Clean Water Act discharge permit · NPDES TX0122823
OAK CREST MHP WWTP, Brazoria County, TX: NPDES TX0122823 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 38Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
OAK CREST MHP WWTP, held by MANVEL UTILITIES LIMITED PARTNERSHIP, holds NPDES permit TX0122823, which discharges to Mustang Bayou;Persimmon Bayou;New Bayou;Choc Bay. EPA’s file records it issued February 28, 2019 and expiring February 28, 2024. 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 | OAK CREST MHP WWTP |
|---|---|
| Permittee as filed | MANVEL UTILITIES LIMITED PARTNERSHIP |
| NPDES ID | TX0122823 |
| 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 28, 2019 |
| Expiration date | February 28, 2024 |
| Address | Brazoria County, TX 77578 |
| Receiving water | MUSTANG BAYOU;PERSIMMON BAYOU;NEW BAYOU;CHOC BAY |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mustang Bayou (HUC 120402040400) |
| 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
- 38Pollutants on file
- 38Under a numeric limit
- 37With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 3 | 62 | 22 | April 30, 2025 | 774% over the limit |
| E. coli | 2 | 27 | 7 | June 30, 2025 | 1,113% over the limit |
| Solids, total suspended | 3 | 45 | 5 | January 31, 2024 | 51% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 33 | 5 | September 30, 2015 | 113% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 40 | 0 | ||
| pH | 3 | 27 | 0 | ||
| Chlorine, total residual | 2 | 26 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 13 | 0 | ||
| Arsenic, dry weight | 5 | 9 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 9 | 0 | ||
| Nickel, total [as Ni] | 2 | 6 | 0 | ||
| Level of pathogen requirements achieved | 2 | 4 | 0 | ||
| Description of pathogen option used | 2 | 4 | 0 | ||
| Vector attraction reduction alternative used | 2 | 4 | 0 | ||
| Selenium, dry weight | 3 | 3 | 0 | ||
| Copper, dry weight | 3 | 3 | 0 | ||
| Cadmium, dry weight | 3 | 3 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 3 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 3 | 0 | ||
| Fecal coliform | 1 | 3 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 3 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 3 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 3 | 0 | ||
| Annual sludge production, total | 1 | 3 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 3 | 0 | ||
| Boundary areas | 1 | 3 | 0 | ||
| Salmonella | 1 | 3 | 0 | ||
| Annual amt of sludge incinerated | 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 | 1 | 0 | ||
| Pollutant table from 503.13 | 1 | 1 | 0 | ||
| Annual whole sludge application rate | 1 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 12, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| February 10, 2022 | 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.