Septic System Installation in New Ulm, Texas
Licensed, bonded septic installers in New Ulm and across Austin 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 Ulm 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 Ulm & Austin County
New construction, manufactured & mobile homes
Out around New Ulm, most homes sit on land city sewer never reached, so they 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 Austin County permit, and build it to pass inspection the first time.
Get My Free EstimateNew Ulm sits in the far west of Austin County near the Colorado County line, a painted-churches town in the rolling blackland. Its surrounding acreage places and weekend ranches all run on well and septic, with clay-heavy soil that typically calls for an aerobic system.
What we install in New Ulm
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 Austin County soils
Advanced aerobic treatment systems
A lot of the ground around New Ulm is heavy clay, and in spots the water table sits high part of the year. 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 free soil test tells us exactly what your lot can take.
We handle Austin County permitting for New Ulm
Septic permits around New Ulm go through Austin County, not the state. 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 county.
In Austin County — that's Bellville and Sealy country, not the city of Austin — septic permits run through the Austin County Planning & Development Department at One East Main in Bellville. The county has one quirk worth knowing up front: a county Development Permit or Exemption Certificate is required before the OSSF permit, and the property needs a posted 911 address for permits and the final inspection. The OSSF application itself attaches the site evaluation and system design and lists the TCEQ license numbers of the site evaluator, designer, and installer. The program runs under TCEQ 30 TAC Chapter 285, permits are valid for one year, and we sequence the development permit, the evaluation, and the septic submittal so the approvals land in the right order.
New to septic? Our guides cover the basics: How Much Does a New Septic System Cost in Texas? (2026) · What Size Septic Tank Do I Need? · What Is a Perc Test (and Why Does It Matter)?
Local OSSF permitting authority: Austin County Planning & Development Department
Typical county permit fee: About $275–$375 (county fees change — we confirm the current amount during permitting)
Soil & site conditions near New Ulm
Austin County's rolling post-oak uplands in the north run to tight blackland-type clays and claypan soils — the Bleiblerville clay series is literally named for a community in this county — while the southern prairie toward Sealy and Wallis is loamy on top over slowly permeable clay subsoil. Slow percolation is the common thread: water stalls on the clay, which fails the TCEQ criteria for a conventional gravity drainfield on many sites. That's why aerobic systems with spray or drip dispersal are the frequent answer here, and why the county's own fee schedule prices aerobic permits as their own category. The on-site soil evaluation makes the call for your land.
Why New Ulm 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 Ulm install works
Instant estimate
Get a ballpark price for your New Ulm 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 Austin County OSSF permit end to end.
Install & inspection
Professional installation and final county sign-off.
What homeowners say
"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 Ulm septic questions
Do you install septic systems in New Ulm?
Yes. We install new septic systems all over New Ulm and Austin County — for new construction, manufactured homes, and mobile homes.
How much does a septic system cost in New Ulm?
Most New Ulm installs run between $9,000 and $15,500 — about $9,000 for a conventional system where the soil allows it, $13,500 for an aerobic spray system, and $15,500 for an aerobic system with drip dispersal. 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 Ulm?
Yes. Any new septic system in New Ulm needs a Austin County permit and a soil test before anyone digs — and we take care of all of it for you.
Who issues septic permits in Austin County, and what does the permit cost?
The Austin County Planning & Development Department at One East Main in Bellville, (979) 865-5911, administers OSSF permitting. On the county's current fee schedule, a single-family residential permit runs $275 for a conventional system and $375 for an aerobic system (any type). Fees change, so we confirm the current amount when we file.
What are the steps to get a septic system permitted in Austin County?
First, the county requires a Development Permit or Exemption Certificate before it will issue the OSSF permit, and the property needs a posted 911 address. Then the OSSF application goes in with the site evaluation and the system design, listing the TCEQ license numbers of the evaluator, designer, and installer. Once approved, the permit is valid for one year. We sequence all of it so nothing is filed out of order.
Why does the county charge more for an aerobic permit, and will I need one?
Aerobic permits run $375 versus $275 conventional because they involve more review — and yes, many Austin County lots end up aerobic. The claypan uplands in the north (home of the Bleiblerville clay series) and the loam-over-clay prairie toward Sealy both percolate slowly, which often fails the criteria for a conventional gravity field. Your on-site soil evaluation decides it.
Can you install a septic system for a manufactured or mobile home in Austin County?
Yes. Manufactured homes on acreage around Bellville, Sealy, Cat Spring, and New Ulm need their own permitted on-site system, and the process is the same as a site-built house — development permit first, then the site evaluation, design, OSSF permit, licensed installation, and final inspection. We handle the full sequence.
Is this the same as septic permitting in the city of Austin?
No — different place entirely. Austin County is the rural county between Houston and Columbus, with Bellville as the county seat; the city of Austin sits 100 miles west in Travis County. Septic permits here are issued by Austin County Planning & Development in Bellville, under the county's own OSSF program and fee schedule.
Do I really need the development permit before the septic permit?
Yes. Austin County requires a Development Permit or Exemption Certificate before the OSSF permit — filing them out of order is the most common self-inflicted delay here. The county also wants the 911 address posted before permits and final inspection. We check both boxes at the start of your project so the septic application sails through.
Check your New Ulm lot before you buy or build
Soil rating, flood zone, wetlands, and the likely septic system type for any New Ulm address — free, in seconds.
Get your free New Ulm septic estimate
Tell us a little about your New Ulm property and we'll size your system and set up a free visit. No pressure, no obligation.