Clean Water Act discharge permit · NPDES TXR05GP91
SUMIKA TEXAS IPA PLANT, Baytown, TX: NPDES TXR05GP91 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
SUMIKA TEXAS IPA PLANT, held by Sumika Semiconductor Materials Texas Inc., holds NPDES permit TXR05GP91. EPA’s file records it issued February 3, 2025 and expiring August 13, 2026. 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.
What the register holds for SUMIKA TEXAS IPA PLANT: its NPDES ID, its permit type and status, its dates, its address in Baytown, Texas. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR05GP91.
Identity
| Facility as filed | SUMIKA TEXAS IPA PLANT |
|---|---|
| Permittee as filed | Sumika Semiconductor Materials Texas Inc. |
| NPDES ID | TXR05GP91 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | February 3, 2025 |
| Expiration date | August 13, 2026 |
| Address | Baytown, TX 77523 |
| Subwatershed | Cedar Point Lateral-Cedar Bayou (HUC 120402030106) |
| SIC | 3674 – Semiconductors And Related Devices |
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
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR05GP91.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES TXR05GP91.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, TXR05GP91.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 TXR05GP91 there.
Nearby on the register
- Discharge permits in Baytown
- Every permit record in Baytown, A to Z
- Discharge permits in Texas
- Every permit record in Texas, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.