trans-1,2-Dichloroethylene
Yuima Municipal Water District Ida
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 9 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 18 | 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 |
|---|---|---|
| 2014-01-14 | 2706-012-0820 | ND |
| 2014-04-08 | 2706-044-0900 | ND |
| 2014-04-08 | 2706-012-1250 | ND |
| 2014-07-08 | 2706-043-0855 | ND |
| 2014-07-08 | 2706-031-1030 | ND |
| 2014-07-08 | 2706-012-1000 | ND |
| 2014-07-08 | 2706-006-1040 | ND |
| 2014-08-12 | 2706-045-1050 | ND |
| 2014-10-14 | 2706-012-1045 | ND |
| 2015-01-13 | 2706-012-0850 | ND |
| 2015-04-14 | 2706-012-0945 | ND |
| 2015-07-14 | 2706-005-1150 | ND |
| 2015-07-14 | 2706-012-1030 | ND |
| 2015-10-22 | 2706-012-1052 | ND |
| 2016-01-12 | 2706-012-0815 | ND |
| 2016-03-10 | 2706-048-1130 | ND |
| 2016-04-12 | 2706-012-1100 | ND |
| 2016-07-12 | 2706-012-0830 | ND |
| 2016-10-11 | 2706-012-1015 | ND |
| 2016-10-14 | 2706-048-1100 | ND |
| 2016-12-13 | 2706-048-1050 | ND |
| 2017-01-10 | 2706-012-1130 | ND |
| 2017-04-11 | 2706-012-1040 | ND |
| 2017-05-09 | 2706-048-1040 | ND |
| 2017-05-09 | 2706-037-1050 | ND |
| 2017-06-13 | 2706-029-1045 | ND |
| 2017-07-11 | 2706-011-0945 | ND |
| 2017-07-11 | 2706-006-1045 | ND |
| 2017-07-11 | 2706-048-0815 | ND |
| 2017-07-11 | 2706-004-0845 | ND |
| 2017-07-11 | 2706-047-0915 | ND |
| 2017-07-11 | 2706-032-0845 | ND |
| 2017-07-11 | 2706-033-0840 | ND |
| 2017-07-11 | 2706-020-0745 | ND |
| 2017-07-11 | 2706-031-1125 | ND |
| 2017-07-11 | 2706-028-1140 | ND |
| 2017-08-08 | 2706-012-0915 | ND |
| 2017-09-12 | 2706-007-0912 | ND |
| 2017-10-10 | 2706-012-1105 | ND |
| 2018-01-09 | 2706-012-0920 | ND |
| 2018-04-10 | 2706-012-0800 | ND |
| 2018-07-10 | 2706-012-0800 | ND |
| 2018-07-10 | 2706-005-0830 | ND |
| 2018-10-09 | 2706-012-1105 | ND |
| 2019-01-08 | 2706-012-0815 | ND |
| 2019-04-09 | 2706-042-0815 | ND |
| 2019-04-09 | 2706-012-1125 | ND |
| 2019-06-11 | 2706-041-0800 | ND |
| 2019-07-09 | 2706-012-0845 | ND |
| 2019-10-08 | 2706-012-0900 | ND |