RESIDENTIAL SEPTIC DESIGN IN TRAVIS COUNTY
Design the Septic System Right For You
Building where the sewer doesn't reach? Then your septic design comes first, before the slab, before the framing. Get it wrong and everything behind it waits. HomeField designs systems that fit your land, pass review, and go in right.
In Travis County, the land votes first. West of I-35, limestone sits inches under the grass, and a standard drainfield needs two feet of usable soil it usually can't find. East of I-35, black clay runs deep but barely drains, so Texas bans standard drainfields in it. Over the Edwards Aquifer recharge zone, plans need a geologic assessment and an engineer or sanitarian behind them before anyone digs. We help you design for the ground you've actually got, then walk the plans through the right permit office. Locally owned, backed by HomeField operators across Texas and Arizona.
Why You Need Help With
SEPTIC DESIGN
In this county the factors aren't preferences. They're rock depth, soil class, aquifer rules, and which of seven permit offices your land answers to. Here's what has to get decided before anything gets dug:
THINGS YOU NEED TO THINK ABOUT:
- The Best Type Of System For Your Home
- The Right Tank Size For Your Expected Usage
- The Best Placement Options For Your System
- How To Fulfill All Texas And Local Regulations
- How Your Future Plans Impact All Of These
Design The Perfect Residential Septic System For All Your Needs
WHAT YOU SHOULD KNOW ABOUT
Septic Design
What Is The Best Type Of Septic System For You?
Honest answer: your soil decides most of it before you do. Texas replaced the old perc test with soil texture analysis, so a licensed evaluator digs test holes and classifies what comes up. A standard drainfield needs two feet of suitable soil beneath the trench, and west of I-35 that column rarely exists. Soils out here, with names like Tarrant and Brackett, hit limestone as little as 5 or 6 inches down. So most Hill Country lots get an aerobic system, which treats wastewater to a higher standard and disperses it through spray heads or drip lines.
East of I-35 the problem flips. Houston Black clay runs 80 inches deep and more, but it drains so slowly the state rates it Class IV and prohibits standard drainfields in it. Drip dispersal with secondary treatment is the usual answer there. Statewide, aerobic went from under 10 percent of new installs before 1995 to 55 percent by 2016, and around here it's most of what we design. Conventional still earns its keep in the deeper soil pockets, and when your lot qualifies, we'll say so. It's simpler and cheaper to own. The design's job is matching the system to your dirt, your household, and your plans.
How Long Should My Residential Septic System Last For?
Twenty years or more is a fair expectation. But lifespan gets decided twice: once at the drawing board, then every year after. A system designed against its soil dies young. Put a standard drainfield in clay that won't drain and you'll replace it early, with wastewater surfacing in the yard as your notice. A system designed for the ground it actually sits on, sized honestly for the household, can serve for decades.
The second half is upkeep. Most new systems here are aerobic, and aerobic units have working parts: an aerator, a pump, spray heads, a chlorinator. Texas requires a licensed provider to inspect them every four months. That's three visits a year, by law. Keep the tank pumped on schedule and the parts serviced, and there's no reason the system shouldn't outlast your mortgage. We design, install, and maintain systems under one roof, so the plan doesn't end when the drawing's approved. If you'd rather not carry the calendar yourself, our Advantage Plans start at $39 a month and put the schedule on us.
How Much Yard Space Will My Septic System Take Up?
That depends on what the dirt will take. A conventional drainfield gets sized by how fast your soil accepts water, so tighter soil means longer trenches and more of the yard given over to the field. An aerobic spray system needs a dedicated application area with setbacks from the house, the lot lines, wells, and water. Then this county adds its own layer. Over the Edwards Aquifer recharge zone, the rules get exact: at least one acre per home, the tank 50 feet or more from any recharge feature, the dispersal area 150 feet or more.
A sinkhole, a cave, or a fracture on the geologic assessment can shove your whole layout sideways. South of the river, that ground is the same plumbing that feeds Barton Springs, which is why the state checks. A good design also leaves room for what's next: the shop you'll build, the pool you keep talking about. We ask before we draw. The honest range runs from a few hundred square feet to a few thousand, depending on system and soil, and we'll give you a real number once we've walked your site.
How Much Does Septic Design And Installation Cost?
Two numbers, and they move together: the design work up front and the installation behind it. Design covers the site evaluation, the soil analysis, the drawings, and the permit paperwork. Installation depends on system type, tank size, dispersal area, and how your ground digs... limestone west of the escarpment doesn't excavate like clay east of it. Then there's the permit itself, and in this territory the fee depends on whose desk your plans land on. Travis County currently charges $712 for a standard residential permit. LCRA charges $260 for a conventional system near Lake Travis. Dripping Springs charges $600. Same metro, nearly a threefold spread.
On the recharge zone, plans have to come from a professional engineer or sanitarian, which adds design cost. Lake Austin frontage puts you under Austin Water no matter how the lot is drawn. We won't pretend one number covers all that. We evaluate the site, price the whole job before we start, and the number you approve is the number you pay. A builder client put it this way: "an excellent job from design to installation." That's the aim, with no surprises on the invoice.
MAINTENANCE PLAN
Maintain Your System With A HomeField Advantage Plan
Owning a septic system in Travis County means following local regulations. We’ve built our HomeField Advantage Plans to make caring for your septic system simple.
ONE CALL FOR ALL
Tired of calling around? One call to HomeField Travis County gets a team member right at your door, ready to take care of all your septic system needs.
A Proactive Home team
Want to avoid future problems? Our home team of septic experts work proactively for you, and our predictable pricing is so that you have no surprises along the way.
WIN NOW AND LATER
Want to win? Our Advantage Plans are designed to give you peace of mind around your septic system. We’re here to help you and your system as long as you need us.
Choose Your Advantage Plan
From required regular inspections to discounts on services to the whole enchilada of comprehensive maintenance and replacement, we have you covered with our plans
Or Are You Looking For A Commercial Plan?
TESTIMONIALS
What Our Customers Are Saying About Us
We’re here to give our customers around Travis County peace of mind whenever they think about their septic system. Here’s what they’ve been saying about our service.
OUR PROCESS
The Game Plan For Your Septic System Design
Designing your commercial system means discovering what your septic needs are (and will be), matching that with the right type of system, to making it all to code.
Location. Location. Location.
We’ll visit your prospective septic site to take a deep dive into its topography, soil type, soil permeability, and a host of other factors.
Determine Your Needs
We look at household size, expected water usage, and also your potential future needs to calculate your septic tank and drain field sizes.
Find The Right Type
Based on your expected usage, soil conditions, space available, and local regulations, we’ll help you land on the right system type and size.
Design The Right Layout
We’ll find the perfect place to put your septic tank, drain field, and additional parts of your system for correct flow and max accessibility.
Permits And Approvals
Once your system is designed and approved by you, we need to submit it to your local authorities for review, permitting, and code compliance.
Need Your System Designed?
OUR SERVICE AREA
WE LOVE OURHOME TURF
We proudly serve Austin and the cities and towns in our home turf of Travis County, including: