Environmental hazards, flood and water records in Cohasset, MA
Public environmental, infrastructure and surveillance records inside Cohasset's municipal boundary, plus the regional air, drinking-water, flood, radon and Superfund context that does not stop at the town line. Each item links to its original record. Nothing here is a risk score.
Explore Cohasset on the map ↗ Check a specific address in Cohasset See a sample brief
Counts are records inside the municipal boundary, not unique facilities and not a ranking. Sources carry different dates (June 2024 for MassDEP waste layers, TRI 2024, OpenStreetMap Sept 2026). Community-mapped items are unverified. No record does not prove absence.
Records inside Cohasset
The most consequential categories first. Open a record for its EPA compliance history, reported chemicals, what the record can and cannot tell you, and who to ask next.
Landfills Agency record
Cleanup sites Agency record
- 3 48 990ME 46 78 218MN 1071 41 1077 85
- 3 49 325ME 46 78 147 MN 1079 46 1081 07
- 3 49 584ME 46 78 111MN 1091 03 1097 48
- 3 50 814ME 46 77 923MN 1124 87 1161 23
- 3 51 692ME 46 76 836MN 1164 77 1196 62
- 3 51 809ME 46 76 450MN 1205 20 1209 10
- 3 52 089ME 46 75 729MN 1213 03 1227 75
- BEECHWOOD DUMP WOMPATUK SP
+ 5 more on the map.
Transfer stations Agency record
- COHASSET TRANSFER STATION
Communications Community mapped
- Communications tower / antenna
- Communications tower / antenna
- Communications tower / antenna
- Communications tower / antenna
Mapped cameras Community mapped
- Plate reader
- Plate reader
- Plate reader
Beyond the town line
Air pollution follows wind and stack height, water comes from wherever the supplier draws it, and a Superfund plume ignores municipal boundaries. These items are searched from the town's center across state lines.
Incinerators within 30 miles
- WHEELABRATOR SAUGUS INC
- MSW POWER CORP
- PET MEMORIAL PARK
- SEMASS PARTNERSHIP
A 30-mile extent is EPA's air-modeling distance for toxic releases, used here as a search limit, not a danger radius.
Superfund sites within 10 miles
Largest reported air releases within 30 miles
- CALPINE FORE RIVER ENERGY CENTER LLC
- ENTEGRIS INC
- DUNCAN GALVANIZING CORP.
- CPS TECHNOLOGIES CORP
- DAMPNEY CO INC
- BOSTIK MANUFACTURING PLANT
Pounds are facility self-reports, not concentrations in Cohasset, and chemicals differ widely in toxicity. How to read TRI and ECHO records ↗
Drinking water, radon, air quality, flood
Community water systems serving Cohasset
- COHASSET WATER DEPT No health-based violations since 2021-01-01
- WEIR RIVER WATER SYSTEM No health-based violations since 2021-01-01
Boundaries are estimates and do not verify a household connection. Sample results are at treatment or entry points, not at a tap. Drinking-water questions to ask ↗ · PFAS explained ↗
Radon, particle pollution, flood
Radon: Norfolk County is EPA Zone 2, moderate predicted potential (2–4 pCi/L). EPA says the zone map must not be used to decide whether to test; homes in every zone have measured high levels. Testing guidance ↗
Fine particles (PM2.5): nearest regulatory monitor Weymouth (Weymouth, MA, 7.4 mi) measured a 2025 annual mean of 5.3 µg/m³; the annual standard adopted in 2024 is 9.0 µg/m³ on a three-year design value. A monitor reports its own location, not Cohasset.
Flood: FEMA flood zones are point-specific. Use the map to query the National Flood Hazard Layer live at an address. Flood questions to ask ↗
Major roads: 19 mapped motorway, trunk or primary segments cross Cohasset. Road proximity is a cue for traffic noise and emissions, not a measurement. More ↗
Documented surveillance technology in Cohasset
Agency-level records from the EFF Atlas of Surveillance. These describe documented technology use, not device locations or current operation.
- Cohasset Police Department · Third-party Investigative Platforms · SoundThinking
- Cohasset Police Department · Automated License Plate Readers · Flock Safety
Do not use registry information to commit a crime, harass anyone or engage in illegal discrimination. Massachusetts law prohibits these uses. These town totals are not individual background checks or eligibility decisions.
Sex offender registry information in Cohasset, Massachusetts
Count not published for Cohasset in this source. The selected report supplies totals for ten cities only. This means unknown here, not zero.
For current public records, open the official Massachusetts registry search and select Cohasset.
