Article: How often should I pump my tank?

 

Over 25% of the population in North America depend on a septic tank and this percentage is higher in rural or remote area. Tank sizes are typically between 1,000 and 2,000 gallons - depending on when it was installed.

Holding tanks have a set capacity and typically has an alarm that will go off when it is close to full. The time between holding tank pumpings completely depends on the usage.

Septic tanks have a set capacity based on gallons, but with a drain field the contents can run through a drain field after decomposing. Septic tanks are always full with water, but the solids builds up over time and will need to be pumped out when the fill the tank. The frequency completely depends on how many people are using the septic system, the volume of solids in wastewater (garbage disposal, dirty clothes, where you live) and the tank size. In general, once every 3 years is adequate for most septic tanks.