Septic System Installation in New Waverly, Texas
Licensed, bonded septic installers in New Waverly and across Walker County. We handle the soil test, the county permit, and the full install.
Licensed & Bonded
Texas OSF installer
Permitted & Inspected
County health-dept approved
New Installs Only
Built right the first time
Free Estimates
No-obligation, on-site
Instant Estimate
Your New Waverly septic estimate in 60 seconds
A few quick questions and you'll see your system size and a price range. No obligation, no contact info to start.
What are you installing a septic system for?
We specialize in new installs for homes on rural land.
New Waverly & Walker County
New construction, manufactured & mobile homes
Out around New Waverly, homes beyond the reach of city sewer run on their own septic system. We install new systems for new builds, manufactured homes, and mobile homes. We run the soil and perc testing, pull the Walker County permit, and build it to pass inspection the first time.
Get My Free EstimateNew Waverly was founded on the railroad in the 1880s and sits on I-45 about 13 miles south of Huntsville. The city has sewer, and its subdivision rules push new lots onto it; outside the city, Walker County permits septic systems.
Septic systems in New Waverly
When New Waverly was founded on the railroad in the 1880s, the older settlement of Waverly, a cultural and educational center before the Civil War, declined; the city incorporated in 1952 and had 914 people in the 2020 census. New Waverly has city sewer, with a $410 tap fee, and in 2024 it took on a state-funded project to replace about 1,570 feet of sewer main along FM 1375. Its 2017 subdivision ordinance applies in the city and its extraterritorial jurisdiction: if city water or sewer with enough capacity is within 2,000 feet, the developer must extend it to every lot; large-lot subdivisions need at least an acre with city sewer or an acre and a half without; the City Engineer can bar soil-absorption systems where high groundwater, flooding or poor soil would make them fail; and no city water or sewer goes to a subdivision without an approved, recorded plat. Inside the city, a manufactured home needs a lot of at least 12,000 square feet and a $25 permit. Walker County's septic program covers only unincorporated land, and its own permit packet sends applicants inside New Waverly to the city, so for an in-city lot we start with City Hall. Outside the city, the county issues the permit: $210, plus a $100 development permit. Lake Conroe is about five miles southwest, too far for the San Jacinto River Authority's lake zone to reach town.
Septic conditions around New Waverly
We ran 35 spots within 5 miles of downtown New Waverly through the same public data our free land check uses: the USDA soil survey, FEMA's flood maps and the National Wetlands Inventory. Here is what they show for a new septic system.
100%
35 of 35 spots
Soil the USDA rates "very limited" for a standard septic drainfield
100%
35 of 35 spots
Point to an aerobic system instead of a conventional drainfield
11%
4 of 35 spots
Inside a FEMA high-risk flood zone (the 100-year floodplain)
17%
6 of 35 spots
A mapped wetland within about 100 feet
Most of the ground around New Waverly won't take a standard gravity drainfield: water moves through the soil too slowly and groundwater sits close to the surface in wet months. Plan on an aerobic system with spray or drip dispersal, from $11,950 installed. The two soil borings on your own lot make the final call. Prices cover the system and installation; the site evaluation, design and county permit are quoted separately.
4 of the 35 spots are in a FEMA high-risk flood zone. A lot there adds floodplain rules to the septic design and usually a county floodplain permit, so check your lot's zone early.
Most common soils around New Waverly
| Soil | Spots | Drainfield rating | Main limitation |
|---|---|---|---|
| AnnonaAnnona fine sandy loam, 1 to 5 percent slopes | 14 | Very limited | Slow drainage, High water table |
| DepcorDepcor-Huntsburg-Gunter association, gently rolling | 6 | Very limited | High water table, Slow drainage |
| WoodvilleWoodville fine sandy loam, 1 to 5 percent slopes | 5 | Very limited | Slow drainage, High water table |
| RedcoRedco clay, 0 to 2 percent slopes | 4 | Very limited | Slow drainage |
| BleiblervilleBleiblerville clay | 2 | Very limited | Slow drainage |
4 more spots on 3 other soil types.
A map sample isn't your lot. The USDA soil survey maps the landscape at 1:24,000, and Texas requires a licensed site evaluator or engineer to evaluate every tract before a permit (30 TAC §285.30). Run your own address through the free land check to see what the maps show for your lot.
Check my land freeSources: USDA NRCS Soil Survey (SSURGO), FEMA National Flood Hazard Layer, USFWS National Wetlands Inventory. 35 spots on a 1.6-mile grid, checked October 2, 2026.
What we install in New Waverly
Site Evaluation & Perc Testing
We evaluate your soil and run the percolation test that determines how well your ground absorbs water — the foundation of a system that works.
System Design & Sizing
We size the tank and drainfield to your home's bedroom count and your soil's absorption rate, then engineer a layout that fits your lot.
Permitting & County Approval
We prepare and submit your on-site sewage facility (OSF) permit application and coordinate approvals with your county health department.
Excavation & Site Prep
We prepare the site and excavate for the tank and drainfield with the right grade and setbacks — protecting your wells, structures, and property lines.
Tank Installation
We set the septic tank, connect the inlet and outlet plumbing at the correct grade, and install the effluent filter and risers for easy future access.
Drainfield Installation
We install the drainfield (leach field) that disperses treated effluent safely into the soil, sized to your percolation results and available area.
