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Septic System Installation in Longview & Gregg County

The digging is the short part. Almost all of the elapsed time is spent before anyone turns up with a machine.

The permit process as a sequence of gates Each stage of the on-site sewage permit in order along a track, with the stages that legally stop work until they are cleared marked as gates. The permit track, in order APPLICATION FROM GCHD SITE EVALUATION RS OR PE TECH INFO SHEET YOUR DESIGNER SUBMIT + FEE OWNER NAME COUNTY REVIEW GCHD AUTHORIZATION TO CONSTRUCT INSTALL CERT. INSTALLER INSPECTION BEFORE COVER NOTICE OF APPROVAL YOU MAY USE IT A GATE. WORK MAY NOT LAWFULLY CONTINUE PAST IT UNTIL IT IS SIGNED OFF.
Nothing here is optional and nothing here is quick. The stages marked as gates are the ones that hold up a closing or a build, and every one of them is waiting on somebody else's calendar rather than on you.

Installing in Gregg County: the ground, the office and the fees

USDA soil survey data for Gregg County rate about 149,000 of its roughly 176,000 acres “very limited” for septic absorption fields and none “not limited”. The two most widespread reasons are slow water movement (about 145,000 acres) and a saturated zone close to the surface (about 83,000 acres).

The Gregg County permit fee is $350 for a single-family home, conventional or professionally designed ($450 for commercial), and the one inspection happens before cover, on one working day’s notice.

County office: Gregg County Health Department, 405 East Marshall Avenue, Longview, TX 75601, (903) 237-2628.

Sources: USDA-NRCS Soil Data Access (SSURGO), septic tank absorption field ratings, queried 2026-10-23; Gregg County Health Department, OSSF permit checklist (2026); Gregg County: Septic Systems (program contact (903) 237-2628). Checked October 2026.

What happens, in order

Evaluation first (borings, water table, slope, setbacks; see what the evaluator is looking for), then a design drawn against it, then submission to Gregg County Health Department with the fee. Work starts only once the permit is issued, and the system is inspected before anything is covered. The final approval is what makes it lawful to use, and what a buyer’s lender will look for later. The full sequence, step by step, is on the permit page.

Sequence the house around the system, not the other way round

The most expensive mistake on a new build is placing the house, drive and outbuildings first, then finding the only workable field location is under one of them. Request a quote for the evaluation →

Who is allowed to do the work

Installation is licensed work. Using an uncertified installer is not a shortcut: it is an approval that never arrives, on a system you have already paid for.

Last reviewed September 23, 2026 against Gregg County Health Department and the Texas Commission on Environmental Quality published rules. How we research this site.