Home hazard report for 01770 — Sherborn, MA
ZIP 01770 has no mapped public water system — homes here most likely use private wells. Middlesex County is in EPA radon zone 1.
Well water is not tested by any agency — test it yourself.
Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
FEMA’s overall natural-hazard risk for this census tract, relative to the rest of the U.S.
The nearest active Superfund site is 4.0 miles away.
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Where ZIP 01770 is
Dashed: ZIP area · scroll or pinch to zoomDrinking water: probably a private well
No community water system’s service area covers the center of ZIP 01770, and no system lists it. In rural areas that usually means private wells. The EPA does not regulate private wells: owners should test once a year for coliform bacteria and nitrate, and every few years for arsenic, lead, uranium and other local concerns. Your county health department can recommend a certified lab.
Radon in Middlesex County
EPA radon zone 1 — highest potential. Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
Radon is a colorless, odorless radioactive gas from soil and rock, and the leading cause of lung cancer among non-smokers. EPA recommends fixing a home at 4 pCi/L or above and considering it from 2 pCi/L. A short-term test kit costs about $15–30. How radon zones work →
Natural hazard risk
FEMA rates the overall natural-hazard risk of this neighborhood (census tract) as Relatively Low, with very low social vulnerability and very high community resilience.
FEMA National Risk Index (December 2025): expected annual losses from each hazard combined with social vulnerability and community resilience, rated relative to all U.S. census tracts. Hazards not listed are not applicable here. It describes the area, not a single building; flood insurance maps (FEMA FIRMs) decide flood-insurance requirements.
Live conditions: river gauges and flood levels · tornado warnings · wildfire detections · earthquakes — our sister maps, updated from NOAA, USGS and NASA every few minutes.
Superfund sites nearby
| Site | Status | Distance |
|---|---|---|
| Natick Laboratory Army Research, Development, and Engineering Center Natick, Massachusetts · EPA ID MA1210020631 | Active (final NPL) | 4.0 mi |
| Nyanza Chemical Waste Dump Ashland, Massachusetts · EPA ID MAD990685422 | Active (final NPL) | 5.5 mi |
| Blackburn and Union Privileges Walpole, Massachusetts · EPA ID MAD982191363 | Active (final NPL) | 8.9 mi |
| Norwood PCBs Norwood, Massachusetts · EPA ID MAD980670566 | Cleaned up & deleted | 9.9 mi |
EPA Superfund National Priorities List (NPL): the country’s most serious known hazardous-waste sites, each with an EPA cleanup record (linked). Distance is measured from the ZIP center to the site’s reference point; being near a site does not by itself mean exposure — EPA site pages describe what was found and how it is being cleaned up.
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions about 01770
Does ZIP 01770 have public water?
No community water system service area covers the center of ZIP 01770, and none lists it. Homes here most likely use private wells, which no agency tests — owners should test yearly for bacteria and nitrate, and every few years for arsenic, lead and other local concerns.
What natural hazards affect ZIP 01770?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Low; the highest-rated hazards are ice storm (relatively moderate), cold wave (relatively low), earthquake (relatively low).
Are there Superfund sites near 01770?
The nearest active Superfund site is 4.0 miles away. Sites within 10 miles: Natick Laboratory Army Research, Development, and Engineering Center (4.0 mi, Active (final NPL)); Nyanza Chemical Waste Dump (5.5 mi, Active (final NPL)); Blackburn and Union Privileges (8.9 mi, Active (final NPL)).
Is radon a problem in Middlesex County?
Middlesex County is in EPA radon zone 1 (highest potential). Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.