Clean Water Act discharge permit · NPDES TX0042129
WYMAN GORDON FORGINGS CYPRESS PLANT, Houston, TX: NPDES TX0042129 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 60Pollutants under a numeric limit
- 23Pollutants with an effluent exceedance
WYMAN GORDON FORGINGS CYPRESS PLANT, held by WYMAN-GORDON FORGINGS LP, holds NPDES permit TX0042129, which discharges to Unnamed Drainage Ditch, Hcfcdd U106. EPA’s file records it issued October 24, 2018 and expiring October 24, 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 | WYMAN GORDON FORGINGS CYPRESS PLANT |
|---|---|
| Permittee as filed | WYMAN-GORDON FORGINGS LP |
| NPDES ID | TX0042129 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | October 24, 2018 |
| Expiration date | October 24, 2023 |
| Address | Houston, TX 77095 |
| Receiving water | UNNAMED DRAINAGE DITCH, HCFCDD U106 |
| Subwatershed | Langham Creek (HUC 120401040201) |
| Other EPA IDs (FRS) | RCRA handler TXD008085763; ICIS-AIR source TX0000004820100002 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 62Pollutants on file
- 60Under a numeric limit
- 62With a violation of any kind
- 23With 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; the 60 with the most exceedances of 62 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| E. coli | 8 | 97 | 61 | March 31, 2026 | 99,999% over the limit |
| Oxygen demand, chem. [high level] [COD] | 4 | 120 | 55 | April 30, 2023 | 545% over the limit |
| Solids, total suspended | 7 | 106 | 40 | July 31, 2024 | 1,961% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 2 | 92 | 40 | July 31, 2024 | 1,126% over the limit |
| Flow, in conduit or thru treatment plant | 10 | 104 | 27 | June 30, 2017 | 290% over the limit |
| Oil & Grease | 4 | 95 | 25 | October 31, 2024 | 754% over the limit |
| Chromium, hexavalent [as Cr] | 2 | 51 | 17 | June 30, 2024 | 654% over the limit |
| Whole Effluent Toxicity [WET] - C. dubia | 2 | 14 | 14 | December 31, 2021 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 40 | 11 | March 31, 2019 | 590% over the limit |
| Oxygen, dissolved [DO] | 1 | 22 | 11 | July 31, 2025 | 71% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 61 | 9 | October 31, 2014 | 265% over the limit |
| Whole effluent toxicity | 1 | 66 | 8 | March 31, 2013 | 99,999% over the limit |
| Copper, total [as Cu] | 3 | 35 | 8 | May 31, 2026 | 248% over the limit |
| Whole Effluent Toxicity [WET] - P. promelas | 2 | 8 | 8 | December 31, 2021 | 100% over the limit |
| pH | 4 | 58 | 5 | May 31, 2025 | |
| Fluoride, total [as F] | 2 | 20 | 3 | July 31, 2025 | 677% over the limit |
| Manganese, total [as Mn] | 2 | 20 | 2 | August 31, 2013 | 47% over the limit |
| Cyanide, total [as CN] | 2 | 4 | 2 | December 31, 2025 | 33% over the limit |
| Nickel, total [as Ni] | 3 | 31 | 1 | February 28, 2023 | 177% over the limit |
| Mercury, total [as Hg] | 2 | 31 | 1 | February 28, 2007 | 3% over the limit |
| Zinc, total [as Zn] | 3 | 28 | 1 | August 31, 2004 | 17% over the limit |
| Aluminum, total [as Al] | 2 | 16 | 1 | September 30, 2022 | 9% over the limit |
| Chlorine, total residual | 6 | 1 | 1 | October 31, 2022 | 77% over the limit |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 34 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 34 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 34 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 34 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 32 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 32 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 32 | 0 | ||
| Lead, total [as Pb] | 3 | 31 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 30 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 30 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 30 | 0 | ||
| Chromium, total [as Cr] | 3 | 29 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 26 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 26 | 0 | ||
| Silver, total [as Ag] | 2 | 18 | 0 | ||
| Cyanide, free [amenable to chlorination] | 0 | 16 | 0 | ||
| Coliform, fecal general | 0 | 14 | 0 | ||
| Chloride [as Cl] | 2 | 10 | 0 | ||
| Solids, total dissolved | 2 | 10 | 0 | ||
| Conductivity | 3 | 9 | 0 | ||
| Sulphur, total elemental | 3 | 9 | 0 | ||
| Nitrogen, total [as N] | 3 | 9 | 0 | ||
| Nitrogen, nitrate total [as N] | 3 | 9 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 3 | 9 | 0 | ||
| Phosphorus, total [as P] | 3 | 9 | 0 | ||
| Calcium, dissolved [as Ca] | 3 | 9 | 0 | ||
| Calcium, total [as Ca] | 3 | 9 | 0 | ||
| Magnesium, dissolved [as Mg] | 3 | 9 | 0 | ||
| Magnesium, total [as Mg] | 3 | 9 | 0 | ||
| Sodium, total [as Na] | 3 | 9 | 0 | ||
| Sodium, dissolved [as Na] | 3 | 9 | 0 | ||
| Sodium adsorption ratio | 3 | 9 | 0 | ||
| Potassium, total [as K] | 3 | 9 | 0 | ||
| pH, in soil | 3 | 9 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 9 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 9 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 4 | 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 |
|---|---|---|
| May 29, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| May 31, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| June 28, 2017 | Reporting Violations - Improper/ Incorrect Reporting | EP6 |
| June 28, 2017 | Management Practice Violations - Improper Operation and Maintenance | EP6 |
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.