Septic systems in Rockwall County go through Environmental Health

Buy a few acres out toward the eastern edge of the county and you'll likely be on a septic system, an on-site sewage facility, OSSF in the paperwork. Before anyone digs, the county's Environmental Health Coordinator has to issue a permit with an approved plan, and that's true whether you're installing fresh, altering, repairing, or extending what's already in the ground.

The office is at 1101 E. Yellowjacket Lane, Suite 130, and keeps the four forms you'll actually reach for: the permit application for a new system, a repair-or-modification application, the service affidavit, and a change-of-ownership form. That last one is the one people forget. Buying a house on septic means transferring the OSSF record into your name, not just closing on the deed.

If a system is failing or you're not sure one was ever permitted, call Environmental Health at 972-204-7600 before you sink money into a fix. An unpermitted repair can mean redoing the work to code, and a failed septic that's leaking is a health-code matter the county can act on.