Clean Water Act discharge permit · NPDES TX0123528
MALLARD POINT WWTP, Greenville, TX: NPDES TX0123528 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
MALLARD POINT WWTP, held by MALLARD POINT WWTP LLC, holds NPDES permit TX0123528, which discharges to Lake Tawakoni. EPA’s file records it issued September 9, 2021 and expiring September 9, 2026. 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 | MALLARD POINT WWTP |
|---|---|
| Permittee as filed | MALLARD POINT WWTP LLC |
| NPDES ID | TX0123528 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 9, 2021 |
| Expiration date | September 9, 2026 |
| Address | Greenville, TX 75453 |
| Receiving water | Lake Tawakoni |
| Subwatershed | Caney Creek-Cowleech Fork Sabine River (HUC 120100010104) |
| SIC | 4952 – Sewerage Systems |
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
- 43Pollutants on file
- 8Under a numeric limit
- 43With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 3 | 241 | 160 | July 31, 2026 | 23,653% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 156 | 78 | July 31, 2021 | 830% over the limit |
| Oxygen, dissolved [DO] | 1 | 53 | 26 | June 30, 2025 | 100% over the limit |
| E. coli | 2 | 74 | 24 | March 31, 2026 | 1,820% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 58 | 20 | July 31, 2026 | 23,567% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 154 | 19 | July 31, 2026 | 9,582% over the limit |
| Chlorine, total residual | 2 | 62 | 5 | December 31, 2020 | 120% over the limit |
| pH | 2 | 61 | 3 | October 31, 2022 | |
| Flow, in conduit or thru treatment plant | 2 | 69 | 0 | ||
| Phosphorus, total [as P] | 0 | 33 | 0 | ||
| Conductivity | 0 | 27 | 0 | ||
| Nitrogen, total [as N] | 0 | 27 | 0 | ||
| Potassium, total [as K] | 0 | 27 | 0 | ||
| pH, in soil | 0 | 27 | 0 | ||
| Arsenic, dry weight | 0 | 15 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 0 | 15 | 0 | ||
| Selenium, dry weight | 0 | 9 | 0 | ||
| Copper, dry weight | 0 | 9 | 0 | ||
| Cadmium, dry weight | 0 | 9 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 0 | 9 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 0 | 9 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 0 | 9 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 9 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 9 | 0 | ||
| Nickel, total [as Ni] | 0 | 6 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 0 | 6 | 0 | ||
| Toxicity characteristic leaching procedure | 0 | 6 | 0 | ||
| Level of pathogen requirements achieved | 0 | 6 | 0 | ||
| Description of pathogen option used | 0 | 6 | 0 | ||
| Vector attraction reduction alternative used | 0 | 6 | 0 | ||
| Ann. amt sludge disposed by other method | 0 | 4 | 0 | ||
| Annual amt of sludge incinerated | 0 | 4 | 0 | ||
| Annual sludge production, total | 0 | 4 | 0 | ||
| Annual amount of sludge land applied | 0 | 4 | 0 | ||
| Annual amt. sludge disposed surface unit | 0 | 4 | 0 | ||
| Annual amt sludge disposed in landfill | 0 | 4 | 0 | ||
| Annual amt sludge transported interstate | 0 | 4 | 0 | ||
| Fecal coliform | 0 | 3 | 0 | ||
| Unit w/liner/leachate collection system | 0 | 3 | 0 | ||
| Compliance w/part 258 sludge requirement | 0 | 3 | 0 | ||
| Boundary areas | 0 | 3 | 0 | ||
| Salmonella | 0 | 3 | 0 | ||
| Pollutant table from 503.13 | 0 | 3 | 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 |
|---|---|---|
| July 11, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| July 2, 2018 | 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 October 14, 2026.