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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Wee Wood Park

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND20ND
2016ND30ND
2017ND40ND
2018ND100ND
2019ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for cis-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
2015-04-27POCS 15 WEE WOODND
2015-11-194THQT 2015 WEE WND
2016-03-241STQT16 POC WEEWND
2016-06-232NDQT16 POC WEEWND
2016-08-223RDQT POCS WEE WND
2017-04-192NDQT17 RAW WEEWND
2017-04-192NDQT17 TREAT WEND
2017-08-103RDQT17 POCS WEEND
2017-11-29POCS 4THQTR WEEWND
2018-02-22POCS 2018 WEE WOND
2018-02-27Q1 18 RAW POCS WND
2018-02-27Q1 18 TRT POCS WND
2018-03-29POCS 18 WEE WOODND
2018-05-10Q2 18 TRT POCS WND
2018-05-10Q2 18 RAW POCS WND
2018-09-25Q3 18 RAW POCS WND
2018-09-25Q3 18 TRT POCS WND
2018-11-27Q4 18 RAW POCS WND
2018-11-27Q4 18 TRT POCS WND
2019-02-19Q1 19 RAW POCS WND
2019-02-19Q1 19 TRT POCS WND
2019-05-28Q2 19 TRT POCS WND
2019-07-24Q3 19 POCS WEE WND
2019-10-03Q4 19 POCS WEE WND