Call Toll Free: 1-800-275-2436 (8AM-6PM EST) Email:

Capacity Estimator

Home Water Requirements

Use Flow rate (gpm) Total use (US Gallons)
Adult or child 50-100/day
Automatic washer 5 30-50/load
Dishwasher 2 7-15/load
Garbage Disposer 3 4-6/day
Kitchen sink (a) 3 2-4/use
Shower or tub 5 25-60/use
Toilet flush 3 4-7/use
Bathroom lavatory sink 2 1-2/use
Water softener regeneration 5 50/100/cycle
Backwash filters 10 100-200/backwashing
Outside hose faucet 5 5 gpm X minutes used

(a) water flow restricting valves and shower heads can reduce flow and water use by up to 50%.

Source: USDA “Water Systems Handbook.”

Septic Tank Capacity vs Usage

Average sewage flow gallons per day Minimum Gallons Effective Capacity(1)
0-500 900
601-700 1200
801-900 1500

Source: Florida ASHI Seminar, Kissimmee, October 1993

Subscribe to our newsletter

Call Toll Free: 1-800-275-2436
Hours: 8am – 8pm EST
© Chem-tainer Industries. All rights reserved.