Watercolour of a small house at dusk, with the water meter cover in the sidewalk out front.

Is there lead in Darien's tap water?

NO LEADfound in Aquarion-Eastern Fairfield County's water at the latest test, in 2026

Too little lead to measure

Water companies that supply Darien

4 public water companies list Darien as a place they supply. The biggest is Aquarion-Eastern Fairfield County, with about 351,756 people. The highest latest result among Darien's water companies is 2 parts per billion, at Aquarion-Darien. None of the 4 with results was above 15 at its latest test. 3 found too little lead to measure.

Aquarion-Eastern Fairfield Countyabout 351,756 people · latest lead test: none found · 203-926-4320
Aquarion-Stamfordabout 119,214 people · latest lead test: none found · 203-926-4320
South Norwalk Electric & Waterabout 42,000 people · latest lead test: none found · 203-866-3366
Aquarion-Darienabout 18,737 people · latest lead test: 2 · 203-926-4320

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