Septic in Huntington, TX

Last updated: Mar 21, 2026

Welcome to Huntington, TX—a small East Texas town where pine canopies shade quiet streets and practical home care matters matter most. If you're buying or settling in, you'll quickly hear about septic systems, because they're the norm here. Is septic common in Huntington? Yes. Outside the city sewer boundaries, most homes rely on on-site systems, and even in newer neighborhoods extending centralized sewers can be costly and impractical. If a property sits within a city sewer district, you may be tied to a sewer bill, but that's less common in the heart of Huntington than in the surrounding rural areas.

Why Huntington homes typically use septic systems? Because the town and its surrounding countryside grew with lots that aren't always connected to a central sewer, and extending lines would be expensive for neighbors and the town. Septic lets wastewater be treated close to where it's produced, on a property-by-property basis. East Texas soils—often clay-rich and highly variable—can be well-suited to properly designed drain fields when the system is sized to the property. In short, septic is a practical, affordable solution for communities like Huntington that blend historic homes, newer builds, and spacious lots.

High-level explanation of why septic exists here: a typical residential septic system separates solids in a tank and allows liquid effluent to soak through a drain field into the soil, where natural processes finish the treatment. A licensed contractor designs and sizes the system for the lot and soil conditions, then the home's wastewater is processed on-site rather than in a distant treatment plant.

What this means for Huntington homeowners, in practical terms:

  • Expect pumping every 3–5 years for a typical household; more often if usage is high.
  • Have the system inspected by a licensed contractor every 1–3 years and keep good records.
  • Watch for signs of trouble: gurgling toilets, slow drains, wet soil or foul odors near the drain field.
  • Protect the drain field: avoid parking or heavy equipment over it, plant only shallow-rooted plants nearby, and keep roof drains and sprinklers away from the field.
  • If you're buying a home: request a septic inspection, note the tank size and age, and confirm the last pump date and field condition.
  • When in doubt, contact a local septic pro to assess performance or plan maintenance.

With these basics in mind, you'll be better prepared to navigate Huntington's septic landscape.

Where Septic Systems Are Common in Huntington

Map of septic coverage in Huntington, TX

Where you'll typically find septic in Huntington

  • Outside the municipal sewer service area: many Huntington homes rely on septic because hookups to a central sewer aren't available or economically feasible.
  • Older neighborhoods and rural lots: smaller towns often have long-existing septic systems that were installed when septic was the standard option.
  • Properties with larger lots or challenging terrain: septic is common where space is needed for a drain field or where gravity sewer lines would be impractical.
  • New construction on non-sewered parcels: even new homes on suitable parcels may use septic if city or county sewer lines don't extend to the lot.

Why Huntington's soils and water conditions support septic

  • Soil variety matters: Huntington sits in soils that can absorb and treat wastewater when properly designed (sandy loam and engineered fill can work well; heavy clay or high groundwater require adjustments).
  • Infiltration potential and drainage: properly graded drain fields rely on adequate infiltration rates; too-saturated soils or shallow bedrock reduce system efficiency and increase maintenance needs.
  • Seasonal groundwater and flood considerations: spring rains and local flood risk can affect drain-field performance, so siting and setbacks are important.
  • Proximity to water features: properties near creeks, rivers, or floodplains may require protective setbacks and alternative designs to prevent ground and groundwater contamination.

Common septic system designs you'll see in Huntington

  • Conventional gravity septic systems: the standard tank-and-drain-field setup for typical lots with adequate soil.
  • Mound systems: used when the native soil doesn't drain well or the groundwater table is high.
  • Aerobic treatment units (ATU) and advanced systems: for lots with limited space, poor soils, or higher treatment needs.
  • Chamber systems and trench enhancements: space-efficient options that still rely on a properly functioning drain field.
  • Greywater and landscape considerations: responsible yard drainage and plant-friendly practices help preserve drain-field life.

Site considerations and ongoing maintenance

  • Setbacks and zoning: typical requirements involve safe distances from wells, property lines, streams, and structures; local rules may vary, so check with the Huntington area authority.
  • Flood risk and drainage: if the lot sits in a flood-prone area, discuss mitigation options with a licensed septic professional.
  • Regular pumping and inspection: most conventional systems benefit from pumping every 3–5 years, with periodic inspections to catch problems early.
  • Avoiding common failures: avoid flushing wipes, chemicals, and solids-heavy waste that can clog the drain field; use water-saving fixtures to reduce load on the system.
  • Seasonal use considerations: seasonal cabins or infrequently used homes may need tailored maintenance plans to prevent septic issues when the system sits idle.

