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Hollingsworth & Vose Co

Paper Mills, major discharger, West Groton, Massachusetts. NPDES permit MA0004561 expired Aug 31, 2026; its limits still apply. Last 12 months: over a limit 13 times (last September 2026), 2 required values missing, 2 of 28 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (12 values), outfall 001 form Q quarterly (1 value), outfall 001 form T quarterly (12 values), outfall 001 form TA quarterly (10 values), outfall PFAS form E quarterly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 8 of 28 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 13 values over a limit
Period endingParameterReportedLimitOver by
December 2025Zinc, total [as Zn], daily maximum204.5 ug/L≤ 152 ug/L35%
January 2026Zinc, total [as Zn], daily maximum15390 ug/L≤ 152 ug/L10025%
January 2026Zinc, total [as Zn], daily maximum15390 ug/L≤ 152 ug/L10025%
January 2026Zinc, total [as Zn], monthly average3915 ug/L≤ 152 ug/L2476%
January 2026Zinc, total [as Zn], monthly average3915 ug/L≤ 152 ug/L2476%
February 2026Zinc, total [as Zn], daily maximum1563 ug/L≤ 152 ug/L928%
February 2026Zinc, total [as Zn], monthly average448.2 ug/L≤ 152 ug/L195%
March 2026Zinc, total [as Zn], daily maximum324.7 ug/L≤ 152 ug/L114%
September 2026LC50 Static 48Hr Acute Ceriodaphnia dubia, minimum6.25 %≥ 100 %94%
September 2026LC50 Static 48Hr Acute Pimephales promelas, minimum12.1 %≥ 100 %88%
September 2026NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia, minimum6.25 %≥ 60 %90%
September 2026Noel Statre 7Day Chronic Pimephales, minimum12.5 %≥ 60 %79%
September 2026Zinc, total [as Zn], daily maximum467.1 ug/L≤ 152 ug/L207%

Limits in force (41)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 240 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 480 lb/dall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 8.3 SUall year001
pHdaily maximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 570 lb/dall year001
Solids, total suspendeddaily maximum≤ 1140 lb/dall year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year001
Copper, total [as Cu]monthly average≤ 17.1 ug/Lall year001
Copper, total [as Cu]daily maximum≤ 21.4 ug/Lall year001
Copper, total [as Cu]daily maximumreport only (mg/L)all year001
Iron, total [as Fe]daily maximumreport only (ug/L)all year001
Lead, total [as Pb]daily maximumreport only (mg/L)all year001
Nickel, total [as Ni]daily maximumreport only (mg/L)all year001
Nickel, total recoverabledaily maximumreport only (mg/L)all year001
Zinc, total [as Zn]monthly average≤ 152 ug/Lall year001
Zinc, total [as Zn]daily maximum≤ 152 ug/Lall year001
Zinc, total [as Zn]daily maximumreport only (mg/L)all year001
Zinc, total recoverabledaily maximumreport only (mg/L)all year001
Aluminum, total recoverabledaily maximumreport only (mg/L)all year001
Aluminum, total [as Al]daily maximumreport only (mg/L)all year001
Cadmium, total recoverabledaily maximumreport only (mg/L)all year001
Lead, total recoverabledaily maximumreport only (mg/L)all year001
Copper, total recoverabledaily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly average≤ 3 MGDall year001
Flow, in conduit or thru treatment plantdaily maximum≤ 4 MGDall year001
LC50 Static 48Hr Acute Ceriodaphnia dubiaminimum≥ 100 %all year001
LC50 Static 48Hr Acute Pimephales promelasminimum≥ 100 %all year001
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaminimum≥ 60 %all year001
Noel Statre 7Day Chronic Pimephalesminimum≥ 60 %all year001
Perfluorooctanoic acid (PFOA)daily maximumreport only (ng/L)all yearPFAS
Perfluoroheptanoic acid (PFHpA)daily maximumreport only (ng/L)all yearPFAS
Perfluorononanoic acid (PFNA)daily maximumreport only (ng/L)all yearPFAS
Perfluorodecanoic acid (PFDA)daily maximumreport only (ng/L)all yearPFAS
Perfluorohexanesulfonic acid (PFHxS)daily maximumreport only (ng/L)all yearPFAS
Perfluorooctanesulfonic acid (PFOS)daily maximumreport only (ng/L)all yearPFAS

How strict are these limits?

Cited limits by parameter: Massachusetts's rules and the federal ones.

Same industry: the 6 Paper and Allied Products permits in Massachusetts.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MA0004561 · MCP: https://passage-data.com/mcp