Septic companies in Alpharetta, GA

What the ground in Alpharetta is like

The USDA soil survey rates mapped ground in Alpharetta for septic drain-field suitability across roughly 27 square miles. About 60% of the rated ground is classed "Somewhat limited", the survey records restrictions that design and sizing can often work around.

In Alpharetta, 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 88% of the rated ground here.

The limiting features the survey records most often here:

• Slow water movement88.3%
• Slope34.8%
• Depth to saturated zone14.3%
• Flooding13.6%

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 · 60% Somewhat limited · Slow water movement · 53 map units · 26.9 sq mi · read 2026-08-30