Septic companies in Hillsboro, OR
3 septic companies on record in Hillsboro, Washington County. About 94% of mapped ground here is rated Very limited for septic drain fields, with slow water movement the limiting feature.
What the ground in Hillsboro is like
The USDA soil survey rates mapped ground in Hillsboro for septic drain-field suitability across roughly 27 square miles. About 94% of the rated ground is classed "Very limited", the survey records severe restrictions for a conventional drain field across most of that ground.
In Hillsboro, the leading limit is slow water movement: effluent does not drain through the soil fast enough, so a conventional field can back up or pond when the ground cannot keep pace. The survey flags that limit on about 100% of the rated ground here.
The limiting features the survey records most often here:
This is survey data for mapped areas, not a substitute for a site evaluation on your own lot. Conditions on a single parcel can differ from the map.
USDA NRCS SSURGO, ENG Septic Tank Absorption Fields · 94.2% Very limited · Slow water movement · 28 map units · 27.07 sq mi · read 2026-08-30
Companies in Hillsboro
- 25Mr. Rooter PlumbingLicense unverified(503) 549-4260
- 25Precision Earthworks LLCLicense unverified(503) 509-8926
- 25West Side Drain and SepticLicense unverified(503) 334-2228