Licensed, insured, and local. Same-day scheduling, upfront pricing, and technicians who know Ellis County systems.
Glenn Heights straddles the Dallas–Ellis county line along I-35E in the 75154 ZIP, a fast-growing bedroom community where new subdivisions are on city sewer but older acreage properties and the undeveloped southern stretches still run their own systems. Most of the ground here is Blackland Prairie clay that will not percolate, which is why aerobic spray systems dominate the septic side of town, with a handful of older conventional tanks surviving on the larger lots.
Tank pumping on both sides of the county line, aerobic repair and aerator replacement, the required three-times-a-year maintenance inspections, new installs on the undeveloped southern acreage, drain-field repair, and emergency backup and alarm calls.
The county line matters in Glenn Heights. Whether your OSSF permit runs through Dallas County or Ellis County depends on which side of the line your parcel sits, and the two offices have different processes and fees. On the Ellis side the Ellis County Development Department reviews the permit; on the Dallas side it is Dallas County’s environmental health program. We check the parcel before we file anything. OSSF permits and aerobic transfers here go through the Ellis County permitting authority.
Related services: Septic Tank Pumping, Aerobic Septic Repair, Septic Inspections
Yes. Most of the acreage systems around Glenn Heights are exactly what our crews service.
We prioritize active alarms and backups for same-day dispatch when a crew is available.
Tell us what is going on and we will respond the same day with honest, upfront pricing. Serving Midlothian and the Glenn Heights area along the Ellis and Dallas county line, TX.
Glenn Heights grew about 28 percent between 2020 and 2025, from 15,819 to roughly 20,327 (U.S. Census Bureau), which makes it one of the fastest-growing cities on the Dallas County line. Roughly two-thirds of the city land is in Dallas County and one-third in Ellis County. The city has historically had more than half its land undeveloped, so new construction and acreage on the southern Ellis County side is where the septic work is.
Glenn Heights sits right on the Blackland Prairie transition. USDA mapping shows Austin silty clay across about 43 percent of the city and Houston Black clay across about 21 percent, with Eddy-Stephen making up another 13 percent. Austin Chalk sits under the higher west side and grades into Taylor group marl heading east toward I-35E. Practically, that means the west side of the city tends to run into shallow chalk and the east side into deep slow clay, and both Austin and Houston Black are rated very limited for a conventional absorption field. Houston Black is the Texas state soil and it cracks wide in summer, which is hard on tanks and lines as well as on drainage.
Glenn Heights is not a TCEQ authorized agent, so the permit comes from the county, and which county depends on your address. Dallas County Health and Human Services, Environmental Health Division names Glenn Heights directly in its coverage and handles the Dallas County portion, including inside the city limits. The Ellis County Department of Development in Waxahachie handles the Ellis County portion. Since the city line and the county line do not match up, we confirm the correct office by address before filing anything.
These are specific to Glenn Heights. For statewide rules, pumping intervals and current North Texas price ranges, see our septic cost guide and the Ellis County service area page.
It depends which side of the county line your lot is on, and the city line does not follow it. Dallas County Health and Human Services Environmental Health names Glenn Heights directly in its coverage area and handles the northern portion. The Ellis County Department of Development handles the southern portion. Glenn Heights itself is not an authorized agent.
Possibly. The whole city sits in ZIP 75154, and the USPS preferred city name for that ZIP is Red Oak. Plenty of Glenn Heights addresses show as Red Oak in mail and in online forms. For permitting, the city limits and county line are what matter, not the ZIP.
Austin Chalk. The higher ground on the west side has Austin and Eddy-Stephen soils sitting relatively close to chalk bedrock, so depth becomes the design limit. Heading east toward I-35E it grades into deeper Houston Black clay, where slow percolation is the limit instead. Same city, two different design problems.
Some of it. The city provides sewer service, but more than half the city land has historically been undeveloped and the Ellis County side backs up to unincorporated acreage. New builds outside the sewered footprint go on private systems. Confirm the utility situation on any lot before you buy.