Clean Water Act discharge permit · NPDES TX0126675
FORT BEND COUNTY MUD 58 WWTP, Fort Bend County, TX: NPDES TX0126675 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 24Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
FORT BEND COUNTY MUD 58 WWTP, held by FORT BEND COUNTY MUD 58, holds NPDES permit TX0126675, which discharges to Unnamed Ditch; Buffalo Bayou Unclassified. EPA’s file records it issued March 10, 2022 and expiring March 10, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | FORT BEND COUNTY MUD 58 WWTP |
|---|---|
| Permittee as filed | FORT BEND COUNTY MUD 58 |
| NPDES ID | TX0126675 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 10, 2022 |
| Expiration date | March 10, 2025 |
| Address | Fort Bend County, TX 77494 |
| Receiving water | UNNAMED DITCH; BUFFALO BAYOU UNCLASSIFIED |
| Subwatershed | Little Prong-Buffalo Bayou (HUC 120401040103) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 25Pollutants on file
- 24Under a numeric limit
- 21With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 3 | 93 | 12 | April 30, 2016 | 246% over the limit |
| E. coli, colony forming units [CFU] | 2 | 12 | 12 | April 30, 2023 | 2,357% over the limit |
| Solids, total suspended | 3 | 89 | 8 | December 31, 2009 | 710% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 62 | 2 | June 30, 2020 | 9% over the limit |
| Chlorine, total residual | 2 | 53 | 1 | October 31, 2014 | 13% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 87 | 0 | ||
| pH | 2 | 50 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 25 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 6 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 6 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 6 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 5 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 5 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 5 | 0 | ||
| E. coli | 0 | 5 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 4 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 10, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| November 16, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| April 7, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| December 19, 2017 | 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 TX0126675 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.