Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Andrews Water Department

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.

 

42

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
20201.50 ppb52ND - 3.80 ppb
20211.85 ppb125ND - 5.30 ppb
20221.94 ppb169ND - 5.00 ppb
20231.88 ppb94ND - 4.53 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2020-06-22DK351153.70 ppb
2020-06-2750261040001ND
2020-07-2320072479-001ND
2020-09-1020091027-002ND
2020-11-2320112107-002AREV23.80 ppb
2021-02-1021021011-001A3.80 ppb
2021-05-1021050821-001A3.90 ppb
2021-07-2021071758-001A4.40 ppb
2021-08-1821081685-001A5.30 ppb
2021-08-2021082037-002AND
2021-08-2021082037-003AND
2021-08-2021082037-004AND
2021-08-2021082037-001AND
2021-11-2221112028-002AND
2021-11-2221112028-001A4.80 ppb
2021-12-0221120159-001AND
2021-12-0221120159-002AND
2022-01-2622011891-001A4.80 ppb
2022-01-2622011891-002A0.400 ppb
2022-02-1522020997-004A0.300 ppb
2022-02-1522020997-003A5.00 ppb
2022-05-23112708-2ND
2022-05-23112708-14.14 ppb
2022-08-16122459-13.92 ppb
2022-08-16122459-2ND
2022-11-17132023-13.94 ppb
2022-11-29132892-14.30 ppb
2022-11-29132892-3ND
2022-11-29132892-2ND
2022-12-02133268-2ND
2022-12-02133268-1ND
2022-12-08133928-2ND
2022-12-08133928-14.21 ppb
2023-01-24138157-13.94 ppb
2023-01-24138157-2ND
2023-05-08148546-14.31 ppb
2023-05-08148546-2ND
2023-08-23160623-2ND
2023-08-23160623-44.53 ppb
2023-08-23160623-5ND
2023-11-21169747-14.15 ppb
2023-11-21169747-2ND