Is Connecticut tap water safe to drink?

If you're on a public system, it has to meet federal standards, per CT DPH. The bigger variable is private wells, where testing has found naturally occurring uranium and arsenic plus PFAS in some areas. So if you're on a well, getting it tested is the move, and if your home has older plumbing, keeping lead in mind is worth doing too.

Does Connecticut regulate PFAS in drinking water?

Partly. CT DPH set health-based action levels for ten PFAS compounds, adopted in 2022 and 2023, which is more than many states have. The honest caveat is that much of the public-system sampling has been voluntary, so the full extent of exceedances isn't fully known yet, and the picture should sharpen as testing expands.

Should I test my private well in Connecticut?

Yes, this is the one clear to-do. CT DPH and DEEP note that private wells can hold naturally occurring arsenic, uranium, and radium as well as PFAS, nitrates, and bacteria, and because private wells aren't federally regulated, no one tests them unless you do. Testing for those contaminants is the way to actually know what's in your water.

Water quality

Connecticut water quality

In Connecticut, the story splits sharply by where your water comes from. If you're on a private well, that's where the attention belongs: testing by the Connecticut Department of Public Health (CT DPH) and DEEP has turned up concerning levels of naturally occurring uranium and arsenic (contaminants that leach from rock), alongside PFAS, nitrates, and bacteria. On the public side, CT DPH has set health-based action levels for ten PFAS compounds (PFAS being long-lasting synthetic chemicals), though much of the public-system sampling so far has been voluntary, so the full picture isn't in yet. Lead from older plumbing and service lines is also a documented concern, and that one depends partly on the age of your own home.

Documented considerations

PFAS

According to CT DPH, the agency derived health-based drinking water action levels for ten PFAS, set in 2022 and 2023; however, recent public water system PFAS sampling has been largely voluntary, leaving overall exceedances unclear.

What removes pfas →

Arsenic

According to CT DPH and DEEP, statewide private well testing has revealed concerning levels of naturally occurring arsenic and uranium, with the state coordinating responses in areas where wells are at risk from these natural contaminants.

What removes arsenic →

Lead

According to CT DPH, lead in tap water comes from older pipes and fixtures in homes with outdated plumbing, posing particular risk to young children and pregnant women.

What removes lead →

Certified filters for Connecticut's main concerns

7.5
AquaTru Classic Countertop RO
A no-plumbing countertop 4-stage RO purifier certified to NSF standards for lead, PFAS, fluoride and arsenic with an efficient drain ratio.
pfas, arsenic, lead
6.6
Waterdrop G3P800 Tankless RO
A tankless 800 GPD reverse-osmosis system IAPMO-certified to NSF/ANSI 42, 53, 58 and 372 for a broad contaminant list including lead, PFAS, arsenic, nitrate and fluoride.
pfas, arsenic, lead
8.4
Brita Elite Pitcher (10-Cup)
A pour-through pitcher whose Elite filter is certified to reduce lead, mercury, cadmium and more, with a long 120-gallon cartridge.
pfas, lead
7.5
Culligan US-EZ-4 Under-Sink
An under-sink filter genuinely IAPMO certified to NSF/ANSI 42, 53 and 401 for lead, cysts, VOCs, mercury and PFOA/PFOS.
pfas, lead
7.2
Aquasana AQ-5200 Under-Sink
Certified for lead and PFAS, cheap per gallon, marketing matches the certified scope.
pfas, lead
4.9
ZeroWater 5-Stage Pitcher (7-Cup)
A five-stage ion-exchange pitcher certified for lead, chromium-6 and PFOA/PFOS - but a short 15-gallon filter makes it costly to run.
pfas, lead

FAQ

Is Connecticut tap water safe to drink?: If you're on a public system, it has to meet federal standards, per CT DPH. The bigger variable is private wells, where testing has found naturally occurring uranium and arsenic plus PFAS in some areas. So if you're on a well, getting it tested is the move, and if your home has older plumbing, keeping lead in mind is worth doing too.
Does Connecticut regulate PFAS in drinking water?: Partly. CT DPH set health-based action levels for ten PFAS compounds, adopted in 2022 and 2023, which is more than many states have. The honest caveat is that much of the public-system sampling has been voluntary, so the full extent of exceedances isn't fully known yet, and the picture should sharpen as testing expands.
Should I test my private well in Connecticut?: Yes, this is the one clear to-do. CT DPH and DEEP note that private wells can hold naturally occurring arsenic, uranium, and radium as well as PFAS, nitrates, and bacteria, and because private wells aren't federally regulated, no one tests them unless you do. Testing for those contaminants is the way to actually know what's in your water.

Sources

Not sure how to read your local report? See our guide on reading a water quality report.