Sewage System Design Resources

428 Canton Rd.

Cumming, Georgia 30040

Physical Health

770-781-6900

Fax 770-781-6929

Environmental Health

770-781-6909

Fax 770-781-6807

Sewage System Design Resources

This chart from the state manual shows the amount of drainfield necessary per bedroom in square footage of trench bottom based on the percolation rate. Residential Septic System Sizing Chart

This table from the state manual shows the estimated daily sewage flow of selected commercial sources. Commercial Sewage Flow Chart

This table shows the coefficients necessary to calculate the size of drainfield for a commercial facility based on daily sewage flow and percolation rate. Percolation Rate Chart For Commercial System Sizing

This is the list of state approved sewage systems and the sizing criteria. New Sewage System Sizing

Comment sheet for plan review. Commercial Site Plan Review Sheet

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Updated 01/23/2012

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