Septic System Replacement in Beaumont, TX
Not every failing septic needs replacement — but when the tank is a rusted-through pre-1980 steel, the drain field has failed past repair, or the county has issued a non-compliance order the system cannot economically meet, replacement is the honest answer. We handle the full sequence: site re-evaluation, TCEQ OSSF permit, old-system decommissioning, new tank + field install, county inspection, cover-up.
End-of-life indicators for a Southeast Texas septic system
- Steel tank on a pre-1980 property. Original steel tanks in Jefferson County soil have almost all reached end of life. Rust perforations are the norm, not the exception, on tanks past 40 years.
- Concrete tank with structural cracking. A hairline crack is a patch job. Wall failure, collapsed lid support, or floor separation is replacement territory.
- Drain field failed and repair options exhausted. If jetting has been done, the D-box has been rebuilt, and the field is still refusing to accept effluent, the field is saturated past recovery and needs replacement.
- Non-compliance order from the county. Jefferson County has issued a formal notice that the current system does not meet code, and the corrective action cost exceeds a partial replacement.
- Multiple simultaneous failures. Tank + field + D-box + effluent pump all failing in the same year is not four separate repair jobs — it is a system that has aged out.
- System type mismatch with current use. House has been added onto (bedroom count increased), or property use changed (residential to commercial). Existing OSSF permit is for a smaller load than actual use.
Replacement scope options
- Tank-only replacement. Drain field is sound, only the tank needs replacing. $4,500–$9,500. Permit still required; new tank has to meet current TCEQ sizing minimums for the property's bedroom count.
- Drain field only. Tank is sound, field has failed. $3,500–$8,000 for partial field replacement, higher for full re-siting. See drain field repair for the diagnostic side.
- Full conventional replacement. Old tank + old field decommissioned, new tank + new gravity field installed. $10,000–$18,000. TCEQ OSSF permit + soil evaluation required.
- Conventional-to-aerobic upgrade. Current lot cannot support a conventional gravity field due to soil conditions. Aerobic (ATU) with spray-head field replaces both tank and field. $14,000–$22,000+. TCEQ maintenance contract required for the life of the ATU.
- Full aerobic (ATU) replacement. Existing ATU past 20 years, control panel and blower failed, tank corrosion. $12,000–$20,000.
Replacement pricing (Beaumont area, 2026)
| Scope | Typical range | Timeline |
|---|---|---|
| Tank-only replacement (concrete, 1,000 gal) | $4,500–$7,500 | 2–4 weeks incl. permit |
| Tank-only replacement (1,500 gal) | $6,000–$9,500 | 2–4 weeks incl. permit |
| Drain field partial replacement | $3,500–$8,000 | 2–4 weeks incl. permit |
| Full conventional replacement | $10,000–$18,000 | 5–8 weeks incl. permit |
| Conventional-to-aerobic upgrade | $14,000–$22,000+ | 6–10 weeks incl. permit |
| Aerobic (ATU) full replacement | $12,000–$20,000 | 5–8 weeks incl. permit |
| Old-tank decommissioning (per TCEQ 285) | included in above | same visit as new tank install |
| Site evaluation + soil percolation test | $400–$900 | first week of the project |
The replacement calendar
- Week 1. Site visit + soil percolation test + system design decision. Written scope + firm quote.
- Weeks 1–4. TCEQ OSSF permit filing with Jefferson County Environmental Health.
- Excavation days 1–2. Old tank pumped final time, tank exposed, decommissioning per TCEQ 285 (fill or remove).
- Excavation days 2–5. New tank set, drain field trenches dug (or spray field prepped on ATU), plumbing tied, distribution laid.
- County inspection. Authorized Agent inspects open trenches before cover-up. Any deficiencies fixed on the spot.
- Cover-up + restoration. Trenches back-filled, site restored to as-close-to-original as possible.
- Handover. Homeowner packet: permit + inspection report + tank as-built + operating instructions + (for ATU) maintenance contract.
Replacement questions we hear
How do I know if I need a full replacement or just a repair?
Full replacement is the honest answer when the tank is a pre-1980 steel that has rusted through, the drain field has failed repeatedly beyond recovery, the county has issued a non-compliance order, or multiple major components have failed in a short window. Everything else is usually a repair conversation first.
What does replacement cost in Beaumont?
Tank-only $4,500–$9,500. Drain field partial $3,500–$8,000. Full conventional $10,000–$18,000. Conventional-to-aerobic upgrade $14,000–$22,000+. Aerobic full replacement $12,000–$20,000.
How long does the whole replacement take?
Site eval + design 1 week. TCEQ permit 2–4 weeks. Excavation + install 3–6 days. County inspection + cover-up 1–2 days. Total: 5–8 weeks door to door for a straightforward job.
Can I keep using my system during the replacement?
Tank-only swap: 1–2 days without water use. Full system: usually 2–3 days without service, longer if soil conditions require the field to sit. We plan the sequence to minimise downtime.
Do I need a new permit for a like-for-like replacement?
Yes. Any TCEQ OSSF replacement requires a new permit through Jefferson County Environmental Health — even like-for-like. Requires updated site evaluation, soil test, and system design. That eval might change what the county will allow on the property.
Can the old tank be left in the ground?
No. TCEQ Chapter 285 requires decommissioned tanks to be removed or filled with soil, sand, or concrete slurry. Empty tanks left in place are a collapse hazard. Decommissioning is part of our replacement scope.
Scope a replacement
Call (409) 895-2078. Or use the callback form. Have the property address, current system type (conventional / aerobic / unknown), approximate age, and what has failed if you know.