 98070
9 miles from SeaTac
WA, 98070
9 miles from SeaTac
CLEAN SEPTIC PUMPING LLC (253) 218-3019
WA, 98001
10 miles from SeaTac
WA, 98370
27 miles from SeaTac
BAIMA ENTERPRISES (425) 643-3734
WA, 98006
11 miles from SeaTac
Final Vision Inc. (360) 801-5681
WA, 98528
30 miles from SeaTac
G & N Septic Tank Service (253) 838-1028
WA, 98002
11 miles from SeaTac
AL & ART'S SEPTIC SERVICE (253) 846-6664
WA, 98093
11 miles from SeaTac
WA, 98166
12 miles from SeaTac
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If you are building a SeaTac, 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 SeaTac, 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 SeaTac, 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 SeaTac, WA residential septic tank and system experts and installers. Read through professional profiles for information on licensing, qualifications and experience.
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