Built for Walker County soils
Advanced aerobic treatment systems
The USDA soil survey rates most of the ground around New Waverly "very limited" for a standard drainfield: it drains too slowly, holds a high water table part of the year, or both. On lots like that a standard gravity drainfield won't pass, so you'll need an aerobic system with drip or spray dispersal. We don't guess at it — the on-site soil test tells us exactly what your lot can take.
We handle Walker County permitting for New Waverly
Septic permits around New Waverly are issued locally, usually by Walker County. We put the application together, turn in the soil and design paperwork, and stay on it through approval and the final inspection — so you're not the one chasing the permit office.
New to septic? Our guides cover the basics: How Much Does It Cost to Install a Septic System in Texas? (2026) · What Size Septic Tank Do I Need? · What Is a Perc Test (and Why Does It Matter)?
Local OSSF permitting authority: Walker County Planning & Development — On-Site Wastewater
Typical county permit fee: About $210 (county fees change — we confirm the current amount during permitting)
Permit steps, fees and FAQs for Walker CountyWhy New Waverly homeowners choose us
Licensed & Bonded
Move forward knowing your project is handled by a licensed, bonded installer.
New Construction & Mobile Home Specialists
We install new systems for new construction, manufactured, and mobile homes — so we're fast, precise, and up to date on the rules.
We Handle the Permits
Soil testing, design documentation, and county OSF approval — all managed for you.
Honest, Upfront Estimates
Clear, itemized quotes after we evaluate your site. No pressure, no surprises.
Local & Dependable
We know your county's requirements and show up when we say we will.
Built to Last
Properly sized, properly installed, and restored clean — a system you can forget about.
How your New Waverly install works
Instant estimate
Get a ballpark price for your New Waverly project online in about a minute.
Free on-site evaluation
We test your soil and confirm the right system for your lot.
Permit & design
We handle the Walker County OSSF permit end to end.
Install & inspection
Professional installation and final county sign-off.
What homeowners say
"Quick flow septic was a great experience!! Honest, good prices, and quick to respond to customer’s questions and concerns. Alex and his team will do everything to make it right. Would definitely recommend. 10/10"
"They handled our soil test, permit, and full septic install for our new build. The process was clear, the crew stayed on schedule, and the county inspection passed the first time."
The Ramirez Family
Montgomery County, TX
"We needed septic for our manufactured home and they took care of everything from design to approval. Clear pricing, good communication, and no surprises."
Carlos & Elena Martinez
Waller County, TX
"Our property was raw land and we did not know where to start. They sized the system, handled the county paperwork, and kept the project moving."
The Johnson Family
Liberty County, TX
"Responsive, professional, and familiar with the local requirements. They made the permit and installation process much easier than we expected."
Miguel Hernandez
Fort Bend County, TX
New Waverly septic questions
Does New Waverly have city sewer?
Yes. The city provides sewer service with a $410 tap fee, and in 2024 it began a state-funded project to replace about 1,570 feet of sewer main along FM 1375. Inside the city, manufactured homes moving in must have water, sewer and garbage service and a lot of at least 12,000 square feet.
Can a new subdivision near New Waverly use septic?
Only if city utilities are far enough away. Under the 2017 subdivision ordinance, which covers the city and its extraterritorial jurisdiction, a developer must extend city water or sewer to every lot when it's available within 2,000 feet. Without city sewer, large-lot subdivisions need lots of at least an acre and a half, and the City Engineer can bar drainfields where groundwater, flooding or the soil would make them fail.
Who permits septic systems in New Waverly?
Outside the city limits, Walker County's On-Site Wastewater office: $210 for the permit plus a $100 development permit, with a permit required at any acreage. Inside the city limits, the county's program doesn't apply, and its permit packet points applicants to the city, so we check with New Waverly City Hall first.
Will I need an aerobic septic system in New Waverly?
Probably. Of the 35 spots we checked within 5 miles of downtown New Waverly, 35 point to an aerobic system, mainly because water moves through the soil too slowly and groundwater sits close to the surface in wet months. Aerobic systems start at $11,950 installed (the site evaluation, design and permit are quoted separately). The two soil borings on your lot make the final call.
Is New Waverly in a flood zone?
Parts of the area are. 4 of the 35 spots we checked within 5 miles of downtown New Waverly are inside a FEMA Special Flood Hazard Area (the 100-year floodplain), including 1 in the regulatory floodway. Your own lot's zone is what counts, so run the address through our free land check before you buy or design.
Do you install septic systems in New Waverly?
Yes. We install new septic systems on land in and around New Waverly and across Walker County — for new construction, manufactured homes, and mobile homes. Inside city limits that have city sewer, you'll usually connect to the sewer instead.
How much does a septic system cost in New Waverly?
Most New Waverly installs run between $8,000 and $13,950 — $8,000 for a conventional system where the soil allows it, $11,950 for an aerobic spray system, and $13,950 for an aerobic system with drip dispersal. The soil evaluation (perc test), the engineered design, and the county permit are quoted separately. Run the instant estimate for a ballpark, and we'll confirm the exact number once we've seen the lot.
Do I need a permit for a septic system in New Waverly?
Yes. Every new septic system needs a permit and a soil evaluation before anyone digs. Around New Waverly the permit usually comes from Walker County, and we take care of all of it for you.
Check your New Waverly lot before you buy or build
Soil rating, flood zone, wetlands, and the likely septic system type for any New Waverly address — free, in seconds.
Get your free New Waverly septic estimate
Tell us a little about your New Waverly property and we'll size your system and set up a free visit. No pressure, no obligation.