1,1-Dichloroethylene
North Wales Water Authority
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
77
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 12 | 0 | ND |
| 2015 | ND | 13 | 0 | ND |
| 2016 | ND | 14 | 0 | ND |
| 2017 | ND | 13 | 0 | ND |
| 2018 | ND | 13 | 0 | ND |
| 2019 | ND | 12 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-03-04 | 20140745 | ND |
| 2014-03-17 | 20140959 | ND |
| 2014-03-17 | 20140958 | ND |
| 2014-03-17 | 20140966 | ND |
| 2014-03-17 | 20140965 | ND |
| 2014-03-17 | 20140964 | ND |
| 2014-03-17 | 20140963 | ND |
| 2014-03-17 | 20140962 | ND |
| 2014-03-17 | 20140961 | ND |
| 2014-03-17 | 20140960 | ND |
| 2014-06-10 | 20141963 | ND |
| 2014-08-05 | 20142640 | ND |
| 2015-03-10 | 12516864 | ND |
| 2015-03-16 | 12516759 | ND |
| 2015-03-16 | 12516843 | ND |
| 2015-03-16 | 12516822 | ND |
| 2015-03-16 | 12516801 | ND |
| 2015-03-16 | 12516780 | ND |
| 2015-03-16 | 12516738 | ND |
| 2015-03-16 | 12516717 | ND |
| 2015-03-16 | 12516696 | ND |
| 2015-03-16 | 12516675 | ND |
| 2015-07-06 | 13014446 | ND |
| 2015-09-14 | 13265886 | ND |
| 2015-12-01 | 13634669 | ND |
| 2016-03-07 | 13987494 | ND |
| 2016-03-14 | 13987431 | ND |
| 2016-03-14 | 13987473 | ND |
| 2016-03-14 | 13987452 | ND |
| 2016-03-14 | 13987410 | ND |
| 2016-03-14 | 13987389 | ND |
| 2016-03-14 | 13987368 | ND |
| 2016-03-14 | 13987347 | ND |
| 2016-03-14 | 13987326 | ND |
| 2016-03-14 | 13987305 | ND |
| 2016-06-07 | 14407375 | ND |
| 2016-06-29 | 14407402 | ND |
| 2016-09-06 | 14909851 | ND |
| 2016-12-06 | 15374019 | ND |
| 2017-03-16 | 15797862 | ND |
| 2017-05-01 | 16096368 | ND |
| 2017-05-01 | 16096347 | ND |
| 2017-05-01 | 16096284 | ND |
| 2017-05-01 | 16096452 | ND |
| 2017-05-01 | 16096305 | ND |
| 2017-05-01 | 16096431 | ND |
| 2017-05-01 | 16096410 | ND |
| 2017-05-01 | 16096326 | ND |
| 2017-05-01 | 16096389 | ND |
| 2017-06-06 | 16259053 | ND |
| 2017-09-05 | 16728653 | ND |
| 2017-12-05 | 17163815 | ND |
| 2018-03-12 | 20180936 | ND |
| 2018-03-12 | 20180937 | ND |
| 2018-03-12 | 20180935 | ND |
| 2018-03-12 | 20180938 | ND |
| 2018-03-12 | 20180934 | ND |
| 2018-03-12 | 20180939 | ND |
| 2018-03-12 | 20180933 | ND |
| 2018-03-12 | 20180940 | ND |
| 2018-03-12 | 20180932 | ND |
| 2018-03-13 | 20180956 | ND |
| 2018-06-05 | 20182148 | ND |
| 2018-09-04 | 20183373 | ND |
| 2018-12-18 | 20184775 | ND |
| 2019-03-05 | 20190857 | ND |
| 2019-03-12 | 20190961 | ND |
| 2019-03-12 | 20190960 | ND |
| 2019-03-12 | 20190962 | ND |
| 2019-03-12 | 20190959 | ND |
| 2019-03-12 | 20190963 | ND |
| 2019-03-12 | 20190958 | ND |
| 2019-03-12 | 20190964 | ND |
| 2019-03-12 | 20190957 | ND |
| 2019-03-12 | 20190956 | ND |
| 2019-09-03 | 20193443 | ND |
| 2019-12-03 | 20194748 | ND |