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Septic & well regulations in Karnes County, TX
Karnes County is located in the Gulf Coast region of Texas. Inner Gulf Coastal Plain with sandy loam and clay soils over the Carrizo-Wilcox and Gulf Coast Aquifers. San Antonio River and Ecleto Creek create alluvial zones. Understanding local permit requirements and soil conditions is essential before installing, repairing, or inspecting a septic system.
Permits & Requirements
New Installation
TCEQ OSSF permit required under 30 TAC Chapter 285. Site evaluation required. Permit application submitted to TCEQ Region 13 San Antonio office. Properties 10 acres or larger with a single-family dwelling may qualify for the 10-acre exemption.
Repair
Emergency repairs may proceed without prior permit but must be reported to TCEQ within 72 hours. Non-emergency repairs require a permit from TCEQ Region 13.
Inspection
Aerobic systems require inspections 3 times per year by a licensed Maintenance Provider. A 2-year initial maintenance contract is mandatory for all new aerobic installations.
Karnes County Environmental Health
TCEQ Region 13 - San Antonio Office
Contact the county environmental health department for permit applications, soil evaluation scheduling, and regulatory questions.
Soil & Terrain Characteristics
Inner Gulf Coastal Plain with sandy loam and clay soils over the Carrizo-Wilcox and Gulf Coast Aquifers. San Antonio River and Ecleto Creek create alluvial zones. Mixed permeability across the county.
County-Specific Considerations
Karnes County is served by TCEQ Region 13 for OSSF permitting. Karnes City is the county seat. Eagle Ford Shale oil production has significantly increased population and development. Wells draw from the Carrizo-Wilcox Aquifer.
Find Services in Karnes County
Septic Pumping
Karnes County
Septic Inspection
Karnes County
Septic Installation
Karnes County
Well Water Testing
Karnes County
Well Pump Repair
Karnes County
Well Drilling
Karnes County
Emergency Services
Karnes County
Water Treatment
Karnes County
Drain Field Repair
Karnes County
Septic to Sewer Conversion
Karnes County
Aerobic Septic System
Karnes County
Well Water Filtration
Karnes County
PFAS Water Testing
Karnes County
Related Resources
Septic Permits & Regulations in Karnes County — FAQ
How much does a septic permit cost in Karnes County, TX?
- Septic permit fees in Karnes County vary by permit type. New installation permits typically cost $200–$500, while repair permits are usually $100–$300. Contact TCEQ Region 13 - San Antonio Office at (210) 490-3096 for current fee schedules.
How long does it take to get a septic permit in Karnes County?
- The septic permit process in Karnes County generally takes 2–6 weeks, depending on soil evaluation scheduling and application completeness. Soil evaluations must be performed by a licensed soil scientist before applying.
Do I need a soil evaluation for a septic permit in Karnes County?
- Yes. Karnes County requires a professional soil evaluation before issuing any septic permit. A licensed soil scientist evaluates soil type, depth, drainage, and water table levels to determine the appropriate septic system design.
Who handles septic inspections in Karnes County, TX?
- TCEQ Region 13 - San Antonio Office oversees all septic system inspections in Karnes County. Contact them at (210) 490-3096 to schedule an inspection or ask about requirements.
Can I install my own septic system in Karnes County?
- Karnes County requires septic system installation by licensed contractors. All installations must be permitted through TCEQ Region 13 - San Antonio Office and pass inspection before the system can be used.
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