Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Somers Consolidated Water District #1

NOTE: Somers Consolidated Water District #1 purchases water from Yorktown Consoldated Water District #1 which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Yorktown Consoldated Water District #1.

1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND30ND
2021ND30ND
2022ND30ND
2023ND70ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 60 ppb

The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

EPA Maximum Contaminant
Level (MCL): 100 ppb

The legal limit for trans-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

NOTE: Somers Consolidated Water District #1 purchases water from Yorktown Consoldated Water District #1 which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Yorktown Consoldated Water District #1.

Date Lab ID Result
2020-04-23AW07597-POCSND
2020-11-24AW22650-POCSND
2020-11-24AW22654-POCSND
2021-04-14AX07015-POCSND
2021-11-08AX23171-POCSND
2021-11-18AX23169-POCSND
2022-04-12AY06060-POCND
2022-04-12AY06060-POCSND
2022-11-01AY19737-POCSND
2022-11-01AY19732-POCSND
2023-04-03AZ05712-POCSND
2023-11-01AZ20246-POCSND
2023-11-01AZ20248-POCSND