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Septic & well regulations in Montgomery County, TX

Montgomery County is located in the Gulf Coast region of Texas. Gulf Coastal Plain with sandy loam and clay soils. San Jacinto River and Lake Conroe create areas with high water tables. 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. Montgomery County Environmental Health serves as a TCEQ Authorized Agent for local OSSF permitting. Site evaluation required. 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 Montgomery County Environmental 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.

Montgomery County Environmental Health

Montgomery County Environmental Health

Contact the county environmental health department for permit applications, soil evaluation scheduling, and regulatory questions.

Soil & Terrain Characteristics

Gulf Coastal Plain with sandy loam and clay soils. San Jacinto River and Lake Conroe create areas with high water tables. Piney Woods ecology with sandy uplands. East Fork of the San Jacinto floodplain.

County-Specific Considerations

Montgomery County is a TCEQ Authorized Agent handling OSSF permits locally. Conroe is the county seat. The Woodlands is a major planned community. One of the fastest-growing counties in Texas. Groundwater Conservation District: Lone Star GCD. Land subsidence from groundwater pumping is a concern. Wells draw from the Gulf Coast Aquifer.

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Septic Permits & Regulations in Montgomery County — FAQ

How much does a septic permit cost in Montgomery County, TX?

Septic permit fees in Montgomery County vary by permit type. New installation permits typically cost $200–$500, while repair permits are usually $100–$300. Contact Montgomery County Environmental Health at (936) 539-7842 for current fee schedules.

How long does it take to get a septic permit in Montgomery County?

The septic permit process in Montgomery 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 Montgomery County?

Yes. Montgomery 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 Montgomery County, TX?

Montgomery County Environmental Health oversees all septic system inspections in Montgomery County. Contact them at (936) 539-7842 to schedule an inspection or ask about requirements.

Can I install my own septic system in Montgomery County?

Montgomery County requires septic system installation by licensed contractors. All installations must be permitted through Montgomery County Environmental Health and pass inspection before the system can be used.

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