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Water Quality in Terryville, CT 06786

The water serving 06786 in Terryville has 5 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 5 contaminants affect your specific household members — babies, children, pregnant women, elderly, dogs, and cats.

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Key Facts About Terryville Water

Contaminants Detected

5

substances found in local water testing

Personalized For

11

household member types including pets

What Terryville Residents Should Know

Terryville's relatively low detection count of 5 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 Terryville, CT 06786 Water

Detected in public water testing for ZIP 06786, 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.

Tetrachloroethylene (PCE)OTHER
Detected in 100% of samples · EPA limit 0.005 mg/L
Trichloroethylene (TCE)OTHER
Detected in 100% of samples · EPA limit 0.005 mg/L
Vinyl ChlorideOTHER
Detected in 100% of samples · EPA limit 0.002 mg/L
cis-1,2-DichloroethyleneOTHER
Detected in 100% of samples
NitrateHAS_SAFE_LEVEL
Detected in 100% of samples · EPA limit 10 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 Terryville, CT 06786

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.

2
Dry-cleaner / solvent (PCE/TCE) sites
9
Open CT DEEP cleanup/remediation cases
19
Spills that reached water
6
Toxic-release (TRI) facilities
31
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 Terryville, CT?▾
Whether Terryville 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 06786 above to see your personalized risk assessment.
What contaminants are in 06786 water?▾
5 contaminants have been detected in the water serving ZIP code 06786. The ones most often above EPA limits or standards are Tetrachloroethylene (PCE), Trichloroethylene (TCE), Vinyl Chloride, cis-1,2-Dichloroethylene and Nitrate. 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 Terryville have well water data?▾
Yes, CheckYourTap covers both city water (public water systems) and private well water in Terryville and throughout Connecticut. Well water reports use USGS groundwater data and include geology-based risk factors for arsenic, uranium, and radon.

Nearby Areas

South Kent 06785Thomaston 06787Sherman 06784Roxbury 06783Plymouth 06782Torrington 06790
View all Connecticut water quality reports

About This Report

Water quality data for Terryville, CT 06786 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