Steps to take when buying or installing a septic system in Huntington

  1. Verify sewer service status for the property with local authorities or the Huntington area health office to confirm septic is required or permitted.
  2. Have a licensed septic designer or contractor perform a soil evaluation and percolation test to determine the right system type and size.
  3. Obtain the required permits (and inspections) for onsite wastewater treatment systems from the Texas Commission on Environmental Quality (TCEQ) and your local health authority. Official resources:
  4. Schedule a professional installation and a post-installation inspection to ensure compliance and proper operation. Ongoing maintenance should follow the contractor's recommendations.

Helpful resources

Septic vs Sewer: What Homeowners in Huntington Should Know

How Huntington's systems typically work

In Huntington, TX, homes are either connected to a municipal sewer system or served by an on-site septic system (OSSF). If you're on sewer, your wastewater travels through city mains to a treatment plant, and you'll receive a sewer bill from the utility. If you have a septic system, wastewater is treated on your property in a septic tank and drainfield. The city handles public sewer maintenance; homeowners with septic systems are responsible for their private system's care, inspection, and pumping. Texas law requires OSSFs to be properly permitted and maintained (see official resources below).

Key differences between septic and sewer

  • Ownership and responsibility
    • Sewer: City maintains the system; you're responsible for plumbing inside the home.
    • Septic: You own and maintain the system on your property.
  • Bills and costs
    • Sewer: Regular monthly or quarterly sewer charges from the utility.
    • Septic: Periodic pumping and inspection costs; occasional repairs or replacement of components.
  • Maintenance focus
    • Sewer: Limited homeowner maintenance; avoid taxonomizing the utility's service but report issues promptly.
    • Septic: Regular pumping, careful waste disposal, and protecting the drainfield are essential.
  • Environmental considerations
    • Sewer: Treated at a central plant; consider system capacity and local infrastructure.
    • Septic: Proper drainfield size, soil conditions, and usage patterns influence long-term performance.

Signs your septic system needs attention

  • Slow drains or toilets that gurgle after flushing
  • Bad odors near the septic tank, drainfield, or plumbing
  • Soggy, unusually green or lush patches in the yard over the drainfield
  • Foundation or surface signs such as standing water after rainfall
  • Backups or sewage odors inside the home during heavy use

Verifying whether your home is on sewer or septic

  1. Check with Huntington public works or the local utility to confirm service type.
  2. Review property records or the sale/closing documents for "sewer connection" or "septic system" notes.
  3. Look for bills from a city sewer utility (monthly charges) or contact a licensed septic professional to confirm OSSF status on file.

Maintenance and cost considerations

  • Septic systems (OSSF)
    • Schedule pumping every 3–5 years, depending on tank size and household use.
    • Use water-saving fixtures and spread out laundry and dishwashing to avoid overwhelming the tank.
    • Avoid flushing wipes, solvents, paints, grease, and non-biodegradable items.
    • Protect the drainfield: keep heavy equipment off it, plant appropriate grasses, and prevent runoff.
  • Municipal sewer systems
    • Regular sewer maintenance is handled by the utility; you should report leaks, blockages, or unusual behavior promptly.
    • If you experience repeated backups, the issue may be in the public system or near the main; the utility or a licensed plumber can diagnose.
  • Costs to expect
    • Septic pumping, mobile and on-site services vary by region and tank size; recurring pumping is a predictable ongoing expense.
    • Sewer service typically involves a predictable monthly bill, with occasional rate adjustments by the utility.
    • Large repairs (drainfield replacement or major sewer line fixes) can be significant; obtain multiple quotes and confirm permits.

Quick maintenance habits you can start today

  • Keep a maintenance log with pumping dates, inspections, and repairs.
  • Use water-efficient appliances and fix leaks promptly.
  • Only flush toilet paper and human waste; dispose of fats, oils, and chemicals properly.
  • Protect the drainfield from heavy machinery and surface water pooling.
  • Schedule regular professional inspections, especially after heavy rainfall or location changes.

