The Archive of Massachusetts Environmental Data
In August of 2017, the MA Executive Office of Energy and Environmental Affairs (EEA) began operating an “Enterprise Data Portal” for certain state regulatory data. Initially, this has included permit, facilities, inspections, and enforcement, and drinking water testing data; more data assets are promised “regularly.”
Data on combined sewer overflows (CSOs) were added in 2022 and now incorporated in AMEND. Other data tables added to the portal in recent years are not yet integrated.
Definitions, FAQs, disclaimers, and other information related to these datasets is available in PDF format at the EEA Data Portal website’s help page and archived here:
One of these datasets, the historical drinking water quality measurement dataset, is significantly larger than the other (>200 MB in total). Because this measurement-level drinking water quality reporting is not instrumental to the goals of AMEND, we do not include it in our integrated database. We do provide an archived version of the complete drinking water dataset below.
The data from this portal has been archived on this site, last updated on 16 July 2026 12:32 pm. The CSO data is queried using a separate script and was last updated on 16 July 2026 12:32 pm. Both datasets are refreshed automatically on a weekly basis.
In addition to including them in them in the integrated AMEND Database, we provide our archives of each of these data assets in CSV format:
For brevity, a random sample of 10 rows from each table and a subset of all columns is shown below for illustration as to the tables’ form and content.
| Enforcement Date | Enforcement Type | Facility Name | Penalty Assessed | Program | Town |
|---|---|---|---|---|---|
| 2022-06-07 | Administrative Consent Order With Penalty | CHILMARK SCHOOL | 1000.0 | WATER SUPPLY/DRINKING WATER | CHILMARK |
| 2003-01-28 | Notice Of Non-Compliance | PLYMOUTH SO.ELEM.SCH. | WATER SUPPLY/DRINKING WATER | PLYMOUTH | |
| 2008-06-23 | Penalty Assessment Notice | AMESBURY MOBIL | 1000.0 | REGULATED ACTIVITY(S) | AMESBURY |
| 2019-12-12 | Notice Of Non-Compliance | LINCOLN PROPERTY COMPANY | REGULATED ACTIVITY(S) | ||
| 1996-07-30 | Notice Of Non-Compliance | ADMINISTRATION BLDG TOWN HALL ANNEX | WATER SUPPLY/DRINKING WATER | WESTPORT | |
| 2000-06-21 | Notice Of Non-Compliance | CHERRY HILL GOLF COURSE | REGULATED ACTIVITY(S) | AMHERST | |
| 2024-11-01 | Notice Of Non-Compliance | NORTHBRIDGE POLICE DEPARTMENT | REGULATED ACTIVITY(S) | NORTHBRIDGE | |
| 2000-06-02 | Notice Of Non-Compliance | SOUTHEASTERN METAL FAB | REGULATED ACTIVITY(S) | WEYMOUTH | |
| 2005-01-11 | Notice Of Non-Compliance | STATE ROAD RESTAURANT | WATER SUPPLY/DRINKING WATER | WEST TISBURY | |
| 2020-12-04 | Notice Of Non-Compliance | HARWICH PORT BOAT YARD | REGULATED ACTIVITY(S) | HARWICH |
