Is MIT HAYSTACK OBSERVATORY Water Safe to Drink in 2026?
Massachusetts · PWSID MA3301023 · Ground water
Population served
40
Cities served
TYNGSBOROUGH
State / jurisdiction
Massachusetts (MA)
PWSID
MA3301023
F
TAP WATER GRADE
High risk
Model score 30/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
154 violation record(s) in the latest EPA SDWA quarterly snapshot
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CONTAMINANTS — EPA UCMR5 MONITORING
No UCMR5 PFAS detects on file for this PWS in our bundled national dataset — the system may be smaller than UCMR5 thresholds, had non-detects, or results are not yet linked to this ID. Your retailer Annual Water Quality Report lists other regulated contaminants (chlorine, DBPs, nitrates, etc.).
VIOLATIONS HISTORY (FEDERAL SNAPSHOT)
EPA’s national SDWA quarterly files associate 154 violation-related records with this system in the same reporting quarter as the utility snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.
WHY THIS FOR MIT HAYSTACK OBSERVATORY · Chosen for MIT HAYSTACK OBSERVATORY because the latest federal SDWA snapshot lists substantial violation activity. Certified reverse osmosis provides the broadest residential barrier for households that want margin beyond legal compliance.
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