Size does matter

The capacity of the septic tank you will need depends mostly on the size of the house and the number of people who will reside there. In Texas, the county regulates septic systems. They will provide a “formula” that the licensed installer will use to ensure it’s adequate. Common residential septic tanks range in size from 750 gallons to 1,250 gallons.

Get it inspected

A full inspection includes a complete examination of the inside of your septic tank to check the water level and evaluate the tank’s performance. In most cases during a full inspection, the septic tank is pumped, and the drain field monitored for backflow.

Consider the costs

Household septic tanks are typically pumped every three to five years. Alternative systems with electrical float switches, pumps, or mechanical components should be inspected once a year. Keeping a system maintained is crucial to the health of your tank. Replacing one can cost between $3,000 to $7,000, and in some cases even more.

Check the age

A well-designed, professionally installed septic system can last 25 to 30 years. To keep yours up and running, avoid rinsing and flushing items that can clog fields and cause problems. A few of the culprits are dental floss, coffee grinds, kitty litter and paint. For a complete list, visit the EPA's list of septic systems.