| Facility Name | Facility Type | Program | Street Name | Town | Active |
|---|---|---|---|---|---|
| CVS PHARMACY 0686 | DEP REGULATED FACILITY | REGULATED ACTIVITY(S) | 178 WASHINGTON ST | BRAINTREE | True |
| PHIL & BETH FERRARI | DEP REGULATED FACILITY | REGULATED ACTIVITY(S) | 46 LAKESIDE RD | NEW MARLBOROUGH | True |
| ESSEX TOWN OF SEWER PROJECT CONTRACT 4 | DEP REGULATED FACILITY | REGULATED ACTIVITY(S) | WESTERN AVENUE MARTIN ST | ESSEX | False |
| FULLER PROPERTY | DEP REGULATED FACILITY | REGULATED ACTIVITY(S) | 64 SLEEPY HOLW | WRENTHAM | True |
| BAYSTATE DENTAL | DEP REGULATED FACILITY | REGULATED ACTIVITY(S) | 16 CENTER ST | NORTHAMPTON | False |
| FERIOLI PROPERTY | DEP REGULATED FACILITY | REGULATED ACTIVITY(S) | 30 DUNHAM RD | PLYMOUTH | True |
| ROBERTS DALE | DEP REGULATED FACILITY | REGULATED ACTIVITY(S) | 40 PLEASANT ST | YARMOUTH | True |
| CHRISTOPHER PULA & THOMAS BIGGERT | DEP REGULATED FACILITY | REGULATED ACTIVITY(S) | 473 COMMERCIAL ST | PROVINCETOWN | True |
| MYSTIC STATION UNIT 7 | DEP REGULATED FACILITY | REGULATED ACTIVITY(S) | 173 ALFORD ST | BOSTON | True |
| LINDA COHEN | DEP REGULATED FACILITY | REGULATED ACTIVITY(S) | 22 GRAPE LN | OTIS | True |
| Facility Name | Inspection Date | Inspection Type | Program | Town |
|---|---|---|---|---|
| SOUTH DEERFIELD WATER SUPPLY DISTRICT | 2003-05-07 | SANITARY SURVEY | WATER SUPPLY/DRINKING WATER | DEERFIELD |
| HOLLISTON WATER DEPARTMENT | 2011-09-08 | FACILITY SELF REPORTING | WATER SUPPLY/DRINKING WATER | HOLLISTON |
| FITCHBURG WESTMINSTER SLF | 2009-02-17 | Solid Waste Inspect with Enforcement Potential | REGULATED ACTIVITY(S) | WESTMINSTER |
| LEHIGH GAS MA0075 | 2012-11-30 | Unannounced Single-Media Inspection | REGULATED ACTIVITY(S) | OXFORD |
| WHITNEY CARRIAGE PARK | 2025-06-16 | Assess Reporting Problems or Inclusion to Regulated Universe | REGULATED ACTIVITY(S) | LEOMINSTER |
| BROOKSIDE VILLAGE | 2005-10-11 | SANITARY SURVEY | WATER SUPPLY/DRINKING WATER | WALES |
| RUSSELL LANDFILL & TRANSFER STATION | 2012-05-31 | Solid Waste Inspect with Enforcement Potential | REGULATED ACTIVITY(S) | RUSSELL |
| HILDRETH HILLS CONDOMINIUMS TRUST | 2015-04-30 | BWR/BRP Announced Inspection Related Activity | REGULATED ACTIVITY(S) | WESTFORD |
| SOMERS ROAD LANDFILL | 2018-08-07 | Solid Waste Visit Limited Enforcement Potential | REGULATED ACTIVITY(S) | EAST LONGMEADOW |
| A PLUS WASTE & RECYCLING SERVICES LLC | 2012-01-18 | Solid Waste Inspect with Enforcement Potential | REGULATED ACTIVITY(S) | MIDDLEBOROUGH |
| DateApplied | FacilityName | FinalDecisionDate | PermitNumber | PermitType | Program | Status | StreetName | Subtype | Town |
|---|---|---|---|---|---|---|---|---|---|