Official resources

Typical Septic System Types in Huntington

Conventional gravity septic systems

  • How they work: A septic tank separates solids; liquid effluent flows by gravity into a buried drainfield. Soil around the pipes discharges treated water back into the ground.
  • Typical parts: septic tank, distribution box, perforated drainfield lines (gravel-filled trenches or shallow beds).
  • Pros: Simple, low-maintenance components; widely available parts and service.
  • Cons: Requires adequate soil depth and permeability; performance declines with high water use or poor soil.
  • Maintenance at a glance:
    • Have the tank pumped every 3–5 years (usage, household size, and local conditions affect this).
    • Keep solids out of the system (fats, oils, diapers, wipes).
    • Schedule regular inspections if you notice slow drains, gurgling, or wet, lush spots over the drain area.

Chamber systems

  • How they work: Instead of gravel trenches, modular plastic chambers create deeper, open-air pathways for effluent in the drainfield.
  • Typical parts: prefabricated chamber units, distribution piping, soil cover.
  • Pros: Often easier and faster to install; can be more forgiving in limited trench widths.
  • Cons: Still relies on good soil conditions; requires proper backfill and compaction.
  • Maintenance basics:
    • Regular inspections per local codes.
    • Pumping schedule similar to conventional systems, with adjustments based on usage.

Mound systems

  • How they work: Used when native soil is shallow, has high groundwater, or poor permeability. An elevated drainfield (mound) sits above the grade with a tailored soil profile.
  • Typical parts: builder-installed mound structure, dosing-related components, extra fill soil, and a lift mechanism for effluent distribution.
  • Pros: Expands sites where traditional drainfields won't work; effective with restricted soils.
  • Cons: More expensive; requires more land area and ongoing maintenance.
  • Maintenance basics:
    • Monitor for surface wetness or odors; avoid heavy vehicle traffic on the mound.
    • Adhere to dosing and pump schedules as recommended by the designer and regulator.

Aerobic Treatment Units (ATU)

  • How they work: An ATU introduces oxygen-loving bacteria to treat wastewater more thoroughly before it reaches the drainfield.
  • Typical parts: aerobic tank, chlorination or disinfection stage, outlet to a drainfield or irrigation system; requires electricity.
  • Pros: Higher level of effluent treatment; can be used in marginal soils when paired with additional disposal methods.
  • Cons: Higher energy use and maintenance needs; more components to service.
  • Maintenance basics:
    • Serviced by a licensed operator; follow manufacturer maintenance schedules.
    • Regularly inspect for alarms, unusual odors, or reduced performance.

Sand filter systems

  • How they work: A secondary treatment stage where effluent passes through a buried sand bed to remove additional contaminants before disposal.
  • Typical parts: sand media bed, distribution system, a drainfield or irrigation connection.
  • Pros: Effective for certain soil conditions; can improve effluent quality coming into the drainfield.
  • Cons: Requires adequate space and proper maintenance; more complex than basic gravity systems.
  • Maintenance basics:
    • Routine inspections; periodic soil or media assessment as recommended.
    • Ensure the pump and distribution system operate correctly to prevent clogging.

Drip irrigation and evapotranspiration (ET) systems

  • How they work: Treated effluent is applied through drip emitters or ET beds to landscapes, reducing surface discharge and conserving water.
  • Pros: Water-efficient landscaping; useful where traditional drainfields are impractical.
  • Cons: Higher design, permitting, and regulatory oversight; requires careful ongoing management to avoid system failures.
  • Maintenance basics:
    • Seasonal testing of emitters and filters; protect lines from damage and freeze.
    • Follow local regulations for reuse and irrigation setbacks.

Regulatory and planning notes

  • Permit and dosing requirements typically come from the Texas Commission on Environmental Quality (TCEQ) and local health authorities. Check the state framework at https://www.tceq.texas.gov/permitting/ossf and the EPA's septic guidance at https://www.epa.gov/septic for official information and maintenance recommendations. For Huntington-specific rules, contact your local building or health department to align with site-specific designs and soil conditions.

