trans-1,2-Dichloroethylene
Paramount 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 | 11 | 0 | ND |
2015 | ND | 5 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 5 | 0 | ND |
2019 | ND | 6 | 0 | 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 |
---|---|---|
2014-02-27 | 9588-027-1001 | ND |
2014-02-27 | 9588-025-0954 | ND |
2014-04-28 | 9588-027-1034 | ND |
2014-04-28 | 9588-015-1100 | ND |
2014-04-28 | 9588-025-1032 | ND |
2014-04-28 | 9588-016-1127 | ND |
2014-04-28 | 9588-024-1106 | ND |
2014-07-29 | 9588-027-1035 | ND |
2014-07-29 | 9588-025-1020 | ND |
2014-10-29 | 9588-027-1020 | ND |
2014-10-29 | 9588-025-1027 | ND |
2015-01-29 | 9588-027-1531 | ND |
2015-01-29 | 9588-025-1527 | ND |
2015-04-27 | 9588-024-1006 | ND |
2015-04-27 | 9588-016-0945 | ND |
2015-04-27 | 9588-015-1003 | ND |
2016-01-29 | 9588-025-0948 | ND |
2016-01-29 | 9588-027-0954 | ND |
2016-04-29 | 9588-015-0956 | ND |
2016-04-29 | 9588-016-0923 | ND |
2016-04-29 | 9588-024-0959 | ND |
2017-01-23 | 9588-025-1045 | ND |
2017-01-23 | 9588-027-1047 | ND |
2017-04-03 | 9588-024-1112 | ND |
2017-04-03 | 9588-015-1124 | ND |
2017-04-03 | 9588-016-1020 | ND |
2018-01-08 | 9588-027-1136 | ND |
2018-01-08 | 9588-025-1130 | ND |
2018-04-09 | 9588-024-1046 | ND |
2018-04-09 | 9588-015-1041 | ND |
2018-04-16 | 9588-016-0940 | ND |
2019-01-07 | 9588-025-1028 | ND |
2019-03-20 | 9588-027-1030 | ND |
2019-03-20 | 9588-025-1025 | ND |
2019-04-03 | 9588-024-1040 | ND |
2019-04-03 | 9588-016-1010 | ND |
2019-04-03 | 9588-015-1035 | ND |