Homeowners should generally have their system inspected every three years by a qualified professional or according to their state or local health department's recommendations. Tanks should be pumped when necessary, typically every three to five years.

Avoid pouring fats, grease, and solids down the drain. These substances can clog a system's pipes and drainfield.

Only put things in the drain or toilet that belong there. For example, coffee grounds, dental floss, disposable diapers and wipes, feminine hygiene products, cigarette butts, and cat litter can all clog and potentially damage septic systems.

Be water-efficient and spread out water use. Fix plumbing leaks and install faucet aerators and water-efficient products. Spread out laundry and dishwasher loads throughout the day - too much water at once can overload a system that hasn't been pumped recently.

Remind guests not to park or drive on a system's drainfield, where the vehicle's weight could damage buried pipes or disrupt underground flow.

Routinely pumping your tank can prevent your septic system from premature failure, which can lead to groundwater contamination.

If septic systems aren't properly maintained, leaks can contaminate well water. Testing your drinking water well is the best way to ensure your well water is free from contaminates.