Clean Water Act discharge permit · NPDES TX0138665
SIERRA VISTA WEST WWTP, Iowa Colony, TX: NPDES TX0138665 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
SIERRA VISTA WEST WWTP, held by IOWA COLONY, CITY OF, holds NPDES permit TX0138665, which discharges to Amenity Lk;Drainage Ditch;Unnamed Trib. EPA’s file records it issued July 30, 2019 and expiring July 30, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SIERRA VISTA WEST WWTP |
|---|---|
| Permittee as filed | IOWA COLONY, CITY OF |
| NPDES ID | TX0138665 |
| 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 | July 30, 2019 |
| Expiration date | July 30, 2024 |
| Address | Iowa Colony, TX 77583 |
| Receiving water | AMENITY LK;DRAINAGE DITCH;UNNAMED TRIB |
| Subwatershed | Mustang Bayou (HUC 120402040400) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 8Under a numeric limit
- 8With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 2 | 22 | 8 | July 31, 2026 | 26% over the limit |
| Solids, total suspended | 3 | 21 | 0 | ||
| Nitrogen, ammonia total [as N] | 3 | 21 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 21 | 0 | ||
| pH | 2 | 14 | 0 | ||
| Chlorine, total residual | 2 | 14 | 0 | ||
| E. coli | 2 | 14 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 7 | 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 |
|---|---|---|
| December 21, 2023 | 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 TX0138665 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.