New Haven, CT

New Haven, CT

The City of New Haven is home to an estimated 131,014 residents, and it’s located in New Haven County, CT.

This report will help you become better acquainted with New Haven and the surrounding area by addressing the following questions:

  • Are there any hazardous sites in New Haven County, CT?
  • How clean is the air in New Haven County, CT?
  • What’s the average radon level for homes in New Haven County, CT?
  • Is the water in New Haven County, CT safe to drink?

Hazardous Sites near New Haven, CT

There are three Superfund sites in New Haven County, CT. Superfund sites, like Scovill Industrial Landfill in Waterbury, CT, are areas that have been contaminated with hazardous substances. If not for the cleanup efforts orchestrated by the EPA, these sites could endanger people living in nearby communities.

The EPA uses the Hazardous Ranking System (HRS) to quantify the risk a contaminated site poses to human health and the environment. Sites assigned HRS scores of 28.5 or greater qualify for placement on the National Priorities List (NPL), and are eligible to receive federal funding for cleanup efforts.

Before the EPA deletes a site from the NPL, it conducts reviews to ensure the cleanup was sufficient. As a result, some sites remain on the active site list long after cleanup activities are complete.

For more information about the Superfund sites located in the New Haven, CT area, be sure to review the map and background information provided below:

Map Legend:


A. Scovill Industrial Landfill (HRS Score: 50)

The Scovill Industrial Landfill site is located in Waterbury, CT.

Contaminants found at the Scovill Industrial Landfill site include:

  • Antimony
  • Arsenic
  • Chloroform
  • Chromium
  • Polychlorinated Biphenyls (PCBs)

B. Beacon Heights Landfill (HRS Score: 47)

The Beacon Heights Landfill site is located in Beacon Falls, CT.

Contaminants found at the Beacon Heights Landfill site include:

  • Benzene
  • Bis(2-Chloroethyl)Ether
  • 1,1-Dichloroethene
  • 2-Butanone (Methyl Ethyl Ketone)
  • Chloroethane

C. Laurel Park, Inc. (HRS Score: No Data)

The Laurel Park, Inc. site, home to a landfill beginning in the late 1940s, is located in Naugatuck Borough, CT.

Contaminants found at the Laurel Park, Inc. site include:

  • Arsenic
  • Benzene
  • Chloroform
  • Chromium
  • Lead

Air Quality in the New Haven, CT Area

The two most widespread forms of air pollution are ozone (smog) and particle pollution (soot). Exposure to these harmful pollutants, for even just a short period, can have adverse effects on your health.

Thanks to data collected by air monitoring equipment located across the country, the American Lung Association (ALA) is able to assess and track our air quality using three metrics:

  • Ozone
  • Short-term Particle Pollution
  • Year-round Particle Pollution

In their 2019 annual report, the ALA rated the air quality in New Haven County, CT as follows:

Ozone Pollution

Grading Scale: A-F

Particle Pollution

Grading Scale: A-F

Particle Pollution

Grading Scale: Pass/Fail

Radon Levels in New Haven, CT Area

Air quality inside your home can be impacted by a number of factors, including the presence of hazardous substances in building materials (asbestos, lead, formaldehyde, etc.) and local radon levels.

Radon is a naturally occurring gas you cannot see or smell. It can build up inside your home and negatively impact your indoor air quality as well as your health.

To provide a guideline, the EPA assigned one of three zones to each U.S. county and county equivalent:

  • Zone 1 (higher radon levels)
  • Zone 2 (moderate levels)
  • Zone 3 (lower levels)

The average indoor radon reading in New Haven County, CT is predicted to be higher than 4 picocuries per liter (pCi/L), so the county has been assigned EPA Radon Zone 1.

EPA Radon Zone

The EPA Recommends acting to reduce your home's radon level if it's measured at 4 pCi/L or greater. So, if you're thinking about purchasing a home in New Haven, CT, you should strongly consider having a radon test performed.

Water Quality in New Haven, CT Area

In accordance with the Safe Drinking Water Act (SDWA), the EPA sets regulatory limits for drinking water contaminants known to cause adverse health effects.

The following New Haven County, CT water provider(s) violated the maximum allowable level for one or more regulated contaminants:

Filter ValueWater SystemContaminantHealth Effects
09009Arrowhead By The Lake Association, Inc.Antimony, TotalIncrease in blood cholesterol; decrease in blood sugar
09009Ctwc - Legend Hill SystemCombined UraniumIncreased risk of cancer, kidney toxicity 
09009Ctwc - Naugatuck Reg - HillcrestTTHMLiver, kidney, or central nervous system problems; increased risk of cancer 
09009Meriden Water DivisionTotal Haloacetic Acids (HAA5)Increased risk of cancer 
09009Northford Glen Condominium AssociationNitrateInfants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome. 
09009Wolcott Water DepartmentTotal Haloacetic Acids (HAA5)Increased risk of cancer 

In addition to setting enforceable standards for harmful contaminants, the EPA also established guidelines to assist public water providers in managing the taste, odor and color of their drinking water.

To find out more about what’s in your drinking water, contact your utility company and request a copy of the latest Consumer Confidence Report.

Sources and Methods

Hazardous Sites: Identified using a report from the Environmental Protection Agency (EPA), hazardous sites detailed on represent sites contained on the National Priorities List (NPL) as of November 25, 2019.  The NPL is the list of national priorities among the known releases or threatened releases of hazardous substances, pollutants, or contaminants throughout the United States and its territories.  All site-related data was sourced from the EPA.

Air Quality: Grades for ozone, short-term particle pollution, and year-round particle pollution were obtained from State of the Air 2019, a report compiled by the American Lung Association.

Radon Zones: Radon zone designations were obtained using a public use dataset provided by the EPA (September 11, 2019).

Water Quality: Drinking water violation data was sourced from the Safe Drinking Water Information System (SDWIS), a public use database provided by the EPA.  The dataset included violations submitted to the database as of the third quarter of 2019.


I’ve moved several times over the years, so I know just how stressful it can be to relocate. I want to help put your mind at ease. That’s why I research and write about all the things I think you should consider when moving to a new town.

Recent Content