Common Septic Issues in Huntington

Drain-field saturation and soil problems in Huntington

  • Huntington's East Texas soils are often clay-heavy with a relatively high water table, which makes drain fields prone to saturation after heavy rain or during wet seasons.
  • Signs you're experiencing this issue: slow or blocked drains, gurgling sounds in toilets, sewage odors near the drain field, and unusually lush, green patches over the drain field.
  • Why Huntington-specific: clay soils percolate poorly and rainfall is common, so the soil can't absorb effluent quickly. A shallow groundwater table near older subdivisions can push effluent back toward the surface.
  • What to do:
    1. Limit water use during wet periods (spread out laundry, skip long showers).
    2. Keep vehicles and heavy equipment off the drain field to prevent soil compaction.
    3. Schedule a licensed septic inspector to evaluate the tank and bed; consider larger or alternate-realm options (e.g., drain-field repair, upgrade, or mound system) if permitted by local health authorities.
    4. Improve surface drainage and ensure downspouts and runoff aren't feeding the drain field.
  • Official resources: Texas Commission on Environmental Quality (TCEQ) On-Site Sewage Facilities: https://www.tceq.texas.gov/permitting/ossf; EPA septic systems overview: https://www.epa.gov/septic

Tree roots and landscape encroachment

  • Tree roots are a common Huntington issue due to mature landscaping in many yards. Roots can infiltrate pipes, cause blockages, and crack the tank or leach field.
  • Signs: slow drains, backups, wet spots or softened soil above the drain field, and sudden changes in drainage patterns after landscaping activities.
  • Why Huntington: Many homes sit near established oaks and pines whose roots extend toward buried pipes and discharge areas.
  • What to do:
    1. Have a professional camera inspect the lines to locate root intrusion.
    2. If roots are present, cut back and install root barriers or reroute landscaping away from the system.
    3. Consider relocating the drain field if roots are unavoidable and space allows, with local health authority approval.
    4. Regularly monitor and maintain the system to prevent progressive damage.
  • Official resources: TCEQ OSSF guidance; EPA septic resources

Inadequate pumping and maintenance schedules

  • A common Huntington scenario is solids buildup from aging tanks or mis-sized tanks, especially in homes with garbage disposals and high daily flow.
  • Signs: frequent backups, toilets taking long to drain, signs of standing water in the septic tank area, and reduced effluent quality.
  • Why Huntington: older homes may have smaller tanks or outdated systems designed for lower daily usage; infrequent pumping accelerates solids accumulation in clay soils.
  • What to do:
    1. Determine your tank size and typical solids load; many systems benefit from pumping every 3–5 years, but check with a licensed pro.
    2. Keep a pumping and inspection schedule; document service dates.
    3. Reduce solids entering the system (avoid disposing of wipes, coffee grounds, or large amounts of cooking oil down drains).
    4. Consider adding a properly installed effluent filter and regular tank cleanouts as recommended by a pro.
  • Official resources: TCEQ OSSF; EPA septic systems overview

Fats, oils, and grease (FOG) and solid waste issues

  • Kitchen waste and disposals contribute to accelerated solids buildup and can clog septic components.
  • Signs: slower drainage, frequent pump needs, and backups after heavy kitchen use.
  • Why Huntington: in homes with disposals or heavy kitchen waste, FOG can overwhelm the tank and leach field more quickly in clay soils.
  • What to do:
    1. Collect fats, oils, and grease in a container and discard in the trash.
    2. Use the garbage disposal sparingly; compost what you can.
    3. Install strainers in sinks and clean them regularly.
    4. If you notice repeated backups, have the system inspected and pumped as needed.
  • Official resources: EPA septic systems overview

Flooding, storms, and high groundwater impacts

  • Heavy rainfall and episodic flooding common to parts of Texas can push effluent out of the soil absorption area or saturate the drain field.
  • Signs: sudden backups after heavy rain, damp soil around the drain field for extended periods, and persistent odors.
  • What to do:
    1. Avoid using the septic system during and immediately after storms.
    2. Divert surface water away from the drain field and ensure proper drainage around the property.
    3. Have the system inspected after flood events to assess damage and determine repairs.
  • Official resources: TCEQ OSSF; EPA septic systems overview

System age, design, and local regulation

  • Older Huntington homes may have systems that no longer meet current absorption or size requirements, or that were installed without updated local guidelines.
  • Signs: unusual odor, frequent backups, or wet areas indicating drain-field problems.
  • What to do:
    1. Have a licensed professional evaluate system age, capacity, and condition.
    2. Work with local health authorities to determine compliant repair or replacement options.
    3. Plan proactive upgrades before failures occur.
  • Official resources: TCEQ OSSF; EPA septic systems overview

Septic Inspection, Permits & Local Oversight

Oversight in Huntington, TX

In Texas, most septic systems fall under statewide regulation by the Texas Commission on Environmental Quality (TCEQ) through the On-Site Sewage Facilities (OSSF) program. Local agencies enforce permits, inspections, and compliance for residential systems. In Huntington (Angelina County), you'll typically deal with the Angelina County Health District or the local city building department to confirm who issues permits and performs inspections for your address. Since rules can vary by neighborhood, start by checking with Huntington City Hall or the county health district to verify the exact authority for your property.

