Septic records and services in Seattle, Washington

In King County, Washington, which covers Seattle, we have measured 84,437 parcels on septic and 486,662 on sewer. That is a county measurement. We do not hold a septic count for Seattle on its own and this page does not estimate one.

What Seattle is, in the records

Seattle is a city in King County, Washington. The Census Bureau puts its internal point at 47.619335, -122.351538 and its land area at 84.00 square miles. Septic permitting and record keeping happen at the county level, not the city level, which is why every figure below is attributed to the county and linked back to the county page it came from.

What we hold for the county that covers Seattle

King County, Washington is one of the more heavily documented counties in our collection: we hold 184,607 septic records for it, so the odds that a specific Seattle address already has a filed document we can point you at are good. The county is predominantly sewered: only 84,437 of 571,099 classified parcels are on septic. Septic properties near Seattle are the exception, which is exactly why owners often do not know they have one. The county publishes a records portal that we were able to search without creating an account, which makes checking a specific parcel something you can do yourself in a few minutes.

Start from who you are

Septic is one subject with very different jobs inside it. These go straight to the page that does yours.

Businesses on record for septic work near Seattle

These are real businesses we hold an address for, not a ranked or paid list. We take no fee and list nobody preferentially. Confirm current licensing with your county or state before hiring.

With an address in Seattle itself

Questions people ask

Does Parcel Perfect have a septic count for Seattle?

No. We measure septic and sewer at parcel level and roll it up by county. In King County, Washington, which covers Seattle, we have measured 84,437 parcels on septic and 486,662 on sewer. That is a county measurement. We do not hold a septic count for Seattle on its own and this page does not estimate one.

Which county is Seattle in?

Seattle is in King County, Washington.

Records and services around Seattle

Other septic questions about Seattle

• Septic records in Seattle
• Septic pumping in Seattle
• Septic installation in Seattle
• Septic design in Seattle
• Septic inspection in Seattle
• Drainfield in Seattle
• Buying or selling in Seattle
• Septic repair in Seattle

• King County septic records — what we hold, and where the county keeps the originals
• Septic companies in Seattle
• Washington septic regulations — the rules that actually bind here, which no page on this site restates from memory
• Washington septic records index

ZIP codes that overlap Seattle

From the Census ZCTA-to-place relationship file, with the share of Seattle’s land area that falls in each. A ZIP is not a place boundary and the two only ever partly agree, which is exactly why both pages exist.

• ZIP 98115 (8% of the city)
• ZIP 98118 (7% of the city)
• ZIP 98108 (7% of the city)
• ZIP 98125 (6% of the city)
• ZIP 98106 (6% of the city)
• ZIP 98103 (5% of the city)
• ZIP 98199 (5% of the city)
• ZIP 98117 (5% of the city)
• ZIP 98105 (5% of the city)
• ZIP 98144 (4% of the city)
• ZIP 98134 (4% of the city)
• ZIP 98112 (4% of the city)
• ZIP 98126 (4% of the city)
• ZIP 98116 (4% of the city)
• ZIP 98133 (4% of the city)
• ZIP 98119 (3% of the city)
• ZIP 98122 (3% of the city)
• ZIP 98136 (3% of the city)
• ZIP 98177 (3% of the city)
• ZIP 98107 (3% of the city)
• ZIP 98109 (2% of the city)
• ZIP 98102 (2% of the city)
• ZIP 98178 (1% of the city)
• ZIP 98104 (1% of the city)
• ZIP 98146 (1% of the city)
• ZIP 98101 (1% of the city)
• ZIP 98121 (1% of the city)
• ZIP 98195 (0% of the city)
• ZIP 98164 (0% of the city)
• ZIP 98154 (0% of the city)
• ZIP 98174 (0% of the city)
• ZIP 98155 (0% of the city)

Nearest other places

Straight-line distance from the Census internal point of Seattle.

• Medina — 5.1 mi
• Hunts Point — 5.9 mi
• Clyde Hill — 6.3 mi
• Yarrow Point — 6.4 mi
• Mercer Island — 6.8 mi
• Beaux Arts Village — 7.3 mi
• Bainbridge Island — 7.4 mi
• Boulevard Park — 7.5 mi
• White Center — 7.6 mi
• Kirkland — 8.7 mi
• Bellevue — 9.2 mi
• Shoreline — 9.5 mi
• Burien — 9.9 mi
• Bryn Mawr-Skyway — 10.0 mi
• Lake Forest Park — 10.0 mi
• Manchester — 10.1 mi
• Kenmore — 10.2 mi
• Tukwila — 10.5 mi
• Newcastle — 10.6 mi
• Southworth — 11.1 mi
• Redmond — 11.7 mi
• Woodway — 11.8 mi
• Enetai — 11.9 mi
• Indianola — 12.0 mi
• Esperance — 12.0 mi
• Renton — 12.1 mi
• Mountlake Terrace — 12.3 mi
• SeaTac — 12.4 mi

Get the septic design for a property here

Parcel Perfect generates a code-shaped septic design and as-built style drawing for a parcel from the records and site data we hold, and shows every parcel we have classified as septic or sewer on one map. Both are open to use for any parcel in King County, Washington.

Open the parcel map and design tool