Clean Water Act discharge permit · NPDES TX0118745
MATHESON TRI-GAS WAXAHACHIE, Waxahachie, TX: NPDES TX0118745 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
MATHESON TRI-GAS WAXAHACHIE, held by MATHESON TRI-GAS INC, holds NPDES permit TX0118745, which discharges to Mustang Creek; Bardwell Reservior. EPA’s file records it issued February 7, 2017 and expiring December 1, 2021. 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 | MATHESON TRI-GAS WAXAHACHIE |
|---|---|
| Permittee as filed | MATHESON TRI-GAS INC |
| NPDES ID | TX0118745 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 7, 2017 |
| Expiration date | December 1, 2021 |
| Address | Waxahachie, TX 75165 |
| Receiving water | MUSTANG CREEK; BARDWELL RESERVIOR |
| Subwatershed | Mustang Creek-Bardwell Lake (HUC 120301090305) |
| SIC | 2813 – Industrial Gases |
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
- 11Pollutants on file
- 5Under a numeric limit
- 11With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 2 | 37 | 7 | July 31, 2023 | 2,576% over the limit |
| Solids, total suspended | 2 | 148 | 6 | November 30, 2022 | 673% over the limit |
| Chlorine, total residual | 4 | 121 | 6 | April 30, 2006 | 100% over the limit |
| pH | 2 | 25 | 2 | September 30, 2018 | |
| Sulfate | 0 | 2 | 2 | September 30, 2025 | 9% over the limit |
| Temperature, water deg. fahrenheit | 1 | 11 | 0 | ||
| Copper, total [as Cu] | 0 | 2 | 0 | ||
| Selenium, total [as Se] | 0 | 2 | 0 | ||
| Solids, total dissolved [TDS] | 0 | 2 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 0 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 1 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 16, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| April 25, 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.
Watch this permit
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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 TX0118745 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.