I found some interesting information on the DHEC website, that serves as a good overview for South Carolinians.

South Carolina households generate nearly 3 billion gallons of sewage each year. About 60 percent of homes are served by public or community sewer systems. The rest — more than 1 million households — rely on septic tanks located on their property.

Well designed, well-maintained septic tank systems use nature — bacteria and soil — to break down and filter the waste we flush and rinse away. They can be the safest, most cost-efficient way to treat wastewater.

But a leaky, clogged or damaged septic system can:

  • Contaminate your home's drinking water well and make your family and neighbors sick with diarrhea, nausea, cramps and hepatitis
  • Push untreated sewage to the surface of your yard and into ditches and creeks
  • Cause sewage backups in your sinks, tub and toilet
  • Pollute nearby ponds, lakes and rivers, exposing people and animals to viruses and eye and ear infections, and
  • Cost a small fortune to repair.
South Carolina's Challenge

 In an average year, 10 to 30 percent of septic systems fail to work properly, usually because of poor maintenance. Don't let yours be one of them — learn how your septic system works and how to care for it