Septic Services in Conroe, TX

Conroe homeowners pay $235-$350 for standard 1,000-gallon septic pumping, with emergency service at $400-$650 and aerobic contracts averaging $250-$375 yearly.

Conroe is one of the fastest-growing cities in Texas. The population has more than doubled since 2010 to over 114,000 residents, and it keeps climbing. According to TCEQ, approximately 20% of new homes built in Texas use septic systems, and that percentage is even higher in fast-growing areas like Conroe where municipal sewer hasn't caught up. The city sits between The Woodlands to the south and Sam Houston National Forest to the north, with Lake Conroe drawing residential development along its entire shoreline. You'll find everything here: 1980s ranch houses on aging conventional systems, brand-new subdivisions where the sewer line hasn't reached yet, and waterfront properties dealing with strict TCEQ requirements because Lake Conroe is a public water supply.

As the Montgomery County seat, Conroe is also where the county permitting office is located. That's a real convenience if you need septic permits handled in person.

Service	Conroe Price Range	Key Factor
Standard pumping (1,000 gal)	$235-$350	Tank accessibility
Large tank (1,500+ gal)	$350-$525	Tank size
Pumping + inspection	$425-$650	Pre-sale or routine
Emergency/after-hours	$400-$650	Time of call
New install (conventional)	$6,300-$7,500	Soil conditions
New install (aerobic/alt)	$10,000-$15,000+	Clay soils, lot size
Aerobic maintenance (annual)	$250-$375	TCEQ requirement

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What Septic Services Are Available in Conroe?

Conroe providers handle pumping, installation, repair, inspection, and aerobic maintenance, with pricing ranging from $235 for basic pumping to $15,000+ for new alternative systems.

Conroe's mix of older neighborhoods, new construction, and lakefront properties means local septic companies handle a wider range of work than in most Texas cities.

Septic Pumping

TCEQ recommends pumping every 3-5 years to prevent short-circuiting of the treatment process, with families of four or more closer to every 2-3 years. The Conroe soil series (clayey-loam over plinthite) drains slower than sandy soils, so don't push your pumping schedule. Homes near Lake Conroe or along tributary creeks face higher water tables that can stress drain fields during wet seasons, making regular pumping even more important.

New System Installation

With Conroe's rapid growth, new construction installations make up a bigger share of septic work here than in neighboring cities like The Woodlands. A conventional system for a three-bedroom home runs $6,300-$7,500 in the Conroe area. But lot sizes in newer subdivisions are shrinking, and the local clayey soils often push builders toward aerobic or mound systems that cost more. Expect $10,000-$15,000+ for an engineered alternative system.

Septic Repair

Older Conroe neighborhoods from the 1980s and 1990s have systems approaching 30-40 years old. Common repairs include cracked tanks, failing drain fields, and root-damaged lines (especially on properties near the National Forest). Drain field replacement runs $3,000-$7,000, tank repairs $1,500-$3,000, and clearing clogged lines $200-$500. If your system is 25+ years old and needs a $5,000+ repair, compare that against $6,300-$7,500 for a full conventional replacement. In many cases, replacing beats repairing an aging system.

Septic Inspection

Buying or selling a Conroe-area home? Get an inspection before closing. Full inspections run $250-$450, with combined pumping-and-inspection packages at $400-$600. For Lake Conroe waterfront properties, expect the inspector to pay closer attention to setback distances and system condition relative to the lake's water supply protection requirements.

Aerobic System Maintenance

Aerobic systems are common in Conroe, especially on properties with clay-heavy soils or near the lake. TCEQ requires a maintenance contract for the life of the system, with inspections every four months. Montgomery County requires a 2-year initial maintenance contract for new installations, then annual renewals after that. They follow up on lapsed contracts and can refer violations to Justice of the Peace Court. Budget $250-$375 per year.

What Local Factors Affect Septic Systems in the Conroe Area?

Clay-heavy soils, Lake Conroe's water supply protections, Sam Houston National Forest root intrusion, and rapid residential growth all shape septic system choices and costs in the Conroe area.

Conroe's Clay-Heavy Soils

Per the USDA Soil Survey, the dominant soil around Conroe is the Conroe series: deep, clayey-loam soils formed from fluviomarine deposits. These soils drain slowly and retain moisture, which is the opposite of what a conventional drain field wants.