Permits you may encounter

  • New installation: An OSSF permit is usually required before any installation. Designs may need to be prepared by a licensed septic designer, and soil testing or percolation testing may be part of the process.
  • Repair or replacement: Significant repairs or complete replacement of components (tank, drainfield, lines) typically require a permit.
  • Alterations or expansions: If you're changing system capacity, adding living space, or altering drainage, a permit is generally needed.
  • Real estate transfer: Some counties require an OSSF transfer inspection during real estate transactions; verify requirements early in the process.

How to apply (step-by-step)

  1. Identify the permit issuer for your address (TCEQ vs. local health district or city department).
  2. Gather documentation: site sketch showing system location, existing tank and drainfield details, soil evaluation data if available, and any proposed design notes.
  3. Hire a licensed OSSF designer or installer if your jurisdiction requires it.
  4. Submit the permit package: complete application, plans, and any soil or site data to the issuing authority.
  5. Schedule inspections: conduct inspections during installation (underground work, tank placement, trenching) and a final inspection to close the permit.
  6. Receive final approval and retain permit records for your property file.

Real estate transactions and disclosures

  • Sellers should disclose known OSSF status, age, capacity, past repairs, and any current issues.
  • Buyers should request a current OSSF status and, if needed, a transfer inspection or full-system evaluation.
  • If problems are found, coordinate timely repairs or system upgrades with the seller or escrow company; lenders may require documentation of system condition.

Quick-start tips for Huntington homeowners

  • Contact Huntington City Hall or Angelina County Health District to confirm the local permit process for your address.
  • Review the TCEQ OSSF page to understand installation, repair, and permit requirements for your project.
  • Use EPA septic resources to grasp basic maintenance and common failure causes, helping you prepare for inspections and long-term system care.

Septic Maintenance for Homes in Huntington

Understanding Huntington's soil and water conditions

Huntington sits in East Texas where soils are often clay-heavy and over limestone bedrock. That combination can slow effluent movement and make drain fields more sensitive to saturation after heavy rains. Expect seasonal shifts: wet springs and heavy rainfall can raise the water table and reduce soil's ability to absorb effluent. Tree roots from nearby oaks, pines, and other hardwoods can intrude on pipes and trenches. Flood-prone pockets and low-lying lots can also affect septic performance. For local guidance, check with the Texas Commission on Environmental Quality (TCEQ) and your county health department for any Huntington-specific rules or advisories. Official resources:

Cost Expectations for Septic Services in Huntington

Septic Tank Pumping

  • What the service includes: Vacuuming the tank to remove sludge and solids, removing the waste, and inspecting tank components (baffles, lids, risers) for signs of wear. In Huntington, access can be tighter in older lots, so technicians may need to uncover lids or adjust equipment to reach tanks without damaging landscaping.
  • Huntington-specific notes: East Texas soils and occasional heavy rainfall can influence pumping frequency. If groundwater is high, a pump-out plan may be coordinated with seasonal weather to minimize storm-related runoff into the system.
  • Typical cost in Huntington: $250–$600, depending on tank size (common residential tanks are often 1,000 gallons) and access distance.
  • Official resource: Texas Commission on Environmental Quality (TCEQ) OSSF program guidelines: https://www.tceq.texas.gov/permitting/ossf

Septic System Inspection

  • What the service includes: A thorough check of the tank(s), cover integrity, inlet/outlet baffles, drain field condition, distribution box, and effluent flow. May include dye testing or camera inspection of pipes if accessible. Often performed as part of a home sale or by a dedicated septic inspector.
  • Huntington-specific notes: In Huntington, a clear inspection helps identify soil and drainage constraints before a real estate transfer or a major remodel, reducing surprises later.
  • Typical cost in Huntington: $200–$350 for a standalone septic inspection; could be higher if a full camera or dye test is included.
  • Official resource: TCEQ OSSF guidelines; EPA septic system overview for homeowner understanding: https://www.epa.gov/septic

