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Water Quality in Portland, CT 06480

44 contaminants have been detected in the water supply serving 06480 in Portland, CT — well above the state average of 24. At this level, multiple contaminants may exceed health-based guidelines even if they remain within federal legal limits. A personalized report can show which specific substances pose the greatest concern for who actually lives in your home.

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See how 44 contaminants affect your specific household members — babies, children, pregnant women, elderly, dogs, and cats.

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Key Facts About Portland Water

Contaminants Detected

44

substances found in local water testing

Personalized For

11

household member types including pets

What Portland Residents Should Know

With 44 contaminants detected, Portland's water supply warrants careful review — particularly for households with young children or pregnant women. Federal legal limits (MCLs) were set decades ago for many substances and don't account for newer research on low-dose chronic exposure. Health guidelines from independent researchers are often 10x to 100x stricter.

Common Contaminants in Connecticut Water

These are among the most frequently detected contaminants across Connecticut public water systems. Your specific results for 06480 may vary.

NitrateInorganics
CopperInorganics
LeadHeavy Metals
BariumInorganics
FluorideInorganics
Nitrate-NitriteInorganics
ArsenicInorganics
CadmiumInorganics

Frequently Asked Questions

Is the tap water safe to drink in Portland, CT?▾
Whether Portland tap water is safe depends on your household. While it may meet federal legal limits, many contaminants are present at levels above stricter health guidelines — especially for vulnerable groups like infants, pregnant women, and elderly residents. Enter your ZIP code 06480 above to see your personalized risk assessment.
What contaminants are in 06480 water?▾
44 contaminants have been detected in the water serving ZIP code 06480. Common findings in Connecticut include lead, PFAS (forever chemicals), disinfection byproducts, nitrates, and arsenic. Get your full report to see which ones affect your household.
Is CheckYourTap free?▾
Yes, CheckYourTap is completely free. Enter your ZIP code and tell us who lives in your home to get a personalized water quality report with health risk assessments for 120+ contaminants.
Does Portland have well water data?▾
Yes, CheckYourTap covers both city water (public water systems) and private well water in Portland and throughout Connecticut. Well water reports use USGS groundwater data and include geology-based risk factors for arsenic, uranium, and radon.

Nearby Areas

Rockfall 06481Oxford 06478Sandy Hook 06482Orange 06477Oxford 06483Shelton 06484
View all Connecticut water quality reports

About This Report

Water quality data for Portland, CT 06480 is compiled from public records filed with the U.S. Environmental Protection Agency (EPA SDWIS), the U.S. Geological Survey (USGS NWIS), and the Connecticut Department of Public Health. Health guidelines reference the strictest available standards from the EWG, California OEHHA, and WHO. Risk assessments are personalized for 11 household member types. CheckYourTap is a service of Valiant Energy Solutions, a Connecticut company established in 1930.

Last updated March 2026