| 2000-09-06T00:00:00 | BLANCHARD MEMORIAL SCHOOL | 2001-04-20T00:00:00 | W015188 | WS17 | WATER SUPPLY/DRINKING WATER | Approved | 493 MASSACHUSETTS AVE | Approval Site & Pump Test Source 70/Over GPM | BOXBOROUGH |
| 2005-02-23T00:00:00 | ESSENTIAL POWER MASS LLC WEST SPFLD STA | 2005-03-04T00:00:00 | W060085 | HW21 | HAZARDOUS WASTE | Approved | 15 AGAWAM AVE | Level I Recycling/Renewal Class A Materials | WEST SPRINGFIELD |
| 2000-03-27T00:00:00 | WEST BRIDGEWATER WATER DEPT | 2000-07-17T00:00:00 | W011097 | WS29 | WATER SUPPLY/DRINKING WATER | Approved | 29 CYR ST | Chemical Addition Retrofit for Sys Serving Over 3300 People | WEST BRIDGEWATER |
| 2018-05-24T00:00:00 | VILLAGE AT BROOKSIDE CONDOMINIUM | 2019-05-07T00:00:00 | X280677 | WP12 | WATER POLLUTION CONTROL | Approved | BROOKSIDE DR | Renewal/Modification of Permit without Plan Approval | BOURNE |
| MAXIMILIAN MAHER | 2025-01-06T15:47:06 | TU01-0000160 | TU01 | TOXIC USE REDUCTION | Active | 58 AMERICA ST. APT. 3 | TU01 | PROVIDENCE | |
| TAMMY DENNY | 2025-10-09T14:38:58 | FERT-000759 | FERT | PLANT INDUSTRIES | Active | PO BOX 215 | SPECIALTY PRODUCT | REIDSVILLE | |
| 2008-04-25T00:00:00 | BABSON WATER TREATMENT FACILITY | 2008-10-30T00:00:00 | W222979 | WP29 | WATER POLLUTION CONTROL | Approved | 19 RUSSELL AVE | Suitability Determination Residuals Land Application | GLOUCESTER |
| 2003-01-29T00:00:00 | AMRIZE NORTHEAST INC | 2003-03-21T00:00:00 | W032948 | AQ02 | AIR QUALITY CONTROL | Approved | 651 LAKE ST | Plan Approval Non-Major Comprehensive | SHREWSBURY |
| 2009-12-23T00:00:00 | LOCATION | 2010-02-03T00:00:00 | E281133 | BWS03 | WASTE SITE CLEANUP | Approved | 604 BEDFORD ST | Tier IC Response Action Permit | EAST BRIDGEWATER |
| 2000-02-16T00:00:00 | PLYMOUTH SOUTH ST LANDFILL & TRANS STA | 2000-03-29T00:00:00 | W009276 | SW07 | SOLID WASTE MGMT | Approved | LONG POND RD | Modification of Large Transfer/Handling Facility | PLYMOUTH |
| Chemical Name | Class | Collected Date | Contaminant Group | Location Name | Public Water System Name | Raw or Finished | Measurement Result | Town |
|---|---|---|---|---|---|---|---|---|
| ARSENIC | NTNC | 2019-03-20 | ARSEN | WELL #1 RAW WATER | GILL ELEMENTARY SCHOOL | R | 0.0035 | GILL |
| HALOACETIC ACIDS | COM | 2020-02-18 | HAA5 | BRATTLE ST VAULT - 3RD WEEK OF MONTH | HOLDEN WATER DIVISION, DPW | F | 20.4 | HOLDEN |
| CHLOROFORM | COM | 2024-08-06 | THM | DEPT OF PUBLIC WORKS | NATICK WATER AND SEWER DIVISION | F | 6.4 | NATICK |
| 1,2-DICHLOROETHANE | NTNC | 2022-01-19 | VOC | WELL #2 - FINISHED WATER | STOW CENTER SCHOOL | F | ND | STOW |
| PCB AROCLOR 1232 | COM | 2018-06-26 | SOC | SOUTH POND WELL #1 & #2 | PLYMOUTH WATER DEPARTMENT | F | ND | PLYMOUTH |
| CHLORODIBROMOMETHANE | COM | 2016-02-01 | VOC | STA # 2 | COTUIT FIRE DISTRICT WATER DEPARTMENT | F | ND | BARNSTABLE |
