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Septic & well regulations in Dimmit County, TX
Dimmit County is located in the Rio Grande Valley region of Texas. South Texas Brush Country with sandy loam and clay soils over the Carrizo-Wilcox Aquifer. Semi-arid conditions. 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 including soil analysis 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.
Dimmit 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
South Texas Brush Country with sandy loam and clay soils over the Carrizo-Wilcox Aquifer. Semi-arid conditions. Nueces River drainage creates alluvial zones. Soil permeability varies from moderate in sandy uplands to slow in clay lowlands.
County-Specific Considerations
Dimmit County is served by TCEQ Region 13 San Antonio office for OSSF permitting. Groundwater Conservation District: Dimmit County Underground Water Conservation District. Carrizo Springs is the county seat. Eagle Ford Shale oil and gas activity has increased population and infrastructure demand. Wells tap the Carrizo-Wilcox Aquifer.
Find Services in Dimmit County
Septic Pumping
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Emergency Services
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Water Treatment
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Drain Field Repair
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Septic to Sewer Conversion
Dimmit County
Aerobic Septic System
Dimmit County
Well Water Filtration
Dimmit County
PFAS Water Testing
Dimmit County
Related Resources
Septic Permits & Regulations in Dimmit County — FAQ
How much does a septic permit cost in Dimmit County, TX?
- Septic permit fees in Dimmit 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 Dimmit County?
- The septic permit process in Dimmit 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 Dimmit County?
- Yes. Dimmit 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 Dimmit County, TX?
- TCEQ Region 13 - San Antonio Office oversees all septic system inspections in Dimmit County. Contact them at (210) 490-3096 to schedule an inspection or ask about requirements.
Can I install my own septic system in Dimmit County?
- Dimmit 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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