Piedmont Clay Soil
Piedmont Clay Soil: Percolation Rates and Drain Field Design in Georgia If your home sits anywhere in the band running from Columbus through Atlanta up to Athens and Gainesville, you’re on Piedmont soil — and if a septic installer has ever mentioned “perc rate” and shaken their head, this is why. This post digs into what percolation actually means, why Piedmont clay scores so poorly, and how drain fields are designed differently here than in sandier states. What a “Perc…