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
- 0Inspections on file
- 1Formal enforcement actions
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.
CITY OF MARLIN WWTP, Falls County, Texas: Individual permit TX0021725, held by MARLIN, CITY OF; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued April 3, 2014, term to December 1, 2018; discharges to BRAZOS RIVER SEG NO. 1242.
- pH: 3 limits, 169 violations of any kind, 127 effluent exceedances, latest February 28, 2026.
- BOD, 5-day, 20 deg. C: 3 limits, 132 violations of any kind, 89 effluent exceedances, latest February 28, 2026, largest 110% over the limit.
- E. coli: 2 limits, 82 violations of any kind, 71 effluent exceedances, latest February 28, 2026, largest 896% over the limit.
- Solids, total suspended: 2 limits, 57 violations of any kind, 25 effluent exceedances, latest October 31, 2025, largest 192% over the limit.
- Oxygen, dissolved [DO]: 1 limit, 27 violations of any kind, 5 effluent exceedances, latest August 31, 2011, largest 88% over the limit.
- Flow, in conduit or thru treatment plant: 3 limits, 54 violations of any kind, 2 effluent exceedances, latest April 30, 2013, largest 47,050% over the limit.
- NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 11 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 5 limits, 10 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 10 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex: 0 limits, 10 violations of any kind, 0 effluent exceedances.
- LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas: 0 limits, 10 violations of any kind, 0 effluent exceedances.
- NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas: 0 limits, 10 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits, 9 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 9 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Copper, dry weight: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits, 5 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Polychlorinated biphenyls [PCBs]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual sludge production, total: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Fecal coliform: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Annual whole sludge application rate: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Boundary areas: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Salmonella: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #1: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #2: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- May 19, 2026: State CWA Penalty AO (State), $22,400 state or local penalty.
- 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).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 102 were issued before TX0021725. MARLIN, CITY OF holds 3 permits in Texas.
Other permits held by MARLIN, CITY OF
- MARLIN WWTP, Marlin: TX0124621, issued January 5, 2011
- CITY OF MARLIN WWTP, Falls County: TX0146811, issued March 9, 2026
Coverages issued nearest TX0021725
- February 28, 2014: CITY OF HACKBERRY WWTP, Denton County, TX0103276, held by HACKBERRY, CITY OF
- February 28, 2014: CROSS CREEK RANCH WWTP, Fulshear, TX0129119, held by FORT BEND CO MUD 169 AND CITY OF FULSHEAR
- March 7, 2014: FORT BEND COUNTY MUD 142 WWTP, Fort Bend County, TX0125555, held by FORT BEND COUNTY MUD 142
- March 24, 2014: GREENWOOD PLANT, Corpus Christi, TX0047074, held by CORPUS CHRISTI, CITY OF
- March 31, 2014: NORTH ALAMO WSC REGIONAL WWTP, Donna, TX0134902, held by NORTH ALAMO WSC
- April 3, 2014: CITY OF GRANGER WWTP, Granger, TX0071030, held by GRANGER, CITY OF
- April 24, 2014: TPWD ABILENE STATE PARK, Taylor County, TX0032581, held by TEXAS PARKS & WILDLIFE DEPARTM
- May 14, 2014: CITY OF HAMLIN WWTP, Hamlin, TX0023159, held by HAMLIN, CITY OF
- May 22, 2014: SOUTHEAST WATER RECLAMATION PLANT, Lubbock, TX0106071, held by LUBBOCK, CITY OF
- May 30, 2014: PECAN BRANCH WWTP, Georgetown, TX0114006, held by GEORGETOWN, CITY OF
CITY OF MARLIN WWTP among its neighbors
EPA’s permit file holds 4 discharge permits in the Perry Creek-Brazos River subwatershed (HUC 120701010111), TX0021725 among them. Its county holds 14, 1 of them major permits; TX0021725 is a major permit.
Other permits in the Perry Creek-Brazos River subwatershed (HUC 120701010111)
- CAMERON ELECTRONICS, Marlin: TXRNEBP59, minor permit, permit term to August 13, 2026
- CITY OF MARLIN WWTP, Falls County: TX0146811, minor permit, discharging to Brazos River Above Navasota River, permit term to March 9, 2031
- SHRIEVE CHEMICAL SERVICES, Marlin: TXR05GJ48, minor permit, permit term to August 13, 2026
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) |
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 |
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 |
Inspections
EPA’s inspection file holds no inspection for NPDES TX0021725.
Formal enforcement and penalties
1 formal actions, 1 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
| Date | What EPA recorded | Agency | Federal penalty | State or local penalty |
|---|---|---|---|---|
| May 19, 2026 | State CWA Penalty AO | State | $22,400 |
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES TX0021725.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.