As Nathan Glavy, Extension Program Specialist at the Texas Water Resources Institute (part of Texas A&M AgriLife), notes, "failing septic systems have been identified as a source of increased bacteria and nutrient loading" in Texas watersheds. Clay-heavy soils like Conroe's make proper system design especially important.

In practical terms, this means many Conroe properties can't support a basic gravity-fed septic system. Percolation tests determine what your soil can handle, and clay-heavy sites often require aerobic treatment units, raised mound systems, or sand filters. Sandy loam pockets exist in parts of the county, and those areas do better with conventional setups. But don't assume your soil is good until a licensed evaluator tests it.

Lake Conroe Waterfront Challenges

Lake Conroe is a public water supply reservoir, and that status brings extra regulatory attention to nearby septic systems. Properties near the shoreline face stricter oversight from both Montgomery County and TCEQ to prevent wastewater from reaching the lake.

What this means in practice:

• System designs near the lake typically require a registered sanitarian or professional engineer
• Aerobic or alternative systems are common because conventional drain fields struggle in the saturated soils near the shoreline
• Maintenance contracts and inspections get closer scrutiny from the county
• High water tables near the lake can saturate drain fields seasonally, especially during spring storms

If you own a Lake Conroe property, plan for higher upfront installation costs and more frequent monitoring than inland Conroe properties. A system that works fine during dry summer months might show stress during wet spring conditions.

Sam Houston National Forest Adjacency

Properties north and east of Conroe border Sam Houston National Forest. This means dense tree cover, and tree roots actively seek out the moisture in septic lines and tanks. Root intrusion cracks pipes, blocks flow, and damages drain field components.

These properties also tend to sit on larger, more remote lots. Truck access for pumping and repair can be difficult on wooded, unpaved roads. If your property is rural and heavily treed, mention that when you request quotes so providers can plan accordingly.

Rapid Growth and Lot Size Constraints

Conroe's population has grown over 27% just since 2020, and the city now tops 114,000 residents. New subdivisions are going in all around the area, and many are outside the municipal sewer service boundary.

The problem: newer subdivisions often have smaller lots than the rural acreages that traditional septic systems were designed for. Combined with Conroe's clay soils, this means more new homes need alternative systems that take up less space but cost more to install and maintain. If you're building new, make sure your builder accounts for the septic system in the lot layout from the start.

Montgomery County Septic Regulations

Conroe is the Montgomery County seat, and the county's Environmental Health Department is the TCEQ-authorized agent for septic permits. Their office is right here in Conroe, which makes in-person permitting straightforward.

Here's how the process works for new installations:

• Get a building development permit from Montgomery County Road & Bridge
• Have a licensed evaluator conduct a soil analysis and site evaluation
• Submit the design, soil report, and floorplan to the Environmental Health Department (permit fee: $165 per Montgomery County)
• Receive your Permit to Construct once approved
• A state-licensed installer does the work, with a mandatory two-year initial maintenance contract

Montgomery County requires that two-year maintenance contract upfront. After the initial period, homeowners must maintain annual contracts or face enforcement action. The county takes compliance seriously, with 30-day notices and court referrals for unresolved violations.

For properties on 10+ acres with a single-family home, TCEQ permitting exemptions may apply if the system meets all requirements and sits at least 100 feet from property lines. Check with the county to confirm.

How Much Do Septic Services Cost in Conroe, TX?

Most Conroe homeowners pay $250-$400 for standard septic pumping, with 1,000-gallon tanks averaging around $300.

Service	Conroe Price Range
Standard pumping (1,000 gal)	$235 - $350
Large tank (1,500+ gal)	$350 - $525
Pumping + inspection	$425 - $650
Emergency/after-hours	$400 - $650
Locating buried tank lid	+$75 - $150
Aerobic maintenance (annual)	$250 - $375
New installation (conventional)	$6,300 - $7,500

Conroe pricing lines up closely with the Texas state average for standard pumping. Costs push higher for homes with buried lids, limited truck access on wooded lots, or Lake Conroe waterfront properties that require additional compliance checks. New installations vary widely depending on soil conditions and system type.

Prices based on February 2026 provider surveys and market data for the Conroe/Montgomery County area. Your actual cost depends on tank size, accessibility, and system condition.

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How Does Getting Matched with a Conroe Septic Pro Work?

Fill out a short form, get matched with a licensed Montgomery County provider, and receive a no-obligation quote, usually within a few hours.

