Clean Water Act discharge permit · NPDES TX0021725
CITY OF MARLIN WWTP, Falls County, TX: NPDES TX0021725 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 52Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
CITY OF MARLIN WWTP, held by MARLIN, CITY OF, holds NPDES permit TX0021725, which discharges to Brazos River Seg No. 1242. EPA’s file records it issued April 3, 2014 and expiring December 1, 2018. 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 | CITY OF MARLIN WWTP |
|---|---|
| Permittee as filed | MARLIN, CITY OF |
| NPDES ID | TX0021725 |
| 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 3, 2014 |
| Expiration date | December 1, 2018 |
| Address | Falls County, TX 76661 |
| Receiving water | BRAZOS RIVER SEG NO. 1242 |
| Subwatershed | Perry Creek-Brazos River (HUC 120701010111) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 56Pollutants on file
- 52Under a numeric limit
- 54With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| pH | 3 | 169 | 127 | February 28, 2026 | |
| BOD, 5-day, 20 deg. C | 3 | 132 | 89 | February 28, 2026 | 110% over the limit |
| E. coli | 2 | 82 | 71 | February 28, 2026 | 896% over the limit |
| Solids, total suspended | 2 | 57 | 25 | October 31, 2025 | 192% over the limit |
| Oxygen, dissolved [DO] | 1 | 27 | 5 | August 31, 2011 | 88% over the limit |
| Flow, in conduit or thru treatment plant | 3 | 54 | 2 | April 30, 2013 | 47,050% over the limit |
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 0 | 12 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 11 | 0 | ||
| Arsenic, dry weight | 5 | 10 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 10 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 10 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 10 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 10 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 10 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 10 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 10 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 0 | 10 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 0 | 10 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 0 | 10 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 9 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 9 | 0 | ||
| Selenium, dry weight | 3 | 6 | 0 | ||
| Copper, dry weight | 3 | 6 | 0 | ||
| Cadmium, dry weight | 3 | 6 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 6 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 6 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 6 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 6 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 5 | 0 | ||
| Vector attraction reduction alternative used | 2 | 4 | 0 | ||
| Level of pathogen requirements achieved | 2 | 3 | 0 | ||
| Description of pathogen option used | 2 | 3 | 0 | ||
| Nickel, total [as Ni] | 2 | 2 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 2 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 2 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 2 | 0 | ||
| Annual amt of sludge incinerated | 1 | 2 | 0 | ||
| Annual sludge production, total | 1 | 2 | 0 | ||
| Annual amount of sludge land applied | 1 | 2 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 2 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 2 | 0 | ||
| Annual amt sludge transported interstate | 1 | 2 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 2 | 0 | ||
| Pollutant table from 503.13 | 1 | 2 | 0 | ||
| Fecal coliform | 1 | 1 | 0 | ||
| Annual whole sludge application rate | 1 | 1 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 1 | 0 | ||
| Boundary areas | 1 | 1 | 0 | ||
| Salmonella | 1 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 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 |
|---|---|---|
| February 12, 2024 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| February 13, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| December 6, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| February 2, 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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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.