What is the average size of a septic system (gallons)?
I am trying to find what the average size/capacity of a residential septic system in gallons. From what I have found in my research it is in the 1500 to 1600 gallon range; is that correct? Please reference your answer (i.e. experience, knowledge, answer location, etc.) Thanks!
Public Comments
- The size of the tank depends on how many bedrooms the house has. The more bedrooms, the bigger the tank.
- tank size is matched with house size and the load it must handle http://www.inspect-ny.com/septic/tanksize.htm http://www.laundry-alternative.com/septic_tank_size
- ~*~The size of a septic system is based on the size of the household that will be using it. A typical tank for the US average family of four would have a liquid capacity of 1,500 gallons.
- You are in the ball park on size. When you contact your plumber, he will know how big to go for your area. There are a lot of variables, but this web site should help you in your decision. It will give you the size tank you need compared to your water usage per day. http://www.inspect-ny.com/septic/tanksize.htm
- To some extent it depends on where the waste goes after the septic tank. If it goes to a field, you need a little more processing time so a double tank with 750 gal in the first compartment and 1000 in the second is good for a family of 6. If you have a bell & siphon or pump system discharging into a bush patch then you can go smaller. We have a 750/1000 tank with a Bell & Siphon and our house is usually full of friends, relations, neighbours, kids, grandkids and assorted hangers on -- estimated over 50 flushes per day + laundry and dishwasher. After 25 years it's still working fine. I hope this helps. -- Oh, we're located in NE Alberta, Canada on a farm with light, well-drained soil.
