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NPDES MA0100552 · Clean Water Act

LYNN REGIONAL W P C F, Lynn, MA: NPDES MA0100552 discharge permit, effluent exceedances, inspections, penalties

LYNN REGIONAL W P C F, Lynn, Massachusetts: Individual permit MA0100552; Publicly owned treatment works; Administratively continued; issued May 31, 2000, term to July 31, 2005; discharges to LYNN HARBOR (BROAD SOUND).

  • BOD, 5-day, 20 deg. C: 0 limits, 192 violations of any kind, 126 effluent exceedances, latest July 31, 2026, largest 397% over the limit.
  • Solids, total suspended: 0 limits, 161 violations of any kind, 118 effluent exceedances, latest July 31, 2026, largest 620% over the limit.
  • Flow, in conduit or thru treatment plant: 0 limits, 108 violations of any kind, 86 effluent exceedances, latest April 30, 2022, largest 29% over the limit.
  • Coliform, fecal general: 0 limits, 87 violations of any kind, 64 effluent exceedances, latest June 30, 2026, largest 131,823% over the limit.
  • BOD, 5-day, percent removal: 0 limits, 58 violations of any kind, 46 effluent exceedances, latest July 31, 2026, largest 305% over the limit.
  • Solids, suspended percent removal: 0 limits, 51 violations of any kind, 41 effluent exceedances, latest July 31, 2026, largest 357% over the limit.
  • Chlorine, total residual: 0 limits, 47 violations of any kind, 29 effluent exceedances, latest December 31, 2024, largest 11,767% over the limit.
  • Copper, total [as Cu]: 0 limits, 46 violations of any kind, 29 effluent exceedances, latest September 30, 2021, largest 831% over the limit.
  • LC50 Static 48Hr Acute Menidia: 0 limits, 26 violations of any kind, 21 effluent exceedances, latest December 31, 2025, largest 47% over the limit.
  • Oil & Grease: 0 limits, 26 violations of any kind, 11 effluent exceedances, latest December 31, 2025, largest 127% over the limit.
  • LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia): 0 limits, 5 violations of any kind, 3 effluent exceedances, latest September 30, 2005, largest 25% over the limit.
  • pH: 0 limits, 19 violations of any kind, 1 effluent exceedance, latest August 31, 2010.
  • NOEL Static 7Day Chronic Menidia: 0 limits, 6 violations of any kind, 1 effluent exceedance, latest December 31, 2017, largest 99,999% over the limit.
  • Enterococci: 0 limits, 14 violations of any kind.
  • Nitrite + Nitrate total [as N]: 0 limits, 8 violations of any kind.
  • Nitrogen, Kjeldahl, total [as N]: 0 limits, 6 violations of any kind.
  • E. coli, thermotol, MF, MTEC: 0 limits, 2 violations of any kind.
  • NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulata: 0 limits, 2 violations of any kind.
  • Nitrogen, ammonia total [as N]: 0 limits, 1 violation of any kind.
  • March 2, 2026: Audit (E).
  • December 31, 2024: PR: Failure to submit required report within 30 days of applicable due date (Level I) (EP6).

Massachusetts holds 96 Publicly owned treatment works coverages of this permit type in EPA’s file; 5 were issued before MA0100552.

Coverages issued nearest MA0100552

LYNN REGIONAL W P C F among its neighbors

146 discharge permits are in the Outlet Saugus River-Frontal Broad Sound subwatershed (HUC 010900010402); MA0100552 is one. Its county: 271, 13 major; MA0100552 is major permit.

Other permits in the Outlet Saugus River-Frontal Broad Sound subwatershed (HUC 010900010402)

Identity

FacilityLYNN REGIONAL W P C F
PermitteeLYNN REGIONAL W P C F
NPDES IDMA0100552
StatusAdministratively continued
TypeIndividual permit
ClassMajor
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedMay 31, 2000
ExpiresJuly 31, 2005
AddressLynn, MA 01905
Receiving waterLYNN HARBOR (BROAD SOUND)
Receiving water impaired303(D) Listed
SubwatershedOutlet Saugus River-Frontal Broad Sound (HUC 010900010402)
Other EPA IDs (FRS)RCRA handler MAC300097425; ICIS-AIR source MA0000002511900520

NPDES MA0100552: effluent limits and exceedances

LYNN REGIONAL W P C F (NPDES MA0100552): 19 pollutants on file, 0 limited; 19 with a violation of any kind, 13 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
BOD, 5-day, 20 deg. C0192126July 31, 2026397% over the limit
Solids, total suspended0161118July 31, 2026620% over the limit
Flow, in conduit or thru treatment plant010886April 30, 202229% over the limit
Coliform, fecal general08764June 30, 2026131,823% over the limit
BOD, 5-day, percent removal05846July 31, 2026305% over the limit
Solids, suspended percent removal05141July 31, 2026357% over the limit
Chlorine, total residual04729December 31, 202411,767% over the limit
Copper, total [as Cu]04629September 30, 2021831% over the limit
LC50 Static 48Hr Acute Menidia02621December 31, 202547% over the limit
Oil & Grease02611December 31, 2025127% over the limit
LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)053September 30, 200525% over the limit
pH0191August 31, 2010
NOEL Static 7Day Chronic Menidia061December 31, 201799,999% over the limit
Enterococci0140
Nitrite + Nitrate total [as N]080
Nitrogen, Kjeldahl, total [as N]060
E. coli, thermotol, MF, MTEC020
NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulata020
Nitrogen, ammonia total [as N]010

NPDES MA0100552: inspections, violations and enforcement

NPDES MA0100552: 1 single-event violation

DateWhat EPA recordedAgency
December 31, 2024PR: Failure to submit required report within 30 days of applicable due date (Level I)EP6

NPDES MA0100552: 1 inspection

DateWhat EPA recordedAgency
March 2, 2026AuditE

NPDES MA0100552 (LYNN REGIONAL W P C F): no formal enforcement action and informal enforcement action on file.

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Permits near NPDES MA0100552

NPDES MA0100552: 19 pollutant rows, 2 dated events; ICIS-NPDES download, loaded September 15, 2026.