TEXAS · TCEQ REGION 08 · 13 COUNTIES
Aerobic septic systems in TCEQ Region 08 (San Angelo)
TCEQ Region 08 office (San Angelo)
622 S Oakes, Ste K, San Angelo TX 76903-7035
Main line: 325-655-9479
This office permits septic systems and takes maintenance reports for the 4 counties without a local authorized agent; the other 9 permit locally.
From TCEQ's regional office directory, read Oct 31, 2026.
TCEQ Region 08 (San Angelo) covers 13 Texas counties: Coke, Concho, Crockett, Irion, Kimble, Mason, McCulloch, Menard, Reagan, Schleicher, Sterling, Sutton and Tom Green.
9 of the 13 counties permit on-site sewage facilities through a local authorized agent (a county). The other 4 have none, so the TCEQ Region 08 (San Angelo) office (325-655-9479) permits systems and takes maintenance reports there.
Reports are due within 14 days after the test (30 TAC §285.7(e)(1)(B)). No county in this region has published how maintenance providers submit the report, so every county page here says so rather than guessing.
158 aerobic systems were authorized across the region from 2015 to 2025. In 2025, 14 of the region’s 401 on-site sewage facility authorizations were aerobic (3.5%).
Counties in TCEQ Region 08 (San Angelo)
| COUNTY | PERMITTING AUTHORITY | HOW TO FILE | AEROBIC 2015–25 | AEROBIC 2025 | MPs |
|---|---|---|---|---|---|
| Coke | Coke County | Not confirmed | 1 | 0 | 1 |
| Concho | Concho County | Not confirmed | 0 | 0 | 0 |
| Crockett | TCEQ Region 08 - San Angelo | Not confirmed | 0 | 0 | 0 |
| Irion | TCEQ Region 08 - San Angelo | Not confirmed | 0 | 0 | 0 |
| Kimble | Kimble County | Not confirmed | 18 | 3 | 0 |
| Mason | Mason County | Not confirmed | 40 | 3 | 1 |
| McCulloch | Mcculloch County | Not confirmed | 13 | 3 | 0 |
| Menard | Menard County | Not confirmed | 10 | 0 | 0 |
| Reagan | TCEQ Region 08 - San Angelo | Not confirmed | 0 | 0 | 0 |
| Schleicher | Schleicher County | Not confirmed | 0 | 0 | 1 |
| Sterling | TCEQ Region 08 - San Angelo | Not confirmed | 0 | 0 | 0 |
| Sutton | Sutton County | Not confirmed | 0 | 0 | 0 |
| Tom Green | Tom Green County | Not confirmed | 76 | 5 | 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 | 351 | 2 | 0 |
| 2016 | 288 | 1 | 0 |
| 2017 | 297 | 5 | 0 |
| 2018 | 304 | 6 | 0 |
| 2019 | 363 | 11 | 1 |
| 2020 | 489 | 19 | 0 |
| 2021 | 505 | 19 | 1 |
| 2022 | 491 | 29 | 1 |
| 2023 | 604 | 18 | 1 |
| 2024 | 419 | 28 | 2 |
| 2025 | 401 | 13 | 1 |
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 08 (San Angelo)?
13 Texas counties: Coke, Concho, Crockett, Irion, Kimble, Mason, McCulloch, Menard, Reagan, Schleicher, Sterling, Sutton and Tom Green.
Who permits aerobic septic systems in TCEQ Region 08 (San Angelo)?
9 of the 13 counties permit on-site sewage facilities through a local authorized agent (a county). The other 4 have none, so the TCEQ Region 08 (San Angelo) office (325-655-9479) permits systems and takes maintenance reports there.
How many aerobic septic systems were permitted in the San Angelo region?
158 aerobic systems were authorized across the region from 2015 to 2025. In 2025, 14 of the region’s 401 on-site sewage facility authorizations were aerobic (3.5%).
When is an aerobic maintenance report due in TCEQ Region 08 (San Angelo)?
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.