Published municipal totals are not a crime rate or safety rating. The city table does not separate registry classifications and is not equivalent to public online search counts. Read the registry coverage guide.
Table labeled 2024 · source date as printed: August 5, 2024 · Official report, Table 7, page 24.
Questions worth asking before you commit
Compiled from the guides for the record types actually present in or near Cohasset.
Environmental regulator
Request groundwater and gas monitoring, closure plans and any off-site migration findings. (Landfills & land-disposal sites)
Request the latest site investigation, plume maps, cleanup status and any activity/use limitations. (Cleanup sites & historic contamination)
Review chemical-specific emissions, inspections and the underlying documents for any violation. (Industrial releases & air-program facilities)
Request the current air permit, recent stack tests and any published dispersion study. (Incinerators & waste-to-energy)
Ask whether nearby private wells or indoor air have been sampled and what the results were. (Superfund (National Priorities List) sites)
Water supplier / well professional
Confirm the drinking-water source and whether site-related contaminants have been tested. (Landfills & land-disposal sites)
Seller / inspector
Ask about recorded land-use restrictions and any environmental reports for the parcel. (Landfills & land-disposal sites)
Request environmental disclosures and maintenance records for any mitigation system. (Cleanup sites & historic contamination)
Check any tower lease/easement, lighting and generator-noise concerns. (Communications towers & antennas)
Confirm municipal water versus private well and request available water-quality and plumbing records. (Drinking water & groundwater)
For a private well, request PFAS test results or arrange a test with a certified laboratory. (PFAS in drinking water)
Request dated radon test results and any mitigation-system records. (Radon inside the home)
Request flood and water-intrusion history, drainage repairs and elevation documents. (Flood context)
Visit during rush hour and at night; assess window and ventilation conditions. (Major roads & traffic)
Local permitting department
Check operating hours, truck-route conditions and enforcement records. (Transfer stations & other waste facilities)
Seller / neighbors
Visit on a working weekday and ask about truck traffic, noise and odors. (Transfer stations & other waste facilities)
Qualified environmental professional
Determine whether site-specific vapor, soil or well testing is appropriate. (Cleanup sites & historic contamination)
Planning department / operator
Request the equipment description, siting permit and applicable RF compliance assessment. (Communications towers & antennas)
Agency / device operator
Request the current collection, retention, access and sharing policy. (Cameras, plate readers & privacy)
Agency records office
Ask for the deployment approval, contract, audit policy and oversight reports. (Cameras, plate readers & privacy)
Facility operator
Ask which emissions controls and monitoring apply to the relevant process. (Industrial releases & air-program facilities)
Which pollutants are monitored, how often, and are results public? (Incinerators & waste-to-energy)
Environmental professional
Look for a published dispersion or exposure assessment before interpreting personal risk. (Industrial releases & air-program facilities)
Local health department
Are there monitoring studies or investigated odor/air complaints for this area? (Incinerators & waste-to-energy)
EPA site manager / community involvement coordinator
Request the current site status, the operable-unit boundaries, plume maps and any five-year review findings. (Superfund (National Priorities List) sites)
Title professional
Check for recorded activity and use limitations or easements tied to the cleanup. (Superfund (National Priorities List) sites)
Water supplier
Confirm service to the address and request the latest Consumer Confidence Report and relevant sampling results. (Drinking water & groundwater)
Ask for the most recent PFAS results, the treatment in place and the compliance schedule if a limit was exceeded. (PFAS in drinking water)
Certified laboratory / local health department
For a private well, discuss a testing panel appropriate to local conditions. (Drinking water & groundwater)
State drinking-water program
Ask whether the system is under a PFAS order and where the public notices are. (PFAS in drinking water)
Qualified radon professional
Arrange appropriate testing and discuss mitigation if results warrant it. (Radon inside the home)
Local floodplain administrator
Confirm the effective map, any map revisions and building-specific requirements. (Flood context)
Insurer
Obtain a property-specific flood insurance quote and coverage explanation. (Flood context)
Transportation department
Request recent traffic counts, truck routes and planned road changes. (Major roads & traffic)
Neighboring towns
Sources: MassDEP solid waste (June 2024) and tier-classified sites, EPA TRI 2023–2024, EPA ECHO (retrieved 2026-10-03), EPA NPL, EPA AQS, EPA UCMR 5, EPA SDWIS, MassDEP water service areas, EPA radon zones, HIFLD, OpenStreetMap (ODbL), EFF Atlas of Surveillance (CC BY). Guidance reviewed 2026-09-13. Methodology and limits · Report a problem with a record.