Is Danbury tap water safe to drink?

Yes with good quality

Danbury's tap water meets all EPA standards and scores well on our analysis. It is generally safe to drink though filtration can improve taste and provide extra precaution.

82/100
Purity Score
2
Issues Found
3.4 GPG
Hardness
Not detected
PFAS

2 Issues Detected in Danbury

Moderate Chlorine Level

Chlorine within EPA limits but may affect taste.

Chlorine info for Danbury

Arsenic Approaching Limit (0.2 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Danbury
Connecticut

68,100,681,106,813 · Margerie Reservoir

Danbury Water Safety and Contaminant Report

Low Risk Updated March 2026 86,518 residents
See Best Filters for Danbury
82
Purity Score

Water quality in Danbury, Connecticut is evaluated here using public utility data and independent testing. The report includes a purity score, contaminant breakdown, and tailored filter recommendations.

Contaminant Levels

PFAS
ND
Lead
4.8 ppb
Nitrate
0.4 mg/L
Arsenic
0.2 mg/L
Hardness
3.4 gpg

Health Insights

  • 1
    Chlorine levels may affect the taste of Danbury's tap water. A carbon filter improves flavor.

Score

82 /100
Good
"Good" threshold (70)

Danbury tap water is sourced from Margerie Reservoir and treated by Danbury Water Department. Overall purity score: 82/100 (Good). Updated for 2026.

Fix Your Water

Best filters matched to Danbury's 2 issues.

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Explore Danbury Water Data

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Danbury Water FAQ

Is Danbury CT tap water safe to drink in 2026?
Danbury tap water meets EPA federal drinking water standards and scores 82/100 (Good) on PurityMap for 2026. For most healthy adults the water is considered safe but point-of-use filtration adds an important layer of protection.
Does Danbury CT use chlorine or chloramine for disinfection?
Danbury uses chloramine as the primary disinfectant with a residual level of 1.2 ppm. Chloramine is harder to remove than free chlorine and requires a catalytic carbon or reverse osmosis filter. Standard Brita-style pitchers will NOT remove chloramine.
How hard is Danbury CT water and what is the TDS level?
Danbury water hardness is 3.4 grains per gallon (soft) with a TDS of 115 ppm (good). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in Danbury CT drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Danbury drinking water.
What is the best water filter for Danbury?
Based on Danbury's water profile, we recommend the Clearly Filtered Water Pitcher. Danbury has elevated chlorine residuals. An under-sink carbon filter removes chlorine and disinfection byproducts at the tap.

Nearby Reports

BridgeportConnecticut — 77/100WaterburyConnecticut — 77/100New HavenConnecticut — 82/100HartfordConnecticut — 82/100StamfordConnecticut — 82/100NorwalkConnecticut — 82/100

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • Danbury Water Department CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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