4%3a2 Fts in Connecticut Drinking Water
4%3a2 Fts has been detected in water systems serving many ZIP codes nationwide. Here is what you need to know about 4%3a2 fts in your drinking water and how it may affect your household.
Is 4%3a2 Fts in Your Water?
Enter your Connecticut ZIP code to find out if 4%3a2 fts is in your local water — and see personalized health risks for your household.
Check Your ZIP CodeWho Is Most Vulnerable to 4%3a2 Fts?
The safe level of 4%3a2 fts varies significantly depending on who is drinking the water. CheckYourTap calculates adjusted safe levels for each member of your household:
A contaminant level that is safe for an adult may exceed guidelines for an infant by 4-8x or more. Check your ZIP code to see personalized results.
Frequently Asked Questions
Is 4%3a2 Fts in my tap water?▾
What level of 4%3a2 Fts is safe?▾
How do I remove 4%3a2 Fts from my water?▾
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About This Report
This water quality report is compiled from public records filed with the U.S. Environmental Protection Agency, state health departments, and the U.S. Geological Survey. Contaminant levels are evaluated against EPA federal standards and health-based guidelines from leading environmental and public health organizations. CheckYourTap is a service of Valiant Energy Solutions, a Connecticut water quality and energy services company established in 1930.
Last updated March 2026