Septic companies in Poway, CA

What the ground in Poway is like

The USDA soil survey rates mapped ground in Poway for septic drain-field suitability across roughly 39 square miles. About 99% of the rated ground is classed "Very limited", the survey records severe restrictions for a conventional drain field across most of that ground.

In Poway, the leading limit is slope: the ground falls steeply enough that a level trench line is hard to hold. A drain field has to sit across the grade without concentrating flow downhill; on steeper parcels that layout gets tighter. The survey flags that limit on about 77% of the rated ground here.

The limiting features the survey records most often here:

• Slope77.1%
• Depth to bedrock69.6%
• Seepage, bottom layer55.3%
• Slow water movement36.0%

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 · 98.5% Very limited · Slope · 81 map units · 39.08 sq mi · read 2026-08-30