Clean Water Act discharge permit · NPDES TX0070211
ZAPATA COUNTY WATER WORKS WWTP, Zapata, TX: NPDES TX0070211 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 48Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
ZAPATA COUNTY WATER WORKS WWTP, held by ZAPATA COUNTY, holds NPDES permit TX0070211, which discharges to International Falcon Reservoir. EPA’s file records it issued December 8, 2015 and expiring September 1, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ZAPATA COUNTY WATER WORKS WWTP |
|---|---|
| Permittee as filed | ZAPATA COUNTY |
| NPDES ID | TX0070211 |
| 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 | December 8, 2015 |
| Expiration date | September 1, 2020 |
| Address | Zapata, TX 78076 |
| Receiving water | INTERNATIONAL FALCON RESERVOIR |
| Subwatershed | Arroyo Cabeza de Vaca-Falcon Reservoir (HUC 130800030603) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 48Pollutants on file
- 48Under a numeric limit
- 47With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 3 | 165 | 81 | July 31, 2026 | 510% over the limit |
| Solids, total suspended | 3 | 149 | 47 | August 31, 2013 | 179% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 133 | 28 | April 30, 2026 | 126% over the limit |
| E. coli | 2 | 63 | 21 | September 30, 2025 | 865% over the limit |
| Oxygen, dissolved [DO] | 1 | 40 | 10 | June 30, 2016 | 100% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 74 | 6 | May 31, 2022 | 92,025% over the limit |
| pH | 3 | 74 | 0 | ||
| Phosphorus, total [as P] | 6 | 72 | 0 | ||
| Chlorine, total residual | 2 | 70 | 0 | ||
| Nitrate nitrogen, dry weight | 6 | 57 | 0 | ||
| Sulfate, total [as SO4] | 3 | 57 | 0 | ||
| Solids, total dissolved | 3 | 57 | 0 | ||
| Arsenic, dry weight | 5 | 29 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 29 | 0 | ||
| Selenium, dry weight | 3 | 17 | 0 | ||
| Copper, dry weight | 3 | 17 | 0 | ||
| Cadmium, dry weight | 3 | 17 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 17 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 17 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 17 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 17 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 17 | 0 | ||
| Conductivity | 3 | 15 | 0 | ||
| Nitrogen, total [as N] | 3 | 15 | 0 | ||
| Potassium, total [as K] | 3 | 15 | 0 | ||
| pH, in soil | 3 | 15 | 0 | ||
| Nitrogen, nitrate total [as N] | 3 | 12 | 0 | ||
| Nickel, total [as Ni] | 2 | 12 | 0 | ||
| Level of pathogen requirements achieved | 2 | 11 | 0 | ||
| Description of pathogen option used | 2 | 11 | 0 | ||
| Vector attraction reduction alternative used | 2 | 11 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 3 | 9 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 6 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 6 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 6 | 0 | ||
| Annual amt of sludge incinerated | 1 | 6 | 0 | ||
| Annual sludge production, total | 1 | 6 | 0 | ||
| Annual amount of sludge land applied | 1 | 6 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 6 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 6 | 0 | ||
| Annual amt sludge transported interstate | 1 | 6 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 6 | 0 | ||
| Boundary areas | 1 | 6 | 0 | ||
| Fecal coliform | 1 | 5 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 5 | 0 | ||
| Salmonella | 1 | 5 | 0 | ||
| Pollutant table from 503.13 | 1 | 5 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 18, 2019 | 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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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 TX0070211 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.