In Washington County, Oregon, which covers Hillsboro, we have measured 10,442 parcels on septic and 134,730 on sewer. That is a county measurement. We do not hold a septic count for Hillsboro on its own and this page does not estimate one.
Hillsboro is a city in Washington County, Oregon. The Census Bureau puts its internal point at 45.526798, -122.935395 and its land area at 26.44 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.
| County | Records we hold | Parcels on septic | Parcels on sewer | County records portal | Searchable without an account |
|---|---|---|---|---|---|
| Washington County | 0 | 10,442 | 134,730 | county portal | account or login required |
We have not yet collected septic documents from Washington County, Oregon, so for a Hillsboro property the county's own file is currently the only route. This page is about getting you to it, not about pretending we hold something we do not. The county is predominantly sewered: only 10,442 of 145,172 classified parcels are on septic. Septic properties near Hillsboro are the exception, which is exactly why owners often do not know they have one. The county publishes a records portal, but reaching the documents needs an account or a login, so budget for that step rather than expecting an open search.
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 Hillsboro | keeping the system you have working |
| Buyer or seller | Buying or selling in Hillsboro | what to pull and check before closing |
| Realtor | Buying or selling in Hillsboro | the same records a seller needs on file |
| Designer or engineer | Septic design in Hillsboro | design flow, tank capacity, dispersal sizing |
| Installer or contractor | Septic installation in Hillsboro | site evaluation, permit sequence, inspection |
| Septic pumper | Septic pumping in Hillsboro | tank access, lids and service interval |
| Inspector | Septic inspection in Hillsboro | what gets checked and what a failure means |
| Land investor | Septic installation in Hillsboro | 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 Hillsboro itself
| Business | Town on file | Phone | Rating |
|---|---|---|---|
| Precision Earthworks | Hillsboro | (503) 268-1767 | 4.1 (7) |
| West Side Drain | Hillsboro | (503) 522-2727 | 4.2 (36) |
No. We measure septic and sewer at parcel level and roll it up by county. In Washington County, Oregon, which covers Hillsboro, we have measured 10,442 parcels on septic and 134,730 on sewer. That is a county measurement. We do not hold a septic count for Hillsboro on its own and this page does not estimate one.
Hillsboro is in Washington County, Oregon.
From the Census ZCTA-to-place relationship file, with the share of Hillsboro’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 Hillsboro.
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 Washington County, Oregon.