New Septic Tank Installation (System Design & Installation)

  • What the service includes: Site evaluation, soil testing, system design by a licensed designer, permit coordination, installation of the tank and drain field, backfill, and startup checks. In Huntington, crews must account for local permit processes and soil conditions.
  • Huntington-specific notes: Soil types in East Texas (often challenging with clay or variable percolation) influence leach-field sizing and placement. A locally experienced installer can optimize for groundwater proximity and site constraints.
  • Typical cost in Huntington: $7,000–$25,000+ for a standard residential system, with larger or more complex designs exceeding this range.
  • Official resource: TCEQ OSSF program; local permitting guidance via Liberty County Health Department resources (official county channels): https://www.tceq.texas.gov/permitting/ossf

Septic Tank Replacement

  • What the service includes: Removal of an old tank, disposal, trenching or trenchless work for new tank placement, reconnecting lines, and system start-up. Includes site restoration.
  • Huntington-specific notes: If the existing drain field is too compromised (common with aging East Texas systems), replacement may require larger field or alternative designs to meet code and lot constraints.
  • Typical cost in Huntington: $5,000–$15,000+, depending on tank size and field requirements.
  • Official resource: TCEQ OSSF guidelines; information on replacement considerations: https://www.tceq.texas.gov/permitting/ossf

Drain Field (Leach Field) Repair or Replacement

  • What the service includes: Evaluation of the drain field, possible jetting/line cleaning, repair of damaged laterals or trenches, soil amendments, and potentially full replacement of the field.
  • Huntington-specific notes: Clay soils and fluctuating water tables in East Texas can drive higher costs and more extensive field work to restore proper drainage.
  • Typical cost in Huntington: $5,000–$15,000+, with substantial variations based on field size and accessibility.
  • Official resource: TCEQ OSSF guidelines; soil and design considerations from extension resources: https://www.tceq.texas.gov/permitting/ossf

Drain Field Evaluation & Line Cleaning (Camera Inspection, Dye Tests)

  • What the service includes: Locating and evaluating the drain field with cameras, dye testing to verify flow paths, and identifying leaks or blockages. Can guide repairs before a full replacement.
  • Huntington-specific notes: Accurate locating is important in older Huntington neighborhoods where lines may be buried under landscaping or driveways.
  • Typical cost in Huntington: $500–$1,500.
  • Official resource: TCEQ OSSF guidelines; state and local guidance on line testing and evaluation: https://www.tceq.texas.gov/permitting/ossf

Septic System Maintenance Plans / Regular Service

  • What the service includes: Scheduled pumping, annual or biennial inspections, and proactive checks of baffles, lids, and field conditions to prevent failures.
  • Huntington-specific notes: Regular maintenance helps mitigate seasonal weather impacts and soil-related wear common in East Texas.
  • Typical cost in Huntington: $150–$350 per year for a basic maintenance contract; higher if bundled with diagnostics or emergency services.
  • Official resource: TCEQ OSSF guidelines; (general homeowner care resources): https://www.tceq.texas.gov/permitting/ossf

Septic Tank Risers & Lids Installation

  • What the service includes: Installing or upgrading risers and secure, accessible lids to simplify future maintenance and reduce the need for heavy digging.
  • Huntington-specific notes: Accessible lids are especially helpful in yards with dense landscaping or tight access points common in Huntington neighborhoods.
  • Typical cost in Huntington: $500–$1,800.
  • Official resource: TCEQ OSSF guidelines on accessibility and maintenance: https://www.tceq.texas.gov/permitting/ossf
  • Permits, Design, and Fees (Overview)
  • What this includes: Permit filing, system design, plan review, and necessary fees through the local authority; often required for new installations or significant repairs.
  • Huntington-specific notes: Local health departments enforce design and permitting standards; expect review times that reflect county workloads.
  • Typical cost in Huntington: Design and permitting typically add $500–$2,000+ to project cost, depending on scope and lot specifics.
  • Official resource: TCEQ OSSF program; Liberty County Health Department official pages for local permitting: https://www.tceq.texas.gov/permitting/ossf