How much does a septic system cost in Texas?

Short answer: pumping a tank usually runs $300–$700, and a brand-new system runs $6,300–$20,000 depending on the type. Use the free estimator below to narrow that down for your home — it takes about 30 seconds and needs no email address.

$300–$700

Septic tank pumping (per 1,000-gal tank)

$6,300–$20,000

New septic system installed (Texas)

$10,000–$20,000

New aerobic system installed

$200–$400/yr

Aerobic maintenance contract

Free septic cost estimator

Tank size

My system has a second tank that also needs pumping (common on larger or older systems) The tank lid is buried and will need digging to reach (no risers) This is an emergency / after-hours call (backup, overflow, alarm going off)

Your estimated range

Estimates are educational planning figures based on published Texas price guides — not a quote. Only a site visit produces a real price. See sources in the footer.

What affects the price?

Pumping

Tank size and count. Bigger tanks and two-tank systems take longer to pump and cost more to haul away.
Access. Buried lids without risers mean digging time. Installing risers once makes every future pumping cheaper.
Timing. Emergency and after-hours calls (backups, alarms) carry a premium over a scheduled visit.
How full it is. A neglected tank with a thick solids layer takes longer — most homes should pump every 3–5 years.

New installations

System type. Aerobic systems cost more upfront than conventional ones but are required in many Texas counties, near lakes, and on smaller lots.
Home size. Systems are sized by bedrooms. More bedrooms = a bigger tank and field.
Soil. Clay and rock slow the excavation and can require engineered designs, adding cost.
Permits and engineering. Texas installations require a permit and, for aerobic systems, a site evaluation/design — usually bundled into the installer's price, but ask.

Texas note: aerobic systems must be maintained by a licensed provider under contract, with periodic inspections reported to the county. Budget the $200–$400/year contract on top of any aerobic installation.

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