Clean Water Act discharge permit · NPDES CTCSW0023
PFIZER INC., Groton, CT: NPDES CTCSW0023 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
PFIZER INC., held by Pfizer Incorporated, holds NPDES permit CTCSW0023. EPA’s file records it issued May 3, 2021 and expiring March 29, 2023. 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.
What the register holds for PFIZER INC.: its NPDES ID, its permit type and status, its dates, its address in Groton, Connecticut, and 15 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES CTCSW0023.
Identity
| Facility as filed | PFIZER INC. |
|---|---|
| Permittee as filed | Pfizer Incorporated |
| NPDES ID | CTCSW0023 |
| 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 |
| Issued | May 3, 2021 |
| Expiration date | March 29, 2023 |
| Issuing agency | CT DEEP |
| Address | Groton, CT 06340 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Thames River-Frontal New London Harbor (HUC 011000030203) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 15Under a numeric limit
- 0With 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 |
|---|---|---|---|---|---|
| pH | 12 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 6 | 0 | 0 | ||
| Copper, total [as Cu] | 6 | 0 | 0 | ||
| Lead, total [as Pb] | 6 | 0 | 0 | ||
| Zinc, total [as Zn] | 6 | 0 | 0 | ||
| Chlorine, total residual | 6 | 0 | 0 | ||
| Specific conductance | 4 | 0 | 0 | ||
| Salinity | 4 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 4 | 0 | 0 | ||
| Iron, total [as Fe] | 4 | 0 | 0 | ||
| Noael Static 48Hr Acute Mysid. Bahia | 4 | 0 | 0 | ||
| NOAEL Static 48Hr Acute Menidia sp. | 4 | 0 | 0 | ||
| Alkalinity, total [as CaCO3] | 3 | 0 | 0 | ||
| Aluminum, total [as Al] | 2 | 0 | 0 | ||
| Flow | 2 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES CTCSW0023.
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 CTCSW0023.
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 CTCSW0023 there.
Nearby on the register
- Discharge permits in Groton
- Every permit record in Groton, A to Z
- Discharge permits in Connecticut
- Every permit record in Connecticut, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.