Is New Haven Tap Water Safe? What South Central Connecticut Regional Water Authority’s EPA Records Show
South Central Connecticut Regional Water Authority, which serves about 418,900 people in greater New Haven, Connecticut, reported PFOA, PFOS above the EPA limit in the EPA’s UCMR5 PFAS monitoring (2023-2025). That is the system’s own reported occurrence — “reported above the limit,” not “in violation”; enforcement of the PFAS limits phases in through 2029-2031. Its most recent EPA-record lead 90th-percentile was non-detect (below the reporting limit) — under the current 15 ppb action level.
See the full interactive report for this system — every PFAS analyte, lead and copper rounds, violations, and the filter that handles what was found: open the New Haven report → Or check YOUR exact ZIP: check your water by ZIP →
Beyond PFAS: state-record results over an EPA limit
- tthm: 122.7 ug/L (highest sample 2016-09-12; 2012-2019 records, not current)
- haa5: 72.9 ug/L (highest sample 2016-09-06; 2012-2019 records, not current)
These are the highest samples in the state/EPA record for this system — a snapshot, not a current reading; the utility’s Consumer Confidence Report is the official current record.
Common questions about New Haven water
Is New Haven's tap water safe to drink?
The records show PFOA, PFOS, tthm, haa5 above a current EPA limit or action level — the details, with dates, are in the sections above. That is a system-level occurrence record, not a verdict on any individual tap. These are system-level records for public water systems, not a reading of any individual home’s tap, and they do not cover private wells. Confirm your own utility’s current Consumer Confidence Report, and test your tap if you’re unsure.
Does New Haven have PFAS in its drinking water?
South Central Connecticut Regional Water Authority reported PFOA, PFOS above the EPA’s limit in UCMR5 monitoring — an occurrence flag, not a compliance finding (enforcement 2029-2031).
Who supplies New Haven's drinking water?
South Central Connecticut Regional Water Authority (PWSID CT0930011) serves about 418,900 people in greater New Haven, Connecticut, per EPA SDWIS records. A metro area is usually served by more than one water system — this page covers the area’s largest. Suburbs and neighboring towns often have their own systems with their own results; check your exact ZIP for yours.
How do I check my exact address?
Water systems report by system, not by address. Enter your ZIP on the water checker to see the system(s) serving it and what each reported.
Statewide, 43.5% of Connecticut’s UCMR5-tested systems reported PFOA or PFOS over the EPA limit — see the Connecticut water page.
Other large systems in Connecticut
See the 100 largest US water systems, water quality by state, and the national PFAS data study.
Sources: EPA UCMR5 occurrence data, Feb 2026 release (~95% complete; final reporting 2026) (2026-06); lead/copper + violations: EPA SDWIS via ECHO; population served: EPA SDWIS via ECHO (system-reported population served). PWSID CT0930011. Public-domain federal/state records; assembly by WaterByTheBook. Built 2026-07-25. Plain-markdown mirror: https://waterbythebook.com/md/new-haven.md