Clean Water Act discharge permit · NPDES MAG580009
MCI - CONCORD, Concord, MA: NPDES MAG580009 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 32Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MCI - CONCORD, held by MASSACHUSETTS CORRECTIONAL INSTITUTION (MCI), holds NPDES permit MAG580009, which discharges to Assabet River. EPA’s file records it issued September 28, 2021 and expiring November 30, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MCI - CONCORD |
|---|---|
| Permittee as filed | MASSACHUSETTS CORRECTIONAL INSTITUTION (MCI) |
| NPDES ID | MAG580009 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 28, 2021 |
| Expiration date | November 30, 2026 |
| Address | Concord, MA 01742 |
| Receiving water | ASSABET RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Elizabeth Brook-Assabet River (HUC 010700050204) |
| Other EPA IDs (FRS) | RCRA handler MAD091496422; ICIS-AIR source MA0000002511900579 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 32Pollutants on file
- 32Under a numeric limit
- 32With a violation of any kind
- 4With an effluent exceedance
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 measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 6 | 44 | 2 | June 30, 2025 | 150% over the limit |
| Aluminum, total [as Al] | 7 | 24 | 2 | April 30, 2026 | 112% over the limit |
| Lead, total [as Pb] | 4 | 37 | 1 | June 30, 2025 | 33% over the limit |
| pH | 3 | 33 | 1 | May 31, 2024 | |
| BOD, 5-day, 20 deg. C | 6 | 84 | 0 | ||
| Solids, total suspended | 6 | 84 | 0 | ||
| Flow, in conduit or thru treatment plant | 3 | 42 | 0 | ||
| Nitrogen, total [as N] | 2 | 28 | 0 | ||
| Chlorine, total residual | 2 | 28 | 0 | ||
| E. coli | 2 | 28 | 0 | ||
| Nitrogen, ammonia total [as N] | 5 | 26 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 14 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 14 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 14 | 0 | ||
| BOD, 5-day, percent removal | 1 | 14 | 0 | ||
| Solids, suspended percent removal | 1 | 14 | 0 | ||
| Carbon, tot organic [TOC] | 2 | 8 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 8 | 0 | ||
| Cadmium, total [as Cd] | 2 | 8 | 0 | ||
| Copper, total [as Cu] | 2 | 8 | 0 | ||
| Nickel, total [as Ni] | 2 | 8 | 0 | ||
| Zinc, total [as Zn] | 2 | 8 | 0 | ||
| Carbon, dissolved organic [as C] | 1 | 7 | 0 | ||
| Temperature, water deg. centigrade | 1 | 4 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 1 | 4 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 1 | 4 | 0 | ||
| Perfluorooctanoic acid (PFOA) | 3 | 3 | 0 | ||
| Perfluoroheptanoic acid (PFHpA) | 3 | 3 | 0 | ||
| Perfluorononanoic acid (PFNA) | 3 | 3 | 0 | ||
| Perfluorodecanoic acid (PFDA) | 3 | 3 | 0 | ||
| Perfluorohexanesulfonic acid (PFHxS) | 3 | 3 | 0 | ||
| Perfluorooctanesulfonic acid (PFOS) | 3 | 2 | 0 |
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 MAG580009.
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, MAG580009.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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 MAG580009 there.
Nearby on the register
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- Every permit record in Concord, A to Z
- Discharge permits in Massachusetts
- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.