Septic System Cost in Greenville, TX

Why can't we just publish a price list?

Because septic is not a catalog product. Two houses on the same street can need very different systems depending on soil, lot layout, and how far the tanks have to sit from the well or the property line. Anyone quoting a firm price sight-unseen is either padding the number to cover the unknowns or leaving things out that will show up as change orders later. We would rather earn the visit and give you a real number.

Aerobic vs conventional: the biggest cost driver in Hunt County

Most of Hunt County sits on Blackland Prairie clay — dense, slow-draining soil that fails a standard percolation test. When soil will not accept effluent fast enough, TCEQ rules require secondary treatment, which in residential context means an aerobic treatment unit (ATU) with spray or drip disposal. Aerobic systems have more components (aerator, chlorinator, spray heads or drip line, control panel) than a conventional gravity drain field, and they cost more to install and maintain. A conventional system is possible where soils allow, and it is meaningfully cheaper both up front and over the life of the system — but the soil evaluation makes that decision, not preference. See aerobic septic systems.

What actually drives the number on your quote?

• Soil type and perc rate — determines whether you can use a conventional drain field or need aerobic with spray or drip.
• Household size and daily flow — a two-bedroom home and a five-bedroom home need very different tank and field capacity.
• Tank size and configuration — trash tank plus aerobic chambers plus a pump tank versus a single conventional tank.
• Disposal area size and layout — how much yard the spray field or drain field needs, and how far it sits from the house.
• Site access and prep — trees, rock, slope, tight lots, and how easily equipment can reach the work.
• Setbacks — from your water well, the neighbor's well, property lines, and any surface water.
• TCEQ / Hunt County OSSF permitting — site evaluation, licensed design, application, and final inspection.
• Replacement vs new build — tear-out and abandonment of an old system adds work.

Does living near Lake Tawakoni change the cost?

Often yes. Properties near Lake Tawakoni have tighter TCEQ setback requirements from surface water and from neighboring wells, and many lots simply do not have room for a full spray field. That can push a design toward drip disposal or a low pressure dose system, both of which add components. Small lakefront lots and cabins-turned-year-round-homes are the two situations we see push most often outside the normal range. See our Lake Tawakoni service area.

How does the TCEQ / Hunt County permit process work?

1. Site and soil evaluation by a Texas licensed site evaluator.
2. System design by a Registered Professional Sanitarian or Professional Engineer.
3. OSSF permit application submitted to Hunt County Environmental Health.
4. Installation by a licensed installer within the permit terms.
5. Final inspection and issuance of the permit to operate.
6. For aerobic systems, an ongoing maintenance contract kept on file with the county.

Permit fees are set by the county and vary by system type. We roll all of it into one turnkey quote so you have one number and one point of contact. See septic installation.

What about repairs and pumping — do those need a site visit too?

Pumping we can quote over the phone once we know tank size, location, and access. Repairs almost always need eyes on the system, because "the alarm is going off" can mean a small float or a full drain field problem, and we would rather find the real cause than sell you a rebuild you did not need. See septic repair and septic pumping.

How do I get a real number for my property?

Call (430) 251-3852 or submit the form. A licensed local pro will schedule a site visit, walk the property with you, and give you a written quote that lays out exactly what is included. No obligation, no charge for the quote.