Most of San Jacinto County Uses Septic Systems, Not City Sewer

Texas calls septic systems on-site sewage facilities, or OSSFs. TCEQ sets statewide construction, permit, and maintenance rules for these systems.

For most local questions, start with the San Jacinto County Permit Department. The county page lists On-Site Sewage Facility permits, development permits, and 9-1-1 addressing at 1 State Hwy. 150, Room 3, in Coldspring. The phone number is 936-653-3823.

Near Lake Conroe, check the boundary first. SJRA regulates and permits OSSFs within 2,075 feet of the reservoir. Its process asks for a system design, soil and site analysis, and review before construction can begin.