TCEQ-Licensed Designer & InstallerManchaca, TXServing Austin & the Hill Country
(512) 710-7163
Service · Upgrades & Replacements

When the old system is done, we build the right one.

Some systems can be repaired. Others have simply reached the end of their service life, or were never designed correctly to begin with. When replacement is the honest answer, we do it right: proper site evaluation, a system designed for your land today, full county permitting, and a clean installation under one TCEQ license.

What We Replace and Upgrade

A replacement is a new design opportunity

A septic system replacement is not just swapping out the old for the same thing. It is a chance to correct the original design, size the system properly for how the property is actually used, and choose a system type that is appropriate for current soil and code requirements. We approach replacements the same way we approach new installations, starting with what the site can actually support.

Common upgrade and replacement scenarios we handle: full drainfield replacement when the original field has saturated beyond recovery, tank replacement when the existing tank is structurally failing, conventional-to-aerobic system conversions when the lot cannot accommodate a new conventional field, and complete system replacement when an old unpermitted or non-code-compliant system needs to be brought up to current standards.

Properties in the Austin metro that were built decades ago frequently have septic systems that were designed under older rules with smaller capacity for the load they are now handling. Adding bedrooms, converting to full-time occupancy, or simply the passage of time and soil saturation can all make a replacement necessary. We evaluate the current system, the current site conditions, and what the property needs going forward, not just what it had before.

What upgrades and replacements include

  • Full site evaluation of existing system and current conditions
  • New system design appropriate for current soil, code, and use
  • Conventional or aerobic system, whichever the site requires
  • County OSSF permit for the replacement system
  • Demolition or abandonment of the old system per county rules
  • New tank set, drainfield or aerobic field, and plumbing connection
  • Clean excavation and site restoration
  • Final county inspection walked on your behalf

Upgrading to aerobic

If your conventional system has failed and your lot does not have room for a new conventional field, an aerobic system may be the path forward. Aerobic treatment requires less drainfield footprint and can work on sites where conventional systems are no longer viable. We evaluate whether your site qualifies and explain the cost and maintenance difference before you commit.

How It Goes

From failing system to properly designed replacement

1

Assessment

We evaluate the existing system, determine what has failed and why, and assess the current site conditions for the replacement design.

2

Design & Permit

New system designed for current conditions. OSSF permit filed and followed through approval. Same process as a new installation.

3

Remove & Replace

Old system abandoned or removed per county rules. New system installed cleanly with proper excavation and site restoration.

4

Final Inspection

County inspector met for final approval. Permit documents delivered to you. System handed off with a clean record.

What To Expect

Replacement cost and timeline

$8k–$20k+
Conventional replacement range, aerobic runs higher, firm number given after site evaluation
2–6 wks
Permit process timeline before installation, same as new installation permitting
1 team
Assessment, design, permit, and installation handled under one TCEQ license from start to finish
Upgrades & Replacements FAQ

Common questions

A system that has repeatedly failed or been repaired and still cannot function reliably is a replacement candidate. A drainfield that has completely saturated, a tank that has structurally failed, or a system that no longer meets current TCEQ code requirements are all situations where replacement makes more sense than continuing to repair. We assess the situation honestly and tell you which threshold you have crossed. We do not push replacement when repair is a legitimate option.
Yes. Upgrading from conventional to aerobic is a common path when the original drainfield has failed and the lot does not have room for a new conventional field, or when current regulations for the property require aerobic treatment. We evaluate the site, design the aerobic system, handle the OSSF permit, and complete the installation. The process is the same as a new aerobic installation.
Replacement cost depends on the system type required, the size of the property, and what the current system left behind. Conventional replacements run in a similar range to new installations, roughly $8,000 to $20,000 for most residential properties in the Austin area. Aerobic replacements run higher because of the additional components. We give you a firm number after the site evaluation, not a phone estimate that changes when we get on site.
Yes. A replacement system requires a new OSSF permit. The permit process includes a new site evaluation, a code-compliant design for the replacement system, county review and approval, and a final inspection after installation. We handle the entire permit process as part of the replacement job. You do not chase the county office.
Get Started

Ready to plan a replacement system?

Tell us about the current situation and your property. We’ll schedule the site assessment and walk you through what the replacement would involve and cost.