HOLLINGSWORTH & VOSE CO

NPDES permit MA0004561 · Major NON-POTW · administratively continued, expires 2026-08-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2026-08-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

8values over a limit
2required values missing, on 1 form(s)
7of 28 forms filed late

Last period with anything received: 2026-08-31. Most often over: Zinc, total [as Zn] (8).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (41)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 240 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 480 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.3 SU all year
001pHDAILY MX report only all year
001Solids, total suspendedMO AVG <= 570 lb/d all year
001Solids, total suspendedDAILY MX <= 1140 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Copper, total [as Cu]MO AVG <= 17.1 ug/L all year
001Copper, total [as Cu]DAILY MX <= 21.4 ug/L all year
001Copper, total [as Cu]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Nickel, total recoverableDAILY MX report only all year
001Zinc, total [as Zn]MO AVG <= 152 ug/L all year
001Zinc, total [as Zn]DAILY MX <= 152 ug/L all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total recoverableDAILY MX report only all year
001Aluminum, total recoverableDAILY MX report only all year
001Aluminum, total [as Al]DAILY MX report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Lead, total recoverableDAILY MX report only all year
001Copper, total recoverableDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG <= 3 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 4 MGD all year
001LC50 Static 48Hr Acute Ceriodaphnia dubiaMINIMUM >= 100 % all year
001LC50 Static 48Hr Acute Pimephales promelasMINIMUM >= 100 % all year
001NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaMINIMUM >= 60 % all year
001Noel Statre 7Day Chronic PimephalesMINIMUM >= 60 % all year
PFASPerfluorooctanoic acid (PFOA)DAILY MX report only all year
PFASPerfluoroheptanoic acid (PFHpA)DAILY MX report only all year
PFASPerfluorononanoic acid (PFNA)DAILY MX report only all year
PFASPerfluorodecanoic acid (PFDA)DAILY MX report only all year
PFASPerfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
PFASPerfluorooctanesulfonic acid (PFOS)DAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states