Clean Water Act discharge permit · NPDES MA0004561
HOLLINGSWORTH & VOSE, West Groton, MA: NPDES MA0004561 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 21Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
HOLLINGSWORTH & VOSE, held by HOLLINGSWORTH & VOSE CO, holds NPDES permit MA0004561, which discharges to Squannacook River. EPA’s file records it issued March 31, 2011 and expiring May 31, 2016. 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 | HOLLINGSWORTH & VOSE |
|---|---|
| Permittee as filed | HOLLINGSWORTH & VOSE CO |
| NPDES ID | MA0004561 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 31, 2011 |
| Expiration date | May 31, 2016 |
| Address | West Groton, MA 01472 |
| Receiving water | SQUANNACOOK RIVER |
| Subwatershed | Witch Brook-Squannacook River (HUC 010700040302) |
| SIC | 2621 – Paper Mills |
| Other EPA IDs (FRS) | RCRA handler MAD001006378; ICIS-AIR source MA0000002512100086 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 24Pollutants on file
- 21Under a numeric limit
- 10With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Zinc, total [as Zn] | 2 | 52 | 38 | March 31, 2026 | 10,025% over the limit |
| pH | 3 | 36 | 28 | December 31, 2024 | |
| Copper, total [as Cu] | 0 | 29 | 25 | January 31, 2025 | 437% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 18 | 12 | January 31, 2025 | 76% over the limit |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 5 | 2 | June 30, 2003 | 99,999% over the limit |
| Aluminum, total [as Al] | 0 | 8 | 0 | ||
| Solids, total suspended | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Lead, total [as Pb] | 0 | 5 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 1 | 4 | 0 | ||
| Alkalinity, total [as CaCO3] | 1 | 0 | 0 | ||
| Solids, total | 1 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 0 | 0 | ||
| Nickel, total recoverable | 1 | 0 | 0 | ||
| Zinc, total recoverable | 1 | 0 | 0 | ||
| Aluminum, total recoverable | 1 | 0 | 0 | ||
| Cadmium, total recoverable | 1 | 0 | 0 | ||
| Lead, total recoverable | 1 | 0 | 0 | ||
| Copper, total recoverable | 1 | 0 | 0 | ||
| Chlorine, total residual | 1 | 0 | 0 | ||
| Total Organic Carbon % Removal | 1 | 0 | 0 | ||
| Specific Conductance | 1 | 0 | 0 | ||
| Solids, total dissolved | 1 | 0 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MA0004561.
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 MA0004561 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.