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Water Quality in South Lyme, CT 06376

The water serving 06376 in South Lyme has 2 detected contaminants — well below the state average. Fewer detections doesn't necessarily mean safer water; even a single contaminant above health guidelines can pose risks, particularly for infants and immunocompromised individuals. A personalized report shows exactly where your household stands.

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See how 2 contaminants affect your specific household members — babies, children, pregnant women, elderly, dogs, and cats.

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Key Facts About South Lyme Water

Contaminants Detected

2

substances found in local water testing

Personalized For

11

household member types including pets

What South Lyme Residents Should Know

South Lyme's relatively low detection count of 2 is a positive sign, but it's worth checking the specifics. Contaminants like PFAS (forever chemicals) have extremely low health guidelines — parts per trillion — and even one substance above its health guideline can be meaningful. Well water users should also consider geology-based risks for arsenic and radon that may not appear in public system testing.

Contaminants Detected in South Lyme, CT 06376 Water

Detected in public water testing for ZIP 06376, ranked by how often samples were above the EPA limit. Enforceable health limits are shown in red; secondary (aesthetic) standards like manganese are advisory, not legal limits.

NitrateHAS_SAFE_LEVEL
Detected in 100% of samples · EPA limit 10 mg/L as N
NitriteHAS_SAFE_LEVEL
Detected in 100% of samples · EPA limit 1 mg/L as N

Source: EPA SDWIS / UCMR public water testing. Detection and exceedance rates reflect samples in this area; enter your ZIP above for a report personalized to your household.

Environmental Sites Near South Lyme, CT 06376

Documented sites in or near this ZIP from EPA and CT DEEP records. These are most relevant for private-well owners as potential groundwater concerns — public water is treated and tested separately. Their presence near a ZIP does not by itself mean your drinking water is affected, but it’s a reason for well owners to test.

4
Open CT DEEP cleanup/remediation cases
6
Spills that reached water
6
Permitted (NPDES) dischargers

Compiled from EPA (SEMS/TRI/ECHO) and CT DEEP records; many are undated historical site inventories. Most recent dated event in this area: 2025-12-31.

Frequently Asked Questions

Is the tap water safe to drink in South Lyme, CT?▾
Whether South Lyme 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 06376 above to see your personalized risk assessment.
What contaminants are in 06376 water?▾
2 contaminants have been detected in the water serving ZIP code 06376. The ones most often above EPA limits or standards are Nitrate and Nitrite. 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 South Lyme have well water data?▾
Yes, CheckYourTap covers both city water (public water systems) and private well water in South Lyme and throughout Connecticut. Well water reports use USGS groundwater data and include geology-based risk factors for arsenic, uranium, and radon.

Nearby Areas

Quaker Hill 06375Sterling 06377Plainfield 06374Stonington 06378Oneco 06373Pawcatuck 06379
View all Connecticut water quality reports

About This Report

Water quality data for South Lyme, CT 06376 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