Complete septic system replacement project
System Restoration Specialists

Septic System & Tank Replacement

Honest, professional replacement of failing lateral fields and deteriorated concrete tanks. Get a free second opinion before committing to major overhauls.

Replacing Failing Septic Infrastructure

Replacing a septic system is a major property investment. At AB Septic, we bring 15 years of field experience to evaluate whether your system truly requires total replacement or targeted repairs. We identify root failures—whether structural tank deterioration or soil biomat sealing.

Full septic excavation and replacement

We specialize in seamless OWTS overhauls throughout the Front Range, ensuring your new system is engineered to last and compliant with county health regulations.


🕳️ Why Concrete Tanks Fail

Over decades, standard concrete tanks break down. The primary culprit is hydrogen sulfide gas pooling in the air pocket above the water level. Combined with constant moisture, this gas creates sulfuric acid that rots concrete walls and drops internal dividing baffles.

Installing new poly septic tank

Warning: A crumbling or structurally fractured tank lid poses an immediate cave-in hazard. Avoid walking over compromised tanks.


📋 The AB Septic Replacement Process

We treat your property with respect, focusing on minimal disruption while delivering maximum reliability.

  • Transparent Diagnostics: We perform a thorough inspection before recommending any replacement work.
  • Permitting & Engineering: We secure all local county health permits and coordinate with engineers for approved site plans.
  • Turnkey Execution: Austin personally oversees heavy excavation, old tank abandonment, pipe pitching, and installation of modern corrosion-resistant tanks.

Frequently Asked Questions

How do I know if my septic tank needs to be replaced?

Concrete tanks naturally degrade over decades due to hydrogen sulfide gas corrosion. Warning signs that your tank is failing include sinking or sagging concrete lids, chronic indoor plumbing backups despite recent pumping, or saturated, foul-smelling soil directly over the tank location.

Should I choose a concrete or polyethylene septic tank for my replacement?

Both materials are highly effective when installed correctly. Concrete tanks are heavy and extremely durable but susceptible to long-term gas corrosion. Polyethylene (plastic) tanks are immune to gas corrosion and rust, making them incredibly long-lasting, though they require specific bedding techniques during installation. We evaluate your soil and site access to recommend the best option.

Is it cheaper to repair or completely replace a failing septic system?

It depends on the component. If a mechanical pump fails or a single lateral line is blocked by roots, a targeted repair is much cheaper. However, if a concrete tank is structurally crumbling or an entire drain field has reached biological failure (total biomat sealing), a complete engineered replacement is required by county code and is the only permanent solution.


📍 Key Replacement Service Areas

Signs You Need Replacement:

  • • Saturated leach field pooling water
  • • Sinking or sagging concrete lids
  • • Chronic interior plumbing backups
  • • Severe concrete structural corrosion
Finished septic lawn with low profile risers

Free Second Opinion

Told you need a costly full-system overhaul? Let us review your scope of work before committing to unnecessary expenses.

Call Austin Now

Request Estimate

Ready to replace an aging system or need an honest second opinion? Send your contact details and Austin will reach out to discuss your site plans.

📞 720-883-3390

📍 16570 Timber Cove St
Hudson, CO 80642

Our Colorado Service Coverage