| CHLOROFORM | COM | 2012-07-18 | VOC | BILODEAU WTP #2 - ENDED JUNE 30-2022 | WEYMOUTH WATER DEPARTMENT | F | 28 | WEYMOUTH |
| DIBROMOMETHANE | COM | 2018-05-14 | VOC | FINISHED: WELL #1 - NORTH MAIN STREET | AQUARION WATER COMPANY OXFORD | F | ND | OXFORD |
| HEXACHLOROBUTADIENE | COM | 2022-04-05 | VOC | RAW: GREEN ST. GP WELLS (BLEND) | HOPEDALE WATER DEPARTMENT | R | ND | HOPEDALE |
| METHOMYL | COM | 2012-08-07 | SOC | POINT OF ENTRY POST TREATMENT | SOUTHWICK WATER DEPT | F | ND | SOUTHWICK |
| Year | Public Water System Name | Contaminant Group | Raw or Finished | Result |
|---|---|---|---|---|
| 2016 | STURBRIDGE RETIREMENT COOP. CORP. | SECCON | R | 4 |
| 2010 | WHEATLEIGH INN | VOC | F | 1 |
| 2016 | BISHOPS LANDING CONDOMINIUMS | INORG | F | 4 |
| 2014 | ORANGE WATER DEPT | INORG | F | 15 |
| 1997 | HARWICH WATER DEPARTMENT | NITRAT | F | 11 |
| 2004 | SOUTH MEADOW VILLAGE | SOC | F | 44 |
| 1995 | SHREWSBURY WATER DEPARTMENT | NITRAT | R | 6 |
| 2020 | PROSPECT MOUNTAIN CAMPGROUND | SECCON | F | 4 |
| 2010 | THE OXBOW | NITRAT | F | 1 |
| 2011 | CITY OF NEW BEDFORD DPI | PERCHL | F | 1 |
| Year | Incident ID | incidentDate | Reporter Class | Event Type | Water Body | Municipality | Volume |
|---|---|---|---|---|---|---|---|
| 2024.0 | 449c768d-3490-44d9-9053-5232a787c749 | 2024-01-10 00:00:00 | Verified Data Report | SSO – System Surcharging Under High Flow Conditions | Other | BOSTON | 28704157.0 |
| 2023.0 | f8bce4fb-676f-4fe3-8424-70d7c5cb01ad | 2023-07-10 16:50:26 | Public Notification Report | CSO – UnTreated | CHARLES RIVER | CAMBRIDGE | |
| 2022.0 | f3a7ed91-4cf0-473a-a777-066dc2db0896 | 2022-11-30 00:00:00 | Public Notification Report | CSO – UnTreated | CONNECTICUT R. | SPRINGFIELD | |
| 2024.0 | ca3380ae-05c4-44a3-977d-da9cd6df9baa | 2024-01-26 14:06:55 | Public Notification Report | CSO – UnTreated | TAUNTON RIVER | FALL RIVER | |
| 2023.0 | 805a0ce6-af5f-4bec-a5e5-89019b262b23 | 2023-07-25 00:00:00 | Verified Data Report | CSO – UnTreated | MUDDY RIVER | BOSTON | 364900.0 |
| 2025.0 | d174d6cb-a3e6-423d-a812-f09729f3a953 | 2025-10-08 11:38:58 | Public Notification Report | CSO – UnTreated | MILL R. | SPRINGFIELD | |
| 2023.0 | 74c71bcc-d9da-4488-b386-82da0e3851ba | 2023-07-03 21:38:04 | Public Notification Report | CSO – Treated | CHARLES RIVER | BOSTON | |
| 2025.0 | 7027daf2-286c-4890-afcd-510e35a2b387 | 2025-03-17 04:00:00 | Verified Data Report | CSO – UnTreated | TAUNTON RIVER | FALL RIVER | 1120000.0 |
| 2022.0 | 70208a30-5d06-426a-8721-5082ab5287db | 2022-12-07 08:15:13 | Public Notification Report | CSO – UnTreated | CONNECTICUT R. | HOLYOKE | |
| 2023.0 | a1a7a45b-1fc1-4319-a06d-50d872dda328 | 2023-03-27 13:46:38 | Public Notification Report | Partially Treated – Other | CONCORD RIVER | BILLERICA |