Clean Water Act discharge permit · NPDES TX0055492
CITY OF SOMERVILLE WWTP, Somerville, TX: NPDES TX0055492 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 37Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
CITY OF SOMERVILLE WWTP, held by SOMERVILLE, CITY OF, holds NPDES permit TX0055492, which discharges to Thompson Creek;Yegua Creek. EPA’s file records it issued October 4, 2019 and expiring October 4, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CITY OF SOMERVILLE WWTP |
|---|---|
| Permittee as filed | SOMERVILLE, CITY OF |
| NPDES ID | TX0055492 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | October 4, 2019 |
| Expiration date | October 4, 2024 |
| Address | Somerville, TX 77879 |
| Receiving water | THOMPSON CREEK;YEGUA CREEK |
| Subwatershed | Wolf Creek-Yegua Creek (HUC 120701020309) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 37Pollutants on file
- 37Under a numeric limit
- 36With a violation of any kind
- 5With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 3 | 83 | 6 | September 30, 2017 | 18% over the limit |
| E. coli | 2 | 4 | 4 | February 28, 2025 | 1,133% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 53 | 2 | October 31, 2008 | 47% over the limit |
| Oxygen, dissolved [DO] | 1 | 19 | 2 | October 31, 2021 | 55% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 35 | 1 | March 31, 2007 | 70% over the limit |
| pH | 3 | 40 | 0 | ||
| Chlorine, total residual | 2 | 34 | 0 | ||
| Arsenic, dry weight | 5 | 27 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 27 | 0 | ||
| Selenium, dry weight | 3 | 15 | 0 | ||
| Copper, dry weight | 3 | 15 | 0 | ||
| Cadmium, dry weight | 3 | 15 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 15 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 15 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 15 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 15 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 15 | 0 | ||
| Nickel, total [as Ni] | 2 | 12 | 0 | ||
| Level of pathogen requirements achieved | 2 | 11 | 0 | ||
| Description of pathogen option used | 2 | 11 | 0 | ||
| Vector attraction reduction alternative used | 2 | 11 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 10 | 0 | ||
| Annual amt of sludge incinerated | 1 | 10 | 0 | ||
| Annual sludge production, total | 1 | 10 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 10 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 10 | 0 | ||
| Annual amt sludge transported interstate | 1 | 10 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 9 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 9 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 9 | 0 | ||
| Annual amount of sludge land applied | 1 | 8 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 6 | 0 | ||
| Boundary areas | 1 | 6 | 0 | ||
| Fecal coliform | 1 | 5 | 0 | ||
| Salmonella | 1 | 5 | 0 | ||
| Pollutant table from 503.13 | 1 | 5 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 4, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| February 27, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| March 17, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID TX0055492 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.