Septic records › Washington › Maple Valley

Septic Records and Services in Maple Valley, Washington

Maple Valley is in King County, Washington. We hold 184,607 septic records for King County, Washington. Of the parcels classified in King, 84,437 are on septic — a county figure, not specific to Maple Valley. 11 septic businesses on record with a Maple Valley address, below.

Free septic design for a property here. Generate a code-referenced septic design from the parcel: design flow from bedroom count, tank sizing, soil-driven drainfield area, dispersal method and setbacks. Free to generate and view. Start a design

septic businesses here

184,607

county records held

84,437

county parcels on septic

100%

county docs text-searchable

Where King County, Washington septic records are kept

King County, Washington publishes onsite-wastewater records. Records can be searched without an account.

County records portal

Septic companies in Maple Valley, Washington

11 businesses we have on record with a Maple Valley address: pumping, installation, design, inspection and repair. Not an endorsement, and we take no fee.

Company	Phone	Rating	Services
Puget Sound Septic	(425) 806-9009	5.0 (2)	septic services
Stuth Company Inc	(425) 255-3546	4.7 (15)	plumbing; septic services
Lilly's Septic Service	(425) 432-3084	3.3 (23)	septic services
A Team Septic Solutions	(206) 491-9049	—	oo
Aqua Test Inc	(425) 432-9360	—	installer
Aqua Test, Inc	(425) 432-9360	—	installer
Puget Sound Septic DBA Yuk Truck	(425) 806-9009	—	oo
Puget Sound Septic LLC	(425) 806-9009	—	oo
Salish Sea Marine LLC (Royal Restrooms)	(206) 816-5406	—	pumper
Sound	(425) 806-9009	—	pumper
Stuth Company, Inc	(425) 255-3546	—	oo

Before calling any of them, pull the property's recorded as-built if one exists. It gives tank size, lid location and drainfield layout, which is the difference between a quoted job and an hourly dig.

Listing here is not an endorsement. We take no fee from any company on this page, we are not affiliated with them, and being listed does not mean the business is a customer of ours. Fields shown are limited to what we actually hold: no street address, hours or license numbers are shown unless we hold them, and none are invented.

Local septic work: pumping, installation, design, inspection, repair

Pumping. A pumper needs the lid location and tank capacity. Locating a buried lid without the recorded as-built is billed as labor.
Installation. A permit before work starts, an inspection while the system is open, and a final as-built submitted at completion, which is what ends up in the county file.
Design. Design flow from bedroom count, a soil and site evaluation, tank sizing and the required setbacks. On a lot with an existing permit, the original soil work is often already on file.
Inspection. Lenders and many counties require one at sale or transfer. Inspectors start from the recorded as-built; without it they are probing blind.
Repair. Starts from the existing as-built, since the current tank, field and any reserve area constrain what can be rebuilt.

Look up a specific property

Our map shows each parcel as septic, sewer, or unclassified, with the records we hold attached to the parcel.

Open the parcel map

Common questions

Is there septic data specific to Maple Valley, or just King County?

We hold county-level septic and sewer classification, not a per-city breakdown. The figures on this page for King County, Washington are county totals, clearly labelled as such, not an estimate for Maple Valley alone.

How many septic companies serve Maple Valley?

11 businesses on record with a Maple Valley address in our directory: pumping, installation, design, inspection and repair.

Can I get a septic design for free?

Yes. You can generate and view a code-referenced septic design for a parcel at no cost: design flow from bedroom count, tank sizing, soil-driven drainfield area, dispersal method and setbacks.

Where are septic records for Maple Valley kept?

Records for properties in Maple Valley are held by King County, Washington.

Figures on this page were last verified 2026-08-31.