A failing system doesn't fix itself, and pumping only buys time. If your drainfield is done, here's what a proper, permitted replacement looks like — and what it typically costs in the Tyler–Longview area.
One slow drain is a plumbing issue. Several of these together usually mean the drainfield has lost its ability to absorb and treat effluent — and that is fixed by replacement, not by pumping.
A licensed evaluator confirms what's failed — tank, field, or both — and evaluates the soil for the new design. Sometimes the tank can be reused; the field almost never can. This step also catches whether today's rules require a different system type than the one being replaced.
Yes — a replacement needs a new OSSF permit through TCEQ's authorized agent, just like a new install. The new system is designed to current standards and your home's current bedroom count, which may differ from the original 1980s design.
The old system is taken out of service (tanks are pumped and properly abandoned or removed), the new system goes in — usually in a fresh area of the lot — and the county inspects before backfill. Most households can stay in the home during the work.
| Replacement type | Typical range |
|---|---|
| Conventional replacement (tank + new drainfield, where soil allows) | $6,300–$10,000 |
| Aerobic replacement (required when soil/lot conditions rule out conventional) | $10,000–$20,000 |
| Site evaluation & permitting (part of the project total) | $1,500–$5,000 |
The most common surprise: a home whose original conventional system "worked for 30 years" being required to go aerobic on replacement, because current soil evaluation standards are stricter than when the original was grandfathered in. The evaluator's findings control — get them before you budget. See the cost guide for details.
A failing OSSF is one of the most common rural real-estate deal-stoppers in East Texas — it affects financing, insurance and closing timelines. A permitted replacement with paperwork in hand removes the issue entirely. If you're mid-transaction, say so in the form notes — timeline matters and installers plan for it.
Tell us what's happening with the current system and a licensed local installer will call you back with next steps and a real price.