81 Spokane Valley, 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 
Spokane, WA, 99208
11 miles from Spokane Valley
Licensed Septic System Designer/Inspector Read More
Heads Up Sprinklers (509) 926-0917
WA, 99206
White Block Co Inc (509) 534-0651
WA, 99212
4 miles from Spokane Valley
White Block Company is a family owned manufacturing company. We offer concrete masonry units, retaining wall blocks, pavers, septic tanks, manholes, drywells, and other specialty... Read More
WA, 99216
WA, 99206
Sr Sicilia Inc (509) 466-2075
WA, 99217
4 miles from Spokane Valley
Faucets-N-Stuff (509) 924-8881
WA, 99206
GOBERS LLC (509) 924-5372
WA, 99206
Lilac City Septic Service (509) 891-8918
WA, 99016
Metro Engineering Inc (509) 624-9351
WA, 99202
6 miles from Spokane Valley
H & R Complete Inc. (509) 228-9955
WA, 99027
8 miles from Spokane Valley
Jay R Bonnett Engineering (509) 534-3929
WA, 99202
8 miles from Spokane Valley
Marshal Excavating LLC (509) 465-9036
WA, 99210
9 miles from Spokane Valley
Kalin Tom Excavation (509) 238-9469
WA, 99201
9 miles from Spokane Valley
Belsby Engineering (509) 747-6790
WA, 99201
10 miles from Spokane Valley
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If you are building a Spokane Valley, 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 Spokane Valley, 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 Spokane Valley, 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 Spokane Valley, WA residential septic tank and system experts and installers. Read through professional profiles for information on licensing, qualifications and experience.
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