Septic Tank Size Needed

There are plenty of factors that go into determining your water usage and needed septic tank size.

Septic tank size needed.

Septic tank size is an important consideration whether you re installing a completely new septic system or replacing your old tank. How big does our septic tank need to be. You can use the table below to get some idea of what size septic tank your home requires. Less than 2 500 sq.

Less than 3 500 sq. Figure 9 000 square feet a big difference. The size of the septic tank you need depends on the number of bedrooms in the home number of people living there the home s square footage and whether or not water saving fixtures are used. Typically the septic tank volume for a conventional tank and onsite effluent disposal system such as a drainfield is estimated at a minimum of 1000 gallons or 1 5 x average total daily wastewater flow.

The reason this is taken into account when installing a new septic tank and making sure it is sized properly is that septic tanks will usually last 40 50 years if properly maintained and thus there may be various owners or inhabitants in the home over the life of the septic tank. If an undersized septic tank exceeds its holding capacity sewage can back up into your home so when you re putting in a septic tank it s essential that you take the time to calculate the correct size. You now know how important the septic tank s size is for the whole. Tables codes calculations of required septic tank size.

Either way it gives you an estimated average. Less than 4 500 sq. But if the soil has poor percolation it s full of clay for example you can double the size of the field needed for that same three bedroom house. Need a 1 000 gallon tank.

The size of the septic tank you will need depends mostly on the size of the house and the number of people who will reside there. A septic tank is a self contained unit designed to hold residential wastewater. Most municipalities require even the smallest septic tanks to hold approximately 1 000 gallons. But there are a few additional things that should be taken into account.

The bottom line of septic tank installation. You can estimate the size of tank you need based on your home size and amount of water you use which can depend on the number of people living there. Too large a tank inhibits the creation of bacteria and the production of heat your system needs to run efficiently and optimally. You also have to take weather into consideration.

Common residential septic tanks range in size from 750 gallons to 1 250 gallons. Less than 5 500 sq. Need a 1 315 gallon tank. Need a 1 250 gallon tank.