Clean Water Act discharge permit · NPDES PA0245224
EISAI, Exton, PA: NPDES PA0245224 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
EISAI, held by EISAI INC, holds NPDES permit PA0245224, which discharges to Pine Creek. EPA’s file records it issued January 13, 2021 and expiring January 31, 2026. 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 | EISAI |
|---|---|
| Permittee as filed | EISAI INC |
| NPDES ID | PA0245224 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 13, 2021 |
| Expiration date | January 31, 2026 |
| Issuing agency | State Environmental Organization |
| Address | Exton, PA 19341 |
| Receiving water | Pine Creek |
| Subwatershed | Pickering Creek (HUC 020402031003) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 1With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Oxygen demand, chem. [high level] [COD] | 6 | 1 | 0 | ||
| pH | 6 | 0 | 0 | ||
| Solids, total suspended | 6 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 6 | 0 | 0 | ||
| Phosphorus, total [as P] | 6 | 0 | 0 | ||
| Iron, total [as Fe] | 6 | 0 | 0 | ||
| Lead, total [as Pb] | 6 | 0 | 0 | ||
| Zinc, total [as Zn] | 6 | 0 | 0 | ||
| Aluminum, total [as Al] | 6 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES PA0245224.
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 PA0245224.
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 PA0245224 there.
Nearby on the register
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- Every permit record in Exton, A to Z
- Discharge permits in Pennsylvania
- Every permit record in Pennsylvania, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.