cis-1,2-Dichloroethylene
Natick 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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 22 | 0 | ND |
2015 | ND | 22 | 0 | ND |
2016 | ND | 22 | 0 | ND |
2017 | ND | 23 | 0 | ND |
2018 | ND | 23 | 0 | ND |
2019 | 0.0533 ppb | 21 | 1 | ND - 1.12 ppb |
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 | Result |
---|---|
2014-01-14 | ND |
2014-01-14 | ND |
2014-01-14 | ND |
2014-02-04 | ND |
2014-03-04 | ND |
2014-04-01 | ND |
2014-05-06 | ND |
2014-05-06 | ND |
2014-05-13 | ND |
2014-06-03 | ND |
2014-07-01 | ND |
2014-08-05 | ND |
2014-08-06 | ND |
2014-08-06 | ND |
2014-09-02 | ND |
2014-09-03 | ND |
2014-10-14 | ND |
2014-10-14 | ND |
2014-10-14 | ND |
2014-10-14 | ND |
2014-11-04 | ND |
2014-12-02 | ND |
2015-01-13 | ND |
2015-01-13 | ND |
2015-01-13 | ND |
2015-02-03 | ND |
2015-03-03 | ND |
2015-04-07 | ND |
2015-04-22 | ND |
2015-04-22 | ND |
2015-04-22 | ND |
2015-05-05 | ND |
2015-06-03 | ND |
2015-07-07 | ND |
2015-08-04 | ND |
2015-08-04 | ND |
2015-08-04 | ND |
2015-09-01 | ND |
2015-10-07 | ND |
2015-11-03 | ND |
2015-11-03 | ND |
2015-11-03 | ND |
2015-11-03 | ND |
2015-12-09 | ND |
2016-01-06 | ND |
2016-02-02 | ND |
2016-02-02 | ND |
2016-02-02 | ND |
2016-02-02 | ND |
2016-03-01 | ND |
2016-04-13 | ND |
2016-05-03 | ND |
2016-05-03 | ND |
2016-05-03 | ND |
2016-06-08 | ND |
2016-07-06 | ND |
2016-08-02 | ND |
2016-08-02 | ND |
2016-08-02 | ND |
2016-09-07 | ND |
2016-10-04 | ND |
2016-11-01 | ND |
2016-11-01 | ND |
2016-11-01 | ND |
2016-11-01 | ND |
2016-12-06 | ND |
2017-01-10 | ND |
2017-02-08 | ND |
2017-02-08 | ND |
2017-02-08 | ND |
2017-03-07 | ND |
2017-04-05 | ND |
2017-05-03 | ND |
2017-05-03 | ND |
2017-05-03 | ND |
2017-05-03 | ND |
2017-06-07 | ND |
2017-07-05 | ND |
2017-08-01 | ND |
2017-08-09 | ND |
2017-08-09 | ND |
2017-08-09 | ND |
2017-09-05 | ND |
2017-10-03 | ND |
2017-11-08 | ND |
2017-11-08 | ND |
2017-11-08 | ND |
2017-11-08 | ND |
2017-12-05 | ND |
2018-01-03 | ND |
2018-02-08 | ND |
2018-02-08 | ND |
2018-02-08 | ND |
2018-03-12 | ND |
2018-04-03 | ND |
2018-05-01 | ND |
2018-05-08 | ND |
2018-05-08 | ND |
2018-05-08 | ND |
2018-06-05 | ND |
2018-07-10 | ND |
2018-07-10 | ND |
2018-07-10 | ND |
2018-07-10 | ND |
2018-08-07 | ND |
2018-09-04 | ND |
2018-10-02 | ND |
2018-11-06 | ND |
2018-11-06 | ND |
2018-11-06 | ND |
2018-11-06 | ND |
2018-12-04 | ND |
2019-01-02 | ND |
2019-02-05 | ND |
2019-02-05 | ND |
2019-02-05 | ND |
2019-02-19 | ND |
2019-03-12 | ND |
2019-04-02 | ND |
2019-05-07 | ND |
2019-05-07 | ND |
2019-05-15 | ND |
2019-07-02 | ND |
2019-08-06 | ND |
2019-08-06 | ND |
2019-08-06 | ND |
2019-09-03 | ND |
2019-11-05 | ND |
2019-11-05 | ND |
2019-11-05 | ND |
2019-11-05 | ND |
2019-11-12 | ND |
2019-12-10 | 1.12 ppb |