Why Aerobic Systems Are So Common in Montgomery County
If you own a home in unincorporated Montgomery County — particularly in areas around Lake Conroe, Willis, Montgomery, Cut and Shoot, or Panorama Village — there's a good chance your property has an aerobic septic system rather than a conventional one. The reason is Montgomery County's soil.
The county sits on Houston-area Vertisol clay — one of the most challenging soil types for conventional septic systems. This clay expands dramatically when wet and contracts sharply during dry periods, creating a cycle of soil movement that compacts and clogs conventional drain fields over time. Aerobic systems treat wastewater to a much higher standard before it reaches the soil, producing an effluent that the clay can actually handle. Many properties in Montgomery County can't meet TCEQ's soil-suitability standards for conventional systems at all — aerobic is the only option available.
Texas TCEQ Aerobic Maintenance Requirements — What the Law Says
Aerobic treatment units in Texas are regulated under 30 TAC Chapter 285 (Texas Commission on Environmental Quality) and Texas Health & Safety Code Section 366.0515. Here's what the law requires:
- Active maintenance contract required: Every aerobic system owner must have an active contract with a TCEQ-licensed maintenance provider
- Inspections every 4 months: Three visits per year, spaced no more than 4 months apart
- Report to county within 14 days: Provider must submit a maintenance report to Montgomery County Environmental Health Services after each visit
- Disinfection compliance: Chlorine tablet concentration in the disinfection chamber must be checked and maintained at each visit
- Component checks: Air pump operation, spray heads, alarm system, control panel — all must be inspected and documented
Need to get your aerobic system into compliance? Call to connect with a licensed provider.
Call (936) 555-0142What a Maintenance Visit Covers
Every TCEQ-compliant aerobic maintenance visit includes:
| Component | What's Checked |
|---|---|
| Air pump / aerator | Operation, air pressure, wear |
| Spray heads / irrigation | Proper spray pattern, clogs, coverage |
| Disinfection chamber | Chlorine tablet level, residual concentration |
| Control panel & alarm | Float switches, alarm function, wiring |
| Tank levels | Liquid levels in all compartments |
| Overall system | Visual inspection, odor, surface ponding |
What Does an Aerobic Maintenance Contract Cost?
Maintenance contracts for Texas aerobic systems typically run $200–$500 per year for the three required inspections. Some providers charge a flat annual fee; others charge per visit. The contract should specify what minor repairs are included versus billed separately. Ask for a written contract that references TCEQ compliance and Montgomery County reporting requirements.
Aerobic vs. Conventional Systems in Montgomery County
Aerobic System FAQs — Texas & Montgomery County
What happens if I don't have an aerobic maintenance contract in Texas?
Operating an aerobic system without a valid maintenance contract is a violation of Texas Health & Safety Code Section 366.0515. Montgomery County Environmental Health Services can issue notices of violation and require corrective action. When selling a property, lack of a current maintenance contract will typically come up during the septic inspection required for real estate transactions.
My aerobic alarm is going off — what should I do?
An aerobic alarm typically means the air pump has failed, a float switch has triggered indicating high liquid levels, or the system has another mechanical problem. Call a licensed contractor right away. Avoid using large amounts of water (laundry, dishwasher, multiple showers) until the system is assessed. Some alarms self-clear; most indicate something that needs attention.
Can I switch from a conventional to an aerobic system?
Yes, and in many parts of Montgomery County it's the recommended upgrade when a conventional system fails or when a property can't get a conventional system permitted due to soil conditions. The conversion requires a permit from Montgomery County Environmental Health Services and installation by a licensed OSSF installer. A site evaluation will determine the best system design for your lot.
Does an aerobic system need to be pumped like a conventional tank?
Yes — the settling compartment of an aerobic system still accumulates solids over time and typically needs pumping every 3–5 years, in addition to the required maintenance visits. Your maintenance provider can tell you when the settling tank is due for pump-out based on solids levels observed during maintenance visits.