Clean Water Act discharge permit · NPDES TX0074233
FORT BEND COUNTY MUD 23 WWTP, Fresno, TX: NPDES TX0074233 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 57Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
FORT BEND COUNTY MUD 23 WWTP, held by FORT BEND COUNTY MUD 23, holds NPDES permit TX0074233, which discharges to Drainage Ditch, Long Point Ck, Middle Oyster Ck. EPA’s file records it issued October 12, 2018 and expiring October 12, 2023. 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 | FORT BEND COUNTY MUD 23 WWTP |
|---|---|
| Permittee as filed | FORT BEND COUNTY MUD 23 |
| NPDES ID | TX0074233 |
| 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 | October 12, 2018 |
| Expiration date | October 12, 2023 |
| Address | Fresno, TX 77545 |
| Receiving water | DRAINAGE DITCH, LONG POINT CK, MIDDLE OYSTER CK |
| Subwatershed | Middle Oyster Creek (HUC 120402050200) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 58Pollutants on file
- 57Under a numeric limit
- 25With a violation of any kind
- 11With 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 |
|---|---|---|---|---|---|
| Whole Effluent Toxicity [WET] - C. dubia | 2 | 31 | 21 | March 31, 2026 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 30 | 12 | July 31, 2026 | 726% over the limit |
| Whole effluent toxicity | 0 | 16 | 12 | June 30, 2018 | 60% over the limit |
| E. coli | 2 | 7 | 7 | July 31, 2024 | 1,113% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 24 | 6 | July 31, 2026 | 118% over the limit |
| Solids, total suspended | 3 | 23 | 5 | July 31, 2026 | 80% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 17 | 5 | September 30, 2007 | 15% over the limit |
| Chlorine, total residual | 2 | 31 | 3 | December 31, 2021 | 67% over the limit |
| Nitrogen, nitrate total [as N] | 3 | 2 | 2 | October 31, 2013 | 17% over the limit |
| pH | 3 | 15 | 1 | June 30, 2008 | |
| Oxygen, dissolved [DO] | 1 | 7 | 1 | October 31, 2010 | 5% over the limit |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 19 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 18 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 17 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 15 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 13 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 11 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 11 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 9 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 9 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 8 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 7 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 7 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 6 | 0 | ||
| Arsenic, dry weight | 5 | 0 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 0 | 0 | ||
| Selenium, dry weight | 3 | 0 | 0 | ||
| Copper, dry weight | 3 | 0 | 0 | ||
| Cadmium, dry weight | 3 | 0 | 0 | ||
| Solids, total dissolved | 3 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 0 | 0 | ||
| Nickel, total [as Ni] | 2 | 0 | 0 | ||
| Level of pathogen requirements achieved | 2 | 0 | 0 | ||
| Description of pathogen option used | 2 | 0 | 0 | ||
| Vector attraction reduction alternative used | 2 | 0 | 0 | ||
| Fecal coliform | 1 | 0 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 0 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 0 | 0 | ||
| Annual amt of sludge incinerated | 1 | 0 | 0 | ||
| Annual sludge production, total | 1 | 0 | 0 | ||
| Annual amount of sludge land applied | 1 | 0 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 0 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 0 | 0 | ||
| Annual amt sludge transported interstate | 1 | 0 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 0 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 0 | 0 | ||
| Boundary areas | 1 | 0 | 0 | ||
| Salmonella | 1 | 0 | 0 | ||
| Pollutant table from 503.13 | 1 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 14, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| May 15, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| February 23, 2023 | 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 September 15, 2026.