Septic Companies in Washington — Licensed & Reviewed

Find trusted septic tank pumping, inspection, and installation contractors near you

Estimated Septic Households

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Inspection Requirement

County-Specific

Licensing Authority

Check with your county

Top Septic Companies in Washington

License Confirmed
10+ Years
5(17)

918 Central Ave S, Kent, WA 98032

ProfessionalEmergencyFull-ServiceInspection+1 more
License Confirmed
5(14)

46 Siwash Creek Rd, Tonasket, WA 98855

InspectionPumping
License Confirmed
Top Rated
5(24)

6104 Maxwelton Rd, Clinton, WA 98236

EmergencyInspectionPumping
License Confirmed
Top Rated
5(229)

20222 SE 245th St, Maple Valley, WA 98038

EmergencyFull-ServiceInspectionPumping
License Confirmed
Top Rated
5(29)

2367 Tacoma Ave S Suite 201, Tacoma, WA 98402

EmergencyFull-ServiceInspectionPumping

See all 111 septic companies in Washington

What to Know About Septic in Washington

Homeowners in Washington rely on septic systems for thousands of households across the state. The wet season can complicate drain field assessment — summer is the best time for service.

The EPA recommends pumping your septic tank every 3–5 years.

When choosing a septic contractor in Washington, verify their license with your local health department. Many counties in Washington require septic inspection at time of home sale — check with your local health department.

Septic Service Costs in Washington

ServiceTypical Cost Range
Routine Pumping$290 – $650
Septic Inspection$200 – $550
Drain Field Repair$1,000 – $7,000
Full System Replacement$3,600 – $15,000

Related Resources

Frequently Asked Questions

How much does septic pumping cost in Washington?

Septic pumping in Washington typically costs $325–$625. Prices are moderate, with slightly higher prices in the Seattle and Portland metro areas. Request quotes from multiple providers to compare.

How do I find a licensed septic company in Washington?

We list 111 septic companies in Washington. Each listing shows licensing status, ratings, and service offerings. Use our directory to compare providers and verify credentials before hiring.

When is the best time for septic service in Washington?

In Washington, the best time for routine septic maintenance is late summer or early fall (before the rainy season). The wet season can complicate drain field assessment — summer is the best time for service.

Find a Licensed Septic Company in Washington

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