Over 8,700 homes in Scott County rely on an ISTS (otherwise known as a “septic system”), for their on-site wastewater treatment. A septic system is a large and important investment. It is vital that homeowners understand how their system works, and that they do what they can to extend the life of their ISTS. The positive benefits of a properly-functioning and long-lasting septic system are both financial and environmental. Visit the links on the left side of the screen for more important information on your septic system.