Clean Water Act discharge permit · NPDES TX0020311
GALVESTON COUNTY MUD 12 WWTP, Bayou Vista, TX: NPDES TX0020311 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 37Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
GALVESTON COUNTY MUD 12 WWTP, held by GALVESTON COUNTY MUNICIPAL DISTRICT NO. 12, holds NPDES permit TX0020311, which discharges to Man-Made Canal; Highland Bayou; West Bay. EPA’s file records it issued October 17, 2018 and expiring October 17, 2023. 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 | GALVESTON COUNTY MUD 12 WWTP |
|---|---|
| Permittee as filed | GALVESTON COUNTY MUNICIPAL DISTRICT NO. 12 |
| NPDES ID | TX0020311 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | October 17, 2018 |
| Expiration date | October 17, 2023 |
| Address | Bayou Vista, TX 77563 |
| Receiving water | MAN-MADE CANAL; HIGHLAND BAYOU; WEST BAY |
| Subwatershed | Dickinson Bayou (HUC 120402040200) |
| 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
- 37Pollutants on file
- 37Under a numeric limit
- 36With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 3 | 36 | 18 | October 31, 2024 | 200% over the limit |
| Enterococci | 2 | 15 | 7 | July 31, 2023 | 1,440% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 14 | 2 | August 31, 2017 | 29% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 19 | 1 | August 31, 2008 | 985% over the limit |
| Chlorine, total residual | 2 | 13 | 1 | February 28, 2023 | 35% over the limit |
| pH | 3 | 14 | 0 | ||
| Arsenic, dry weight | 5 | 7 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 7 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 6 | 0 | ||
| Nickel, total [as Ni] | 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 | ||
| Level of pathogen requirements achieved | 2 | 3 | 0 | ||
| Description of pathogen option used | 2 | 3 | 0 | ||
| Vector attraction reduction alternative used | 2 | 3 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 2 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 2 | 0 | ||
| Boundary areas | 1 | 2 | 0 | ||
| Fecal coliform | 1 | 1 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 1 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 1 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 1 | 0 | ||
| Annual amt of sludge incinerated | 1 | 1 | 0 | ||
| Annual sludge production, total | 1 | 1 | 0 | ||
| Annual amount of sludge land applied | 1 | 1 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 1 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 1 | 0 | ||
| Annual amt sludge transported interstate | 1 | 1 | 0 | ||
| Salmonella | 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 |
|---|---|---|
| November 19, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| January 11, 2021 | 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 TX0020311 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.