Repairing a system may mean as little as fixing a damaged or broken pipe or Tank Lid. If your system is much older, a “repair” may mean installing a whole new system. Many factors determine the extent of repair or replacement needed.
However, regulations introduced by the state of Texas in 1996 require that all planning, installation, construction, alteration, extension, repair and operation of an OSSF must be in accordance with new rules. The term "Grandfathered" has no influence on the TCEQ requirements enforced by local regulatory agencies that govern On-Site Sewage Facilities.
If it is determined that the system will require major repair, a site evaluation and permitting would be required before the installation or repairs can be made.