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Cleaner Water From Every Tap
What's in Norwalk's Water?
The numbers your water utility reports, in plain sight
Norwalk's tap water comes from South Norwalk Electric and Water, serving 42,000 people. In the most recent reported data, 21 contaminants were detected, and 8 of them exceed EWG health guidelines. Here's what that means for your house.
Reported levels, 2014-2024
8 contaminants above EWG health guidelines
| Contaminant | Detected level | Over EWG guideline | Potential effect |
|---|---|---|---|
| Total trihalomethanes (TTHMs) | 48.5 ppb | 324x | Linked to cancer risk |
| Haloacetic acids (HAA9) | 18.4 ppb | 307x | Linked to cancer risk |
| Haloacetic acids (HAA5) | 19.2 ppb | 192x | Linked to cancer risk |
| Bromodichloromethane | 8.77 ppb | 146x | Linked to cancer risk |
| Trichloroacetic acid | 11.8 ppb | 118x | Linked to cancer risk |
| Chloroform | 36.9 ppb | 92x | Linked to cancer risk |
| Dichloroacetic acid | 6.69 ppb | 33x | Linked to cancer risk |
| Dibromochloromethane | 1.35 ppb | 14x | Linked to cancer risk |
To be fair to the utility: these levels comply with federal legal limits where limits exist. What they exceed are EWG's stricter health guidelines, which are based on current health research rather than regulatory compromise. See the full utility report at EWG's Tap Water Database. Data period 2014-2024. Figures read 2026-08-27.
The part that matters for your house
Utility numbers are the starting point, not your answer
These are system-wide averages. What comes out of your tap depends on your pipes, your neighborhood, and whether you are on city water or a private well. The only way to know what your family is actually drinking is to test the water at your own faucet.
ClearCrest Water Solutions runs that test free anywhere in Norwalk, explains the results in plain English, and only then recommends treatment, sized to what your water actually shows.
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Tell us about your water
Send us a few details and we will get back to you with a straight answer about what your home needs. Prefer to talk? Call (203) 461-2253.
Or call us directly at (203) 461-2253