Is There PFHxA in Greenwich, CT Water? (ZIP 06807)
Yes. PFHxA has been detected in the public water serving Greenwich, CT (ZIP 06807) in 75% of samples — a contaminant with no established safe level, so any detection matters.
Federal legal limits and stricter health guidelines are not the same — enter your household below for a report on what this means for the specific people in your home.
What is PFHxA?
PFHxA (perfluorohexanoic acid) is a six-carbon short-chain PFAS compound commonly detected in water supplies near industrial and military sites. It enters water through firefighting foam residues, industrial discharge, and degradation of longer-chain PFAS products. No EPA maximum contaminant level has been set. It is environmentally persistent and associated with liver effects, kidney changes, and potential developmental harm.
Who is most at risk in Greenwich?
PFHxA matters most for infants, pregnancy — 'forever chemicals' linked to developmental and immune effects; can transfer through the placenta and breast milk. The safe level for these groups is stricter than for a healthy adult.
How to remove PFHxA from your water
Install a reverse osmosis system certified to NSF/ANSI Standard 58, which effectively removes PFHxA and other short-to-mid-chain PFAS from drinking water.
Use an activated carbon block filter certified to NSF/ANSI Standard 53 for PFAS reduction; PFHxA as a six-carbon compound has moderate affinity for carbon media.
Ion exchange resin systems designed for PFAS removal can supplement carbon filtration for PFHxA at whole-house treatment volumes.
Test water using EPA Method 533 to detect PFHxA and verify your filtration system performance every 6 to 12 months.
See what PFHxA means for your household
Get a free report personalized to the people in your home — infants, pregnancy, children, elderly, and pets.
Check 06807 Water NowHow Greenwich compares
Across Connecticut, PFHxA is detected in 11 of the communities we track. In Greenwich (06807), it was found in 75% of samples.
PFHxA in nearby Connecticut towns:
Other contaminants of concern in Greenwich (06807)
Last updated July 2026.