Clean Water Act discharge permit · NPDES MAR10064V
HILLSIDE SUBSTATION NO. 66, Amesbury, MA: NPDES MAR10064V discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
HILLSIDE SUBSTATION NO. 66, held by Massachusetts Electric Company, holds NPDES permit MAR10064V. EPA’s file records it issued January 20, 2026 and expiring February 16, 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.
What the register holds for HILLSIDE SUBSTATION NO. 66: its NPDES ID, its permit type and status, its dates, its address in Amesbury, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAR10064V.
Identity
| Facility as filed | HILLSIDE SUBSTATION NO. 66 |
|---|---|
| Permittee as filed | Massachusetts Electric Company |
| NPDES ID | MAR10064V |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issued | January 20, 2026 |
| Expiration date | February 16, 2027 |
| Issuing agency | U.S. EPA |
| Address | Amesbury, MA 01913 |
| Subwatershed | East Meadow River-Merrimack River (HUC 010700061404) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MAR10064V.
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 MAR10064V.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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.
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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 MAR10064V there.
Nearby on the register
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- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.