Clean Water Act discharge permit · NPDES TX0129364
CITY OF CASTROVILLE WWTP, Castroville, TX: NPDES TX0129364 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
CITY OF CASTROVILLE WWTP, held by CASTROVILLE, CITY OF, holds NPDES permit TX0129364, which discharges to Medina River Below Medina Diversion Lake. EPA’s file records it issued May 8, 2020 and expiring May 8, 2025.
CITY OF CASTROVILLE WWTP, Castroville, Texas: Individual permit TX0129364, held by CASTROVILLE, CITY OF; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued May 8, 2020, term to May 8, 2025; discharges to Medina River Below Medina Diversion Lake.
- Phosphorus, total [as P]: 3 limits, 37 violations of any kind, 25 effluent exceedances, latest June 30, 2025, largest 344% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 3 limits, 14 violations of any kind, 2 effluent exceedances, latest January 31, 2026, largest 45% over the limit.
- E. coli: 2 limits, 9 violations of any kind, 1 effluent exceedance, latest May 31, 2025, largest 506% over the limit.
- Solids, total suspended: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Nitrogen, ammonia total [as N]: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- pH: 2 limits, 9 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- Chlorine, total residual: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 0 limits, 5 violations of any kind, 0 effluent exceedances.
- Chromium, sludge, total, dry weight [as Cr]: 0 limits, 5 violations of any kind, 0 effluent exceedances.
- Oxygen, dissolved [DO]: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Copper, dry weight: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Polychlorinated biphenyls [PCBs]: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Annual sludge production, total: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Fecal coliform: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Boundary areas: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Salmonella: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- December 15, 2023: Permit Violations - Violation Specified in Comment (ST6).
- May 16, 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; 1,368 were issued before TX0129364.
Coverages issued nearest TX0129364
- May 4, 2020: CITY OF ELECTRA WWTP, Electra, TX0026964, held by ELECTRA, CITY OF
- May 4, 2020: DOSHIER FARM WWTP, Temple, TX0047651, held by TEMPLE, CITY OF
- May 8, 2020: CITY OF FREEPORT CENTRAL WWTP, Freeport, TX0033332, held by FREEPORT, CITY OF
- May 8, 2020: TEMPLE BELTON REGIONAL WWTP, Bell County, TX0058378, held by TEMPLE, CITY OF AND BELTON, CITY OF
- May 8, 2020: CITYOF ODEM WWTP, Odem, TX0126641, held by ODEM, CITY OF
- May 8, 2020: MEYER RANCH MUD WWTP, City Of New Braunfels, TX0135976, held by MEYER RANCH MUD OF COMAL COUNTY
- May 8, 2020: CITY OF RICHMOND SWTP, Richmond, TX0137600, held by RICHMOND, CITY OF
- May 14, 2020: PALACIOS WWTP, Palacios, TX0023051, held by PALACIOS, CITY OF
- May 14, 2020: CITY OF CARRIZO SPRINGS WWTP, Carrizo Springs, TX0025976, held by CARRIZO SPRINGS, CITY OF
- May 14, 2020: CITY OF FLORESVILLE WWTP, Floresville, TX0056227, held by FLORESVILLE, CITY OF
CITY OF CASTROVILLE WWTP among its neighbors
EPA’s permit file holds 36 discharge permits in the Flat Creek-Medina River subwatershed (HUC 121003020501), TX0129364 among them. Its county holds 139, 1 of them major permits; TX0129364 is a minor permit.
