Septic companies in Napa, CA
3 septic companies on record in Napa, Napa County. About 91% of mapped ground here is rated Very limited for septic drain fields, with slow water movement the limiting feature.
What the ground in Napa is like
The USDA soil survey rates mapped ground in Napa for septic drain-field suitability across roughly 18 square miles. About 91% of the rated ground is classed "Very limited", the survey records severe restrictions for a conventional drain field across most of that ground.
In Napa, 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 93% 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 · 90.7% Very limited · Slow water movement · 40 map units · 18.06 sq mi · read 2026-08-30
Companies in Napa
- 25American Sanitation IncLicense unverified(707) 554-8258
- 5Mr Rooter PlumbingLicense unverified(707) 252-6578
- 5Napa Septic Tank Service, Inc.License unverified(707) 224-1748