Clean Water Act discharge permit · NPDES CT0030287
ROCKY RIVER HYDROELETRIC STATION, New Milford, CT: NPDES CT0030287 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
ROCKY RIVER HYDROELETRIC STATION, held by FIRSTLIGHT CT HOUSATONIC LLC, holds NPDES permit CT0030287, which discharges to Housatonic River. EPA’s file records it issued October 26, 2010 and expiring October 31, 2015. 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.
Identity
| Facility as filed | ROCKY RIVER HYDROELETRIC STATION |
|---|---|
| Permittee as filed | FIRSTLIGHT CT HOUSATONIC LLC |
| NPDES ID | CT0030287 |
| 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 | October 26, 2010 |
| Expiration date | October 31, 2015 |
| Issuing agency | CT DEP |
| Address | New Milford, CT 06776 |
| Receiving water | HOUSATONIC RIVER |
| Subwatershed | Candlewood Lake (HUC 011000050601) |
| SIC | 4911 – Electric Services |
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
- 15Pollutants on file
- 15Under a numeric limit
- 15With a violation of any kind
- 4With 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 | 6 | 23 | 3 | January 31, 2022 | |
| Oil & Grease | 3 | 14 | 3 | June 30, 2020 | 112% over the limit |
| NOAEL Static 48Hr Acute D. pulex | 5 | 6 | 3 | July 31, 2017 | 36% over the limit |
| Copper, total [as Cu] | 3 | 10 | 1 | July 31, 2026 | 15% over the limit |
| Duration of discharge | 6 | 14 | 0 | ||
| Flow | 5 | 10 | 0 | ||
| Lead, total [as Pb] | 3 | 9 | 0 | ||
| Zinc, total [as Zn] | 3 | 9 | 0 | ||
| Temperature, water deg. fahrenheit | 3 | 8 | 0 | ||
| Flow rate | 3 | 7 | 0 | ||
| Flow, maximum during 24 hr period | 3 | 7 | 0 | ||
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 2 | 6 | 0 | ||
| Noel Statre 7Day Chronic Pimephales | 2 | 5 | 0 | ||
| Tetrachloroethylene | 3 | 4 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 5 | 3 | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 26, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 26, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 26, 2024 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| August 26, 2024 | Management Practice Violations - Failure to Maintain Records | ST6 |
| April 25, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| April 25, 2023 | Management Practice Violations - Failure to Maintain Records | ST6 |
| April 25, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| April 25, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| April 25, 2023 | Reporting Violations - Failure to Notify | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES CT0030287.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES CT0030287.
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, CT0030287.
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 CT0030287 there.
Nearby on the register
- Discharge permits in New Milford
- Every permit record in New Milford, A to Z
- Discharge permits in Connecticut
- Every permit record in Connecticut, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.