Failure to pump out the septic tank is the most common cause of septic system failure. If the septic tank fills up with an excess of solids, the wastewater will not have enough time to settle in the tank. These excess solids will then pass on to the drain field where they will clog the drain lines and soil. Excess water can come into the system from storms and groundwater, causing a failure to the system. Xeriscaping, or water conservation through creative landscaping, is a great way to control excess runoff.
Grease can thicken and clog the pipes.
Store cooking oils, fats, and grease in a can for disposal in the garbage. Small amounts of standard household cleaners, drain cleansers, detergent, etc., will be diluted in the tank and will cause no damage to the system. These products do not decompose in the septic system and will cause frequent and costly repairs for the homeowner and harm to the environment. If you do have one in the house, severely limit its use. Adding food wastes or other solids reduces your system's capacity and increases the need to pump the septic tank or cesspool.