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Septic System Sizing

Use the application below to estimate the minimum code sizing requirements for a residential septic field (3 foot gravel or chamber systems).

10 min./inch perc rate >10-15 min./inch perc rate >15-20 min./inch perc rate >20-25 min./inch perc rate >25-30 min./inch perc rate >30-35 min./inch perc rate >35-40 min./inch perc rate >40-45 min./inch perc rate >45-50 min./inch perc rate >50-55 min./inch perc rate >55-60 min./inch perc rate 1 bedroom house 2 bedroom house 3 bedroom house 4 bedroom house 5 bedroom house 6 bedroom house 7 bedroom house No atp Include ATP Size of septic tank:   Size of septic field:   Expansion requirement:   ATP treatment capacity: