Clean Water Act discharge permit · NPDES CTPGP0004
HEMLOCKS RESERVOIR SYSTEM, Fairfield, CT: NPDES CTPGP0004 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
HEMLOCKS RESERVOIR SYSTEM, held by AQUARION WATER COMPANYc/o Stahl Holdings, LLC, holds NPDES permit CTPGP0004, which discharges to Cricker Brook. EPA’s file records it issued June 9, 2025 and expiring October 21, 2029. 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 HEMLOCKS RESERVOIR SYSTEM: its NPDES ID, its permit type and status, its dates, its address in Fairfield, Connecticut, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES CTPGP0004.
Identity
| Facility as filed | HEMLOCKS RESERVOIR SYSTEM |
|---|---|
| Permittee as filed | AQUARION WATER COMPANYc/o Stahl Holdings, LLC |
| NPDES ID | CTPGP0004 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 9, 2025 |
| Expiration date | October 21, 2029 |
| Issuing agency | CT DEEP |
| Address | Fairfield, CT 06824 |
| Receiving water | Cricker Brook |
| Subwatershed | Mill River-Frontal Long Island Sound (HUC 011000060302) |
| Other EPA IDs (FRS) | RCRA handler CTR000511329 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
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 CTPGP0004.
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 CTPGP0004.
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, CTPGP0004.
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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 CTPGP0004 there.
Nearby on the register
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- Every permit record in Connecticut, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.