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Texas Septic System Regulations

Understanding TCEQ regulations, county requirements, and your obligations as a septic system owner in Texas.

If you own a property with a septic system in Texas, you’re subject to state and county regulations governing how that system is installed, maintained, and operated. Here’s what you need to know as a Hill Country homeowner.

TCEQ and On-Site Sewage Facilities (OSSF)

The Texas Commission on Environmental Quality (TCEQ) is the state agency that regulates on-site sewage facilities — the official term for septic systems. TCEQ establishes the rules under Title 30, Chapter 285 of the Texas Administrative Code, which covers everything from system design and installation standards to maintenance requirements and property owner responsibilities.

County Designated Representatives

TCEQ delegates enforcement to local counties through Designated Representatives (DRs) — typically the county health department or an authorized agent. Your county DR is responsible for issuing permits, conducting inspections, and enforcing OSSF regulations in your area.

In the Texas Hill Country, the relevant counties and their OSSF responsibilities include:

• Blanco County (Johnson City, Blanco)
• Hays County (Dripping Springs, Wimberley, Buda, Driftwood)
• Kendall County (Boerne, Kendelia)
• Gillespie County (Fredericksburg, Harper)
• Llano County (Llano)
• Burnet County (Burnet, Spicewood area)
• Travis County (Lake Travis, Spicewood area)
• Comal County (Spring Branch)

Key Regulations for Homeowners

Permits Are Required for Installation

All new septic system installations, replacements, and major repairs require a permit from your county’s Designated Representative. The permit process includes site evaluation, system design review, and post-installation inspection. Kingdom Septic Solutions handles the entire permitting process for our installation customers.

Aerobic Systems Require Maintenance Contracts

This is the most important regulation for many Hill Country homeowners: if you have an aerobic septic system, Texas law requires you to maintain a current maintenance contract with a licensed maintenance provider. This contract must be reported to your county. Failure to maintain an active contract can result in notices of violation and fines.

Licensed Professionals Only

TCEQ requires that septic system installation, repair, and maintenance be performed by licensed professionals. Installers must hold a valid TCEQ license (Installer I or II). Maintenance providers must hold a maintenance permit. Homeowners cannot legally perform most septic work on their own systems.

Property Transfer Requirements

When a property with a septic system changes ownership, the county may require documentation of the system’s condition. While not always a legal requirement, most real estate transactions in the Hill Country include a septic inspection as part of due diligence. Our inspection services provide the documentation you need.

Setback Requirements

Texas regulations specify minimum distances between septic system components and property features:

Edwards Aquifer and Recharge Zone Rules

Some Hill Country properties are located over the Edwards Aquifer recharge zone, which has additional regulations to protect groundwater quality. Properties in these areas may face stricter system requirements, including advanced treatment and enhanced monitoring. This is particularly relevant for properties in parts of Hays, Travis, and Comal counties.

Consequences of Non-Compliance

Violations of OSSF regulations can result in notices of violation from your county, fines, and in severe cases, legal action. More practically, a non-compliant system can affect your ability to sell your property, obtain insurance, or pass a real estate inspection.

How Kingdom Septic Solutions Helps You Stay Compliant

We handle compliance so you don’t have to worry about it:

• Installations meet or exceed all TCEQ and county requirements
• Maintenance plans include compliance reporting to your county
• We maintain all required maintenance records
• We coordinate directly with county Designated Representatives