Keep your septic system healthy by following these simple guidelines.
 DO conserve water - the less water you use, the less water your system has to treat. By reducing water use you can add years to the life of your septic system and avoid repairs.
Use low-flow shower heads.
Reduce toilet flushes.
Fix leaky faucets immediately.
Take shorter showers.
Wash no more than two loads of laundry per day and do full loads.
Wash only full dishwasher loads.
DO keep accurate maintenance and system installation records.
Do know where the lids are located and mark them well.
DO educate yourself about your specific septic system design--how it works, and what, if any, alarm systems it has.
DO make annual septic tank inspections - checking scum and sludge levels. Also periodically check the drain field for wet areas or settling.
DO landscape your system correctly. Planting grass over the leach field is the best idea. It is best if the field gets sufficient sunlight, so keep nearby trees from shading the field permanently.
DO use liquid detergents. Powder detergents have clay in them and can clog your leach field.
Do add a lint filter to the washing machine discharge side to prevent lint and other damaging debris from the system.

And the DONT'S
DON'T neglect your system. All septic tanks must be pumped on a regular basis!
DON'T drive vehicles of any type over your leach field.
DON'T graze or pen livestock on the field.
DON'T allow rain gutters to discharge over the leach field.
DON'T flush anything down the toilet other than human waste and toilet paper.

DONíT put the following in your tank:
Cooking oil, fats or grease
Bleach or Clorox
Coffee grounds
Industrial cleaners
Paint or solvents
Paper towels
Anything plastic
Feminine hygiene products, condoms or disposable diapers
Cigarette butts
Expired medications, especially antibiotics
Large amounts of harsh cleaning products, bleach or disinfectants
Automobile fluids, such as gas, oil, antifreeze, transmission fluid etc.

DON'T use a garbage disposal. Tank bacteria can not break down ground up food.
Never ever enter an empty septic tank for any reason. You can easily be overcome by odorless fumes that are noxious or dangerous. Only a trained technician with proper breathing equipment assisted by a safety team should enter an empty tank. PERIOD!