In King County, Washington, which covers Vashon, 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 Vashon on its own and this page does not estimate one.
Vashon is a census-designated place in King County, Washington. The Census Bureau puts its internal point at 47.411191, -122.455105 and its land area at 36.96 square miles. Septic permitting and record keeping happen at the county level, not the census-designated place level, which is why every figure below is attributed to the county and linked back to the county page it came from.
| County | Records we hold | Parcels on septic | Parcels on sewer | County records portal | Searchable without an account |
|---|---|---|---|---|---|
| King County | 184,607 | 84,437 | 486,662 | county portal | no account needed |
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 Vashon 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 Vashon 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.
Septic is one subject with very different jobs inside it. These go straight to the page that does yours.
| If you are a | Go to | Because it covers |
|---|---|---|
| Homeowner | Septic pumping in Vashon | keeping the system you have working |
| Buyer or seller | Buying or selling in Vashon | what to pull and check before closing |
| Realtor | Buying or selling in Vashon | the same records a seller needs on file |
| Designer or engineer | Septic design in Vashon | design flow, tank capacity, dispersal sizing |
| Installer or contractor | Septic installation in Vashon | site evaluation, permit sequence, inspection |
| Septic pumper | Septic pumping in Vashon | tank access, lids and service interval |
| Inspector | Septic inspection in Vashon | what gets checked and what a failure means |
| Land investor | Septic installation in Vashon | whether raw land can take a system at all |
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 Vashon itself
| Business | Town on file | Phone | Rating |
|---|---|---|---|
| Niece Pumping Service (Romero Island | Vashon | (206) 463-5969 | — |
| Greentree Dozing | Vashon | (206) 463-3889 | — |
| Niece Pumping Service | Vashon | (206) 463-5969 | — |
| Greentree Dozing | Vashon | (206) 300-7840 | — |
| Lewis Roggenbuck Const LLC | Vashon | (206) 391-1184 | — |
| Mike's Materials LLC | Vashon | (206) 463-3457 | — |
| Potential Energy Inc | Vashon | (206) 794-9809 | — |
No. We measure septic and sewer at parcel level and roll it up by county. In King County, Washington, which covers Vashon, 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 Vashon on its own and this page does not estimate one.
Vashon is in King County, Washington.
From the Census ZCTA-to-place relationship file, with the share of Vashon’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.
Straight-line distance from the Census internal point of Vashon.
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.