Other permits in the Flat Creek-Medina River subwatershed (HUC 121003020501)
- 271 MATERIALS, Rio Medina: TXR05GF53, minor permit, permit term to August 13, 2026
- ALSATIAN OAKS, Castroville: TXR1565PK, minor permit, discharging to MEDINA RIVER BELOW MEDINA DIVERSION LAKE 1903, permit term to March 4, 2028
- ALSATIAN OAKS, Castroville: TXR1577TF, minor permit, discharging to FLAT CREEK, permit term to March 4, 2028
- ALSATIAN OAKS - UNIT 1, Castroville: TXR1567NS, minor permit, discharging to MEDINA RIVER BELOW MEDINA DIVERSION LAKE, permit term to March 4, 2028
- ALSATIAN OAKS UNITS 4 & 5, Castroville: TXR1571VF, minor permit, discharging to FLAT CREEK WHICH RUNS INTO MEDINA RIVER, permit term to March 4, 2028
- AT&T COMMUNICATION LINE FIBER CABLE INSTALL - A05DFSD 26TX34, Castroville: TXR1542ZB, minor permit, discharging to UNNAMED TRIBUTARY, permit term to March 4, 2028
- AT&T COMMUNICATION LINES INSTALL-A05DFSD 26TX34, Lacoste: TXR1541ZB, minor permit, discharging to 7 UNNAMED TRIBUTARIES, permit term to March 4, 2028
- CASTLEROCK COMMUNITIES - MEGANS LANDING, Castroville Texas: TXR1598VC, minor permit, discharging to SAN GERONIMO CREEK, permit term to March 4, 2028
- COUNTRY VILLAGE ESTATES, Castroville: TXR1511OZ, minor permit, discharging to MEDINA RIVER BELOW MEDINA DIVERSION LAKE, permit term to March 4, 2028
- COUNTRY VILLAGE ESTATES, Castroville: TXR1552UA, minor permit, discharging to MEDINA RIVER, permit term to March 4, 2028
Identity
| Facility as filed | CITY OF CASTROVILLE WWTP |
|---|---|
| Permittee as filed | CASTROVILLE, CITY OF |
| NPDES ID | TX0129364 |
| 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 | May 8, 2020 |
| Expiration date | May 8, 2025 |
| Address | Castroville, TX 78009 |
| Receiving water | Medina River Below Medina Diversion Lake |
| Subwatershed | Flat Creek-Medina River (HUC 121003020501) |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 38Pollutants on file
- 9Under a numeric limit
- 38With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 3 | 37 | 25 | June 30, 2025 | 344% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 14 | 2 | January 31, 2026 | 45% over the limit |
| E. coli | 2 | 9 | 1 | May 31, 2025 | 506% over the limit |
| Solids, total suspended | 3 | 12 | 0 | ||
| Nitrogen, ammonia total [as N] | 3 | 12 | 0 | ||
| pH | 2 | 9 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 8 | 0 | ||
| Chlorine, total residual | 2 | 8 | 0 | ||
| Arsenic, dry weight | 0 | 5 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 0 | 5 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 4 | 0 | ||
| Selenium, dry weight | 0 | 3 | 0 | ||
| Copper, dry weight | 0 | 3 | 0 | ||
| Cadmium, dry weight | 0 | 3 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 0 | 3 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 0 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 0 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 3 | 0 | ||
| Nickel, total [as Ni] | 0 | 2 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 0 | 2 | 0 | ||
| Toxicity characteristic leaching procedure | 0 | 2 | 0 | ||
| Ann. amt sludge disposed by other method | 0 | 2 | 0 | ||
| Annual amt of sludge incinerated | 0 | 2 | 0 | ||
| Annual sludge production, total | 0 | 2 | 0 | ||
| Annual amount of sludge land applied | 0 | 2 | 0 | ||
| Annual amt. sludge disposed surface unit | 0 | 2 | 0 | ||
| Annual amt sludge disposed in landfill | 0 | 2 | 0 | ||
| Annual amt sludge transported interstate | 0 | 2 | 0 | ||
| Level of pathogen requirements achieved | 0 | 2 | 0 | ||
| Description of pathogen option used | 0 | 2 | 0 | ||
| Vector attraction reduction alternative used | 0 | 2 | 0 | ||
| Fecal coliform | 0 | 1 | 0 | ||
| Unit w/liner/leachate collection system | 0 | 1 | 0 | ||
| Compliance w/part 258 sludge requirement | 0 | 1 | 0 | ||
| Boundary areas | 0 | 1 | 0 | ||
| Salmonella | 0 | 1 | 0 | ||
| Pollutant table from 503.13 | 0 | 1 | 0 |
Inspections, violations and enforcement
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 15, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| May 16, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES TX0129364.
Formal enforcement and penalties
0 formal actions, 0 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.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES TX0129364.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.