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Clean Water Act discharge permit · NPDES MAG912194

EVERSOURCE GCEP BROADWAY KENDALL GEN CONNECTION, Cambridge, MA: NPDES MAG912194 discharge permit, effluent exceedances, inspections, penalties

EVERSOURCE GCEP BROADWAY KENDALL GEN CONNECTION, held by NSTAR Electric Company d/b/a Eversource Energy, holds NPDES permit MAG912194. EPA’s file records it issued August 2, 2022 and expiring August 1, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedEVERSOURCE GCEP BROADWAY KENDALL GEN CONNECTION
Permittee as filedNSTAR Electric Company d/b/a Eversource Energy
NPDES IDMAG912194
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedAugust 2, 2022
Expiration dateAugust 1, 2027
Issuing agencyEPA Region 1
AddressCambridge, MA 02142
Receiving water impaired303(D) Listed
SubwatershedCharles River-Frontal Boston Harbor (HUC 010900010704)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
pH2160
Nitrogen, total [as N]2160
Cyanide, total [as CN]2160
Chloride, total recoverable2160
Arsenic, total recoverable2160
Lead, total recoverable2160
Copper, total recoverable2160
Turbidity180
Solids, total suspended180
Iron, total recoverable180
Zinc, total recoverable180
Acenaphthene180
Ethylbenzene180
Fluorene180
1,4-Dichlorobenzene180
Naphthalene180
BTEX180
Flow, in conduit or thru treatment plant180
Total Group II Polycyclic Aromatic Hydrocarbons180
Solids, total dissolved [TDS]180
Xylene [mix of m+o+p]180
Hydrocarbons, total petroleum180

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MAG912194.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MAG912194.

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

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, MAG912194.

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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 MAG912194 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.