06855
Norwalk, CT
Western Connecticut County · Bridgeport-Stamford-Danbury, CT metro area
NORWALK FIRST TAXING DISTRICT

Is tap water in East Norwalk (06855) safe to drink?

Higher concern
Last tested: June 2025
Source: Official EPA UCMR5 federal monitoring data. Last tested June 2025.
Neighborhoods:
  • East Norwalk
  • Marvin Beach
  • Norwalk

The short answer for East Norwalk (06855)

Norwalk tap water has 6 contaminants above EPA guidelines, including PFOS at 2.8× the limit (tested June 2024). See the full compound-by-compound breakdown and filter recommendations.

The health risk for Norwalk

PFAS ('forever chemicals') have been detected above EPA limits in this water system's most recent tests. These synthetic chemicals do not break down in the body and are linked to a range of health effects. A certified filter is strongly recommended.
  • PFBS, PFHxS, PFOA, PFOS, PFPeA above limit.
PFOS concentration (µg/L) June 2024
0 µg/L 0.004 µg/L 0.02 µg/L
0.011 µg/L
Detected
µg/L
0.004 µg/L
EPA limit
guideline
180% above limit
Comparison
vs. guideline
EPA limit: 0.004 µg/L | Your water: 0.011 µg/L
Certified Filters for Norwalk Tap Water

PFOS (a PFAS 'forever chemical') was detected above EPA limits. These filters are independently certified to reduce common drinking-water contaminants.

Water filter recommendation for Norwalk tap water: Epic Pure XP Water Filter Pitcher
Pitcher filter
Epic Pure XP Water Filter Pitcher
NSF-certified dual-layer filtration reduces 70+ contaminants including PFAS, lead, chlorine, microplastics, and bacteria.
NSF/ANSI 42, 53, 401 & P473Removes 99.99% PFASMade in USABPA-free
Best for renters or quick setup. No installation needed.
Get the Epic Pure XP →
Most elevated compounds
Compound Measurement EPA Limit Comparison
PFOS
Tested: June 2024 · Norwalk Water Dept. Wells		 0.011 µg/L 0.004 µg/L 180% above limit
PFOA
Tested: June 2024 · Norwalk Water Dept. Wells		 0.009 µg/L 0.004 µg/L 138% above limit
PFBS
Tested: June 2024 · Norwalk Water Dept. Wells		 0.006 µg/L 0.003 µg/L 113% above limit
PFPeA
Tested: June 2024 · Norwalk Water Dept. Wells		 0.005 µg/L 0.003 µg/L 80% above limit
PFHxS
Tested: June 2024 · Norwalk Water Dept. Wells		 0.004 µg/L 0.004 µg/L 5% above limit
View all tested compounds

Norwalk Water Dept. Wells · Tested: Multiple dates

Compound Measurement EPA Limit Comparison
PFOS 0.011 µg/L 0.004 µg/L 180% above limit
PFOA 0.009 µg/L 0.004 µg/L 138% above limit
PFBS 0.006 µg/L 0.003 µg/L 113% above limit
PFPeA 0.005 µg/L 0.003 µg/L 80% above limit
PFHxS 0.004 µg/L 0.004 µg/L 5% above limit
PFHxA 0.005 µg/L 3 µg/L 0.2% of limit
lithium <9.000 µg/L 10 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Norwalk Water Filtration Plant · Tested: Multiple dates

Compound Measurement EPA Limit Comparison
PFOA 0.004 µg/L 0.004 µg/L 3% above limit
PFPeA 0.003 µg/L 0.003 µg/L 100% of limit
lithium <9.000 µg/L 10 µg/L Below limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Filtration Plant · Tested: June 2025

Compound Measurement EPA Limit Comparison
lithium <9.000 µg/L 10 µg/L Below limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Water utilities serving ZIP 06855

Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.

Modeled boundaries are shown with a dashed outline.

Frequently Asked Questions about ZIP 06855 Tap Water

What contaminants are above EPA limits in ZIP 06855?

ZIP 06855 has 6 contaminants above EPA health guidelines in the latest available data, including PFOS at 2.8x the EPA guideline. The full table on this page lists every tested compound and its measured level.

Will boiling ZIP 06855 tap water remove PFOS?

No. Boiling does not remove PFAS, and the compounds can actually become more concentrated as water evaporates. To reduce PFAS at home, use a filter independently certified to NSF/ANSI P473 (activated-carbon pitcher or under-sink) or NSF/ANSI 58 (reverse osmosis).

Do basic pitcher filters remove PFOS?

Most basic pitcher filters are only certified to NSF/ANSI 42 or 53, which do not cover PFAS. Look for a filter independently certified to NSF/ANSI P473 (activated-carbon pitcher or under-sink) or NSF/ANSI 58 (reverse osmosis) on the spec sheet.

Who provides tap water in ZIP 06855?

Public records identify NORWALK FIRST TAXING DISTRICT as a primary water system associated with ZIP 06855. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 06855 tap water last tested?

The most recent test date used in this report is June 2025. EnviroClarity last refreshed this page on 2026-05-05.

Where can I find the official water quality report for ZIP 06855?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact NORWALK FIRST TAXING DISTRICT or visit their website for the latest official report covering ZIP 06855. The EPA also maintains a national CCR locator.

Primary source EPA UCMR5 (2023-2025)
Guideline source EPA PFAS drinking water standard (PFOS: 0,004 µg/L, effective 2024, compliance by 2031)
Last tested June 2025
Last page update 2026-05-05

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    Nearby ZIP reports

    Data reflects publicly reported utility records from EPA datasets and local utility disclosures. This information is educational and not medical advice.

    Protect your water in Norwalk → see certified filters