trans-1,2-Dichloroethylene

Pleasantville Water District

NOTE: Pleasantville Water District purchases water from New Castle/Stanwood WD which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by New Castle/Stanwood WD.

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.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	1	ND
2015	N/A	0	N/A
2016	ND	2	ND
2017	ND	2	ND
2018	ND	2	ND
2019	ND	2	ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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

Date	Lab ID	Result
2014-12-01	AQ24569POC	ND
2016-01-07	AS00352POCS	ND
2016-09-06	AS19151	ND
2017-11-13	AT23821POC	ND
2017-11-13	AT23825POC	ND
2018-09-24	AU20755-POCS	ND
2018-09-24	AU20756-POCS	ND
2019-05-31	7091708-POCS-NC	ND
2019-11-12	AV23851-POCS-NC	ND