National Drinking Water Database
cis-1,2-Dichloroethylene in Connecticut
cis-1,2-Dichloroethylene is a pollutant discharged by various industrial chemical factories from the manufacture of plastic wrap, adhesives and synthetic fiber. [read more]
The Most Polluted Communities in Connecticut
7 water utilities reported detecting cis-1,2-Dichloroethylene in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies
Ranked by highest average cis-1,2-Dichloroethylene level
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | CTWC - Shoreline Region-Latimer Point CT | 282 | 1 of 1 | 29 ppb (29 ppb) |
| 2 | 20 Station Road - Apt Building Brookfield, CT | 27 | 1 of 1 | 2.07 ppb (2.07 ppb) |
| 3 | Hill Hollow Association Middletown, CT | 48 | 3 of 4 | 1.13 ppb (0 to 1.6 ppb) |
| 4 | Valley Water Systems, Inc. Plainville, CT | 17,078 | 13 of 16 | 0.66 ppb (0 to 1.25 ppb) |
| 5 | East Hampton Wpca - Village Center East Hampton, CT | 366 | 7 of 16 | 0.5 ppb (0 to 2.5 ppb) |
| 6 | Berlin Water Control Commission Berlin, CT | 5,128 | 1 of 16 | 0.02 ppb (0 to 0.33 ppb) |
| 7 | Wallingford Water Department Wallingford, CT | 35,733 | 1 of 31 | 0.02 ppb (0 to 0.5 ppb) |
Health Based Limits for cis-1,2-Dichloroethylene
| Standard | Description | Level |
|---|---|---|
| Maximum Contaminant Limit (MCL) | The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency. | 70 ppb |
| Maximum Contaminant Limit Goal (MCLG) | A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency. | 70 ppb |
| Lifetime health-based limit, non-cancer risk | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency. | 70 ppb |
| Drinking Water Equivalent Level | A lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency. | 350 ppb |
| Children's health-based limit for 10-day exposure | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency. | 1000 ppb |
| Children's health-based limit for 1-day exposure | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency. | 4000 ppb |
Violation Summary for cis-1,2-Dichloroethylene in Connecticut
Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Connecticut since 2004
| Violation Type | Number of Violations |
|---|---|
| Failure to monitor regularly | 74 |