TEXAS · TCEQ REGION 03 · 30 COUNTIES
Aerobic septic systems in TCEQ Region 03 (Abilene)
TCEQ Region 03 office (Abilene)
1977 Industrial Blvd, Abilene TX 79602-7833
Main line: 325-698-9674
This office permits septic systems and takes maintenance reports for the 14 counties without a local authorized agent; the other 16 permit locally.
From TCEQ's regional office directory, read Oct 31, 2026.
TCEQ Region 03 (Abilene) covers 30 Texas counties: Archer, Baylor, Brown, Callahan, Clay, Coleman, Comanche, Cottle, Eastland, Fisher, Foard, Hardeman, Haskell, Jack, Jones, Kent, Knox, Mitchell, Montague, Nolan, Runnels, Scurry, Shackelford, Stephens, Stonewall, Taylor, Throckmorton, Wichita, Wilbarger and Young.
16 of the 30 counties permit on-site sewage facilities through a local authorized agent (a county). The other 14 have none, so the TCEQ Region 03 (Abilene) office (325-698-9674) permits systems and takes maintenance reports there.
Reports are due within 14 days after the test (30 TAC §285.7(e)(1)(B)). The filing channel is confirmed for 0 of the 30 counties, and taken from the county’s own published pages for 1 more. The rest have not published it, and their pages say so.
2,754 aerobic systems were authorized across the region from 2015 to 2025. In 2025, 405 of the region’s 1,360 on-site sewage facility authorizations were aerobic (29.8%).
Counties in TCEQ Region 03 (Abilene)
| COUNTY | PERMITTING AUTHORITY | HOW TO FILE | AEROBIC 2015–25 | AEROBIC 2025 | MPs |
|---|---|---|---|---|---|
| Archer | Archer County | Not confirmed | 4 | 0 | 0 |
| Baylor | Baylor County | Not confirmed | 0 | 0 | 0 |
| Brown | Brown County | Not confirmed | 481 | 65 | 8 |
| Callahan | Callahan County | Not confirmed | 104 | 11 | 2 |
| Clay | Clay County | Not confirmed | 3 | 0 | 0 |
| Coleman | Coleman County | Not confirmed | 10 | 0 | 0 |
| Comanche | Comanche County | Not confirmed | 84 | 18 | 1 |
| Cottle | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Eastland | TCEQ Region 03 - Abilene | Not confirmed | 64 | 10 | 2 |
| Fisher | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Foard | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Hardeman | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Haskell | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Jack | Jack County | Not confirmed | 62 | 35 | 2 |
| Jones | Jones County | Not confirmed | 47 | 12 | 1 |
| Kent | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Knox | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Mitchell | Mitchell County | Not confirmed | 0 | 0 | 0 |
| Montague | Montague County | Not confirmed | 354 | 84 | 1 |
| Nolan | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Runnels | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 1 |
| Scurry | Scurry County | Not confirmed | 1 | 0 | 0 |
| Shackelford | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Stephens | TCEQ Region 03 - Abilene | Not confirmed | 53 | 4 | 3 |
| Stonewall | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Taylor | Taylor County | paper · From county pages | 1,096 | 118 | 12 |
| Throckmorton | Throckmorton County | Not confirmed | 5 | 1 | 0 |
| Wichita | Wichita County | Not confirmed | 295 | 30 | 3 |
| Wilbarger | TCEQ Region 03 - Abilene | Not confirmed | 0 | 0 | 0 |
| Young | Young County | Not confirmed | 91 | 17 | 3 |
MPs are licensed OSSF maintenance providers whose license mailing address is in the county. Each provider is counted once, where it is based; many also work in neighboring counties.
Permits across the region, 2015–2025
| YEAR | ALL OSSF | SURFACE (SPRAY) | DRIP |
|---|---|---|---|
| 2015 | 620 | 57 | 14 |
| 2016 | 678 | 91 | 14 |
| 2017 | 858 | 138 | 10 |
| 2018 | 896 | 135 | 6 |
| 2019 | 972 | 236 | 6 |
| 2020 | 1,029 | 222 | 14 |
| 2021 | 1,317 | 289 | 17 |
| 2022 | 1,546 | 401 | 26 |
| 2023 | 1,334 | 331 | 22 |
| 2024 | 1,160 | 303 | 17 |
| 2025 | 1,360 | 377 | 28 |
Authorizations to Construct from the eleven annual TCEQ “Types of Systems Installed” reports, summed over the region’s counties. Surface irrigation and drip both require aerobic pretreatment. The statewide dataset has the CSV, and the 2025 report compares the regions.
The rules are the same in every county
- · An aerobic system with surface application is tested every four months (30 TAC §285.91(4), Table IV). How often systems are inspected.
- · Each report goes to the permitting authority and the owner within 14 days of the test (30 TAC §285.7(e)(1)(B)). The deadline rule.
- · A new aerobic system starts with a two-year service policy (30 TAC §285.7(c)). After that the owner renews the maintenance contract or, for a single-family home, may maintain the system themselves where local rules allow (§285.7(d)(4)). What the contract must say.
Common questions
Which counties are in TCEQ Region 03 (Abilene)?
30 Texas counties: Archer, Baylor, Brown, Callahan, Clay, Coleman, Comanche, Cottle, Eastland, Fisher, Foard, Hardeman, Haskell, Jack, Jones, Kent, Knox, Mitchell, Montague, Nolan, Runnels, Scurry, Shackelford, Stephens, Stonewall, Taylor, Throckmorton, Wichita, Wilbarger and Young.
Who permits aerobic septic systems in TCEQ Region 03 (Abilene)?
16 of the 30 counties permit on-site sewage facilities through a local authorized agent (a county). The other 14 have none, so the TCEQ Region 03 (Abilene) office (325-698-9674) permits systems and takes maintenance reports there.
How many aerobic septic systems were permitted in the Abilene region?
2,754 aerobic systems were authorized across the region from 2015 to 2025. In 2025, 405 of the region’s 1,360 on-site sewage facility authorizations were aerobic (29.8%).
When is an aerobic maintenance report due in TCEQ Region 03 (Abilene)?
Within 14 days after the date the test is performed, everywhere in Texas. 30 TAC §285.7(e)(1)(B) requires the report to go to the permitting authority and to the system owner.
The other fifteen TCEQ regions
Data as of Oct 5, 2026, from the TCEQ authorized-agent register, the OSSF license register, the annual “Types of Systems Installed” reports and the counties’ own pages. How we research and check this. Not legal advice. Verify with your permitting authority.