1. Tell Us About Your Needs

Fill out our short form with your septic service needs and Conroe-area address. Let us know if it's routine pumping, an inspection for a home sale, a new construction installation, or an emergency.

2. Get Matched with a Local Pro

We connect you with a licensed, insured septic professional who works in Montgomery County. Every provider in our network holds a current TCEQ license and has been vetted for quality.

3. Get Your Quote

Your matched provider contacts you within a few hours with clear pricing. No obligation. For emergencies, expect faster response from providers offering same-day service in the Conroe area.

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Why Choose a Local Conroe Septic Professional?

• They know the soil. A provider who works in Conroe regularly understands the local clay-heavy soils, which areas need alternative systems, and how to design drain fields that actually work here.
• Lake Conroe experience. Waterfront properties need providers who understand high water tables, seasonal fluctuations, and the stricter oversight that comes with being near a public water supply reservoir.
• County permitting relationships. Since the Montgomery County Environmental Health Department is based right in Conroe, local providers handle the permitting process regularly and know what inspectors expect.
• Growth-area knowledge. With so much new construction happening around Conroe, local companies are experienced with the lot size constraints and soil challenges that newer subdivisions present.

Serving Conroe and Surrounding Areas

We connect homeowners with septic professionals throughout the Conroe area, including:

• The Woodlands
• Willis
• Montgomery
• Magnolia
• Cut and Shoot
• Panorama Village
• Shenandoah
• New Caney
• Porter
• Splendora
• Cleveland
• Huntsville
• Pinehurst
• Stagecoach

Frequently Asked Questions About Septic Services in Conroe

How much does septic pumping cost in Conroe?

Standard septic pumping in Conroe costs $235-$350 for a 1,000-gallon tank, with most homeowners paying around $300. Larger 1,500-gallon tanks run $350-$525. Emergency and after-hours calls add $150-$300 to the base price. Homes with buried lids, wooded access, or distance from main roads cost more. These prices are in line with the broader Montgomery County and Houston metro area averages.

Does living near Lake Conroe affect my septic system requirements?

Yes. Lake Conroe is a public water supply reservoir, which means TCEQ and Montgomery County apply stricter oversight to septic systems near the shoreline. Per TCEQ regulations (30 TAC Chapter 285), properties close to the lake often need aerobic or alternative systems because conventional drain fields struggle in the saturated soils. High water tables limit your options, and seasonal fluctuations mean your system can perform differently in wet months versus dry months. Expect higher costs for both installation and ongoing maintenance compared to inland Conroe properties.

Who handles septic permits in Montgomery County?

The Montgomery County Environmental Health Department, located right here in Conroe, is the TCEQ-authorized agent for all septic permits in the county. They handle permits for new installations, repairs, and system upgrades. You'll also need a building development permit from Montgomery County Road & Bridge before starting. A licensed evaluator conducts the soil analysis and site evaluation, then submits the design to Environmental Health for approval. Since the office is in Conroe (the county seat), in-person permitting is straightforward.

Why is Conroe growing so fast, and what does that mean for septic?

Conroe's population has more than doubled since 2010, growing over 27% just since 2020 to exceed 114,000 residents. That growth means two things for septic. Many new subdivisions are outside municipal sewer boundaries, so new homes go on septic by default. And smaller lot sizes in these developments, combined with Conroe's clay-heavy soils, push more homeowners toward expensive alternative systems like aerobic units or mound systems. If you're buying new construction, verify what system type was installed and get the maintenance records from the builder.

How do I find my septic system on an older Conroe property?

Start with Montgomery County records. The Environmental Health Department keeps permits on file, and since they're located in Conroe, you can visit in person. If your home was built in the 1980s or 1990s, there should be a permit showing tank location and system type. You can also look for visual clues in your yard: a slightly raised or depressed area, unusually green grass in a strip pattern (your drain field), or a round concrete or plastic lid. If records are missing, a septic company can locate your tank electronically for $75-$150. The Houston-Galveston Area Council (H-GAC) also offers homeowner wastewater assistance funding for qualifying households that need septic repair or replacement.

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Last updated: February 9, 2026 Pricing based on Conroe/Montgomery County-area provider surveys and market data Sources: Montgomery County Environmental Health Department, TCEQ, Texas A&M AgriLife Extension, EPA