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Septic & well regulations in Harris County, TX
Harris County is located in the Gulf Coast region of Texas. Gulf Coast prairie with Beaumont clay series dominating much of the county. Extremely flat terrain with poor natural drainage. 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. Harris County Public Health serves as a TCEQ Authorized Agent for local OSSF permitting. Most urbanized areas have municipal sewer. Remaining septic systems in unincorporated and older areas face high water tables and flooding challenges. 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 within 72 hours. Non-emergency repairs require a permit from Harris County Public Health.
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.
Harris County Environmental Health
Harris County Public Health - Environmental Health
Contact the county environmental health department for permit applications, soil evaluation scheduling, and regulatory questions.
Soil & Terrain Characteristics
Gulf Coast prairie with Beaumont clay series dominating much of the county. Extremely flat terrain with poor natural drainage. High water tables throughout. Buffalo Bayou, San Jacinto River, and numerous bayous create extensive floodplain areas. Clay soils have very slow percolation.
County-Specific Considerations
Harris County is a TCEQ Authorized Agent handling OSSF permits locally. Most populous county in Texas (Houston). Groundwater Conservation District: Harris-Galveston Subsidence District. Land subsidence from historical groundwater pumping has worsened flooding (up to 10 feet in some areas). Hurricane Harvey (2017) devastated septic systems. Most of Houston and suburbs have municipal sewer, but thousands of septic systems remain in unincorporated areas.
Find Services in Harris County
Septic Pumping
Harris County
Septic Inspection
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Septic Installation
Harris County
Well Water Testing
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Well Pump Repair
Harris County
Well Drilling
Harris County
Emergency Services
Harris County
Water Treatment
Harris County
Drain Field Repair
Harris County
Septic to Sewer Conversion
Harris County
Aerobic Septic System
Harris County
Well Water Filtration
Harris County
PFAS Water Testing
Harris County
Related Resources
Septic Permits & Regulations in Harris County — FAQ
How much does a septic permit cost in Harris County, TX?
- Septic permit fees in Harris County vary by permit type. New installation permits typically cost $200–$500, while repair permits are usually $100–$300. Contact Harris County Public Health - Environmental Health at (713) 274-6300 for current fee schedules.
How long does it take to get a septic permit in Harris County?
- The septic permit process in Harris 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 Harris County?
- Yes. Harris 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 Harris County, TX?
- Harris County Public Health - Environmental Health oversees all septic system inspections in Harris County. Contact them at (713) 274-6300 to schedule an inspection or ask about requirements.
Can I install my own septic system in Harris County?
- Harris County requires septic system installation by licensed contractors. All installations must be permitted through Harris County Public Health - Environmental Health and pass inspection before the system can be used.
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