Is my tap water safe to drink in Connecticut?

It depends on your ZIP code and who lives in your home. CheckYourTap analyzes 120+ contaminants in your local water supply and shows which ones exceed health guidelines — not just legal limits. Many contaminants are legal but still pose health risks, especially for babies, pregnant women, elderly, and pets.

What contaminants are in Connecticut tap water?

Connecticut tap water commonly contains disinfection byproducts (haloacetic acids, trihalomethanes), lead from aging pipes, PFAS (forever chemicals), nitrates, arsenic, and radionuclides like radium. The specific contaminants and levels vary by water system — enter your ZIP code to see your local results.

How does CheckYourTap differ from EWG or other water quality databases?

CheckYourTap is the only water quality report personalized for your household composition. Tell us who lives in your home — babies, children, pregnant women, elderly, dogs, or cats — and we calculate adjusted safe levels for each person. A contaminant safe for adults may exceed guidelines for infants by 8x or more.

Is CheckYourTap free?

Yes, CheckYourTap is completely free. Enter your Connecticut ZIP code and household members to get a personalized water quality report with health risk assessments for 120+ contaminants.

Does CheckYourTap cover well water in Connecticut?

Yes. CheckYourTap covers both city water (public water systems) and private well water in Connecticut. Well water reports use USGS groundwater data and include geology-based risk factors for arsenic, uranium, and radon specific to your area.

Inorganics

Fluoride in Connecticut Drinking Water

Fluoride has been detected in water systems serving 12,026 ZIP codes nationwide. Here is what you need to know about fluoride in your drinking water and how it may affect your household.

What Is Fluoride?

Fluoride is a mineral added to many public water supplies at 0.7 milligrams per liter to support dental health, though it also occurs naturally in groundwater from fluoride-bearing rock. The EPA maximum contaminant level is 4 milligrams per liter, with a secondary standard of 2 mg/L. At concentrations above 2 mg/L, prolonged exposure causes dental fluorosis in children and may contribute to skeletal fluorosis in adults.

Is Fluoride in Your Water?

Enter your Connecticut ZIP code to find out if fluoride is in your local water — and see personalized health risks for your household.

Check Your ZIP Code

Health Effects of Fluoride

Bone disease (pain and tenderness of the bones); children may get mottled teeth

Safety Guidelines

Health Guideline

1 mg/L

Source: CA_OEHHA_PHG

Legal Limit (MCL)

4 mg/L

EPA Maximum Contaminant Level

Where Does Fluoride Come From?

Water additive which promotes strong teeth; erosion of natural deposits; discharge from fertilizer and aluminum factories

How to Reduce Fluoride in Your Water

1Install a reverse osmosis system certified to NSF/ANSI Standard 58 for fluoride reduction, which removes approximately 85 to 92% of fluoride from drinking water.
2Use a point-of-use filter with activated alumina media, which adsorbs fluoride effectively at slightly acidic pH levels and is available in under-sink and countertop configurations.
3Bone char carbon filters are an alternative adsorptive media that reduces fluoride, though they require more frequent replacement than activated alumina.
4Standard activated carbon filters, pitcher filters, and boiling do not reduce fluoride levels; always verify that the product is independently tested and certified for fluoride removal.

Who Is Most Vulnerable to Fluoride?

The safe level of fluoride varies significantly depending on who is drinking the water. CheckYourTap calculates adjusted safe levels for each member of your household:

Infants (under 1 year)

Toddlers (1-3 years)

Children (4-11 years)

Pregnant women

Elderly (65+)

Adults

Dogs

Cats

A contaminant level that is safe for an adult may exceed guidelines for an infant by 4-8x or more. Check your ZIP code to see personalized results.

Frequently Asked Questions

Is Fluoride in my tap water?▾

Fluoride has been detected in water systems across 12,026 ZIP codes. Whether it's in your specific water depends on your local water system. Enter your CT ZIP code at CheckYourTap.com for a free, instant report.

What level of Fluoride is safe?▾

The safe level depends on who is drinking the water. The health guideline is 1 mg/L, but infants, pregnant women, and pets may need much lower levels. CheckYourTap calculates adjusted safe levels for 11 different household member types.

How do I remove Fluoride from my water?▾

Install a reverse osmosis system certified to NSF/ANSI Standard 58 for fluoride reduction, which removes approximately 85 to 92% of fluoride from drinking water. Use a point-of-use filter with activated alumina media, which adsorbs fluoride effectively at slightly acidic pH levels and is available in under-sink and countertop configurations. For a personalized consultation, contact Valiant Energy Solutions at (475) 557-5107.

Related Contaminants

Nitrate Copper Lead Barium Nitrate-Nitrite

Check Water Quality by ZIP Code

Hartford 06103 New Haven 06510 Bridgeport 06604 Stamford 06901 Waterbury 06702 Norwalk 06850 Danbury 06810 Manchester 06040 View all cities →

View all contaminants in Connecticut water

About This Report

This water quality report is compiled from public records filed with the U.S. Environmental Protection Agency, state health departments, and the U.S. Geological Survey. Contaminant levels are evaluated against EPA federal standards and health-based guidelines from leading environmental and public health organizations. CheckYourTap is a service of Valiant Energy Solutions, a Connecticut water quality and energy services company established in 1930.

EPA SDWISUSGS NWISEWG Tap Water DatabaseCA OEHHA Public Health GoalsWHO Drinking Water Guidelines

Last updated March 2026