Clean Water Act discharge permit · NPDES TX0077178
FORT BEND COUNTY MUD 25 WWTP, Sugar Land, TX: NPDES TX0077178 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 56Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
FORT BEND COUNTY MUD 25 WWTP, held by FORT BEND COUNTY MUD 25, holds NPDES permit TX0077178, which discharges to Red Gully, Upper Oyster Creek, Braz. EPA’s file records it issued April 22, 2019 and expiring April 22, 2024. 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 25 WWTP |
|---|---|
| Permittee as filed | FORT BEND COUNTY MUD 25 |
| NPDES ID | TX0077178 |
| 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 | April 22, 2019 |
| Expiration date | April 22, 2024 |
| Address | Sugar Land, TX 77498 |
| Receiving water | RED GULLY, UPPER OYSTER CREEK, BRAZ |
| Subwatershed | Upper Oyster Creek (HUC 120402050100) |
| 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
- 58Pollutants on file
- 56Under a numeric limit
- 54With 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 | 32 | 11 | February 29, 2016 | 279% over the limit |
| Chlorine, total residual | 2 | 21 | 5 | April 30, 2015 | 15% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 27 | 3 | March 31, 2015 | 20% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 26 | 2 | January 31, 2011 | 307% over the limit |
| E. coli | 2 | 7 | 1 | April 30, 2011 | 47% over the limit |
| Chloride [as Cl] | 0 | 39 | 0 | ||
| Solids, total suspended | 3 | 24 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 19 | 0 | ||
| pH | 3 | 19 | 0 | ||
| Arsenic, dry weight | 5 | 18 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 18 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 18 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 18 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 18 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 18 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 18 | 0 | ||
| Selenium, dry weight | 3 | 13 | 0 | ||
| Copper, dry weight | 3 | 13 | 0 | ||
| Cadmium, dry weight | 3 | 13 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 13 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 13 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 13 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 13 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 12 | 0 | ||
| Coliform, fecal general | 0 | 11 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 8 | 0 | ||
| Level of pathogen requirements achieved | 2 | 7 | 0 | ||
| Description of pathogen option used | 2 | 7 | 0 | ||
| Vector attraction reduction alternative used | 2 | 7 | 0 | ||
| Nitrate nitrogen, dry weight | 3 | 6 | 0 | ||
| Nickel, total [as Ni] | 2 | 6 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 6 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 6 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 5 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 5 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 5 | 0 | ||
| Annual amt of sludge incinerated | 1 | 5 | 0 | ||
| Annual sludge production, total | 1 | 5 | 0 | ||
| Annual amount of sludge land applied | 1 | 5 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 5 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 5 | 0 | ||
| Annual amt sludge transported interstate | 1 | 5 | 0 | ||
| Fecal coliform | 1 | 4 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 4 | 0 | ||
| Salmonella | 1 | 4 | 0 | ||
| Pollutant table from 503.13 | 1 | 4 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 3 | 0 | ||
| Boundary areas | 1 | 3 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 0 | 0 | ||
| Whole effluent toxicity | 2 | 0 | 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 |
|---|---|---|
| June 5, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| March 7, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| August 1, 2019 | 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.