Is There Manganese in Fairfield, CT Water? (ZIP 06824)
By Alexander Snyder, Founder & Water Quality Data LeadLast reviewed July 2026
Yes. Manganese has been detected in the public water serving Fairfield, CT (ZIP 06824) in every sample tested — above the recommended standard in 7% of samples.
In Fairfield (06824), Manganese was detected in 100% of 60 samples across 4 water systems, most recently in 2020.
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 Manganese?
Manganese is a naturally occurring metal found in rock, soil, and sediment that dissolves into groundwater, particularly in low-oxygen conditions. It is common in well water throughout New England. The EPA health advisory level is 300 micrograms per liter. At elevated concentrations, manganese causes neurological effects, and children are especially susceptible to cognitive and behavioral impacts.
Who is most at risk in Fairfield?
Manganese matters most for infants — excess manganese is a recognized neurodevelopmental concern for infants. The safe level for these groups is stricter than for a healthy adult.
How to remove Manganese from your water
Install a whole-house oxidizing filter using manganese greensand, birm, or catalytic media, which oxidizes dissolved manganese and filters the resulting particles.
Use an oxidation step such as chlorine injection, potassium permanganate feed, or aeration followed by a sediment filter to convert dissolved manganese to insoluble particles.
For drinking water only, install a point-of-use reverse osmosis system certified to NSF/ANSI Standard 58, which removes dissolved manganese effectively at the kitchen tap.
Test your well water for both manganese and iron, as they often co-occur and the treatment approach may differ depending on the ratio.
See what Manganese means for your household
Get a free report personalized to the people in your home — infants, pregnancy, children, elderly, and pets.
Check 06824 Water NowHow Fairfield compares
Across Connecticut, Manganese is detected in 60 of the communities we track, and is above a limit or standard in 58. In Fairfield (06824), it was found in every sample tested, above the secondary standard in 7% of samples.
Manganese in nearby Connecticut towns:
Other contaminants of concern in Fairfield (06824)
Frequently Asked Questions
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About this report
Manganese detection data for Fairfield, CT (06824) is compiled from public records filed with the U.S. Environmental Protection Agency (EPA SDWIS), the U.S. Geological Survey (USGS NWIS), the Environmental Working Group (EWG) Tap Water Database, and the Connecticut Department of Public Health (CT DPH). Reviewed by CheckYourTap, a service of Valiant Energy Solutions, a Connecticut company established in 1930.
By Alexander Snyder, Founder & Water Quality Data Lead.
This report is general information, not medical advice or a substitute for certified laboratory testing. Talk to your pediatrician or physician about specific health concerns.
Last updated July 2026.
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