trans-1,2-Dichloroethylene
City of Show Low
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 |
---|---|---|---|---|
2014 | ND | 3 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | ND | 3 | 0 | ND |
2017 | ND | 8 | 0 | ND |
2018 | ND | 12 | 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 |
---|---|---|
2014-03-18 | 4031453-02 | ND |
2014-05-29 | 4052451-01V | ND |
2014-09-29 | 4092482-01V | ND |
2016-07-06 | 6070427-02 | ND |
2016-07-06 | 6070427-01 | ND |
2016-09-20 | 6091873-01 | ND |
2017-02-14 | 7021416-02 | ND |
2017-02-14 | 7021416-01V | ND |
2017-05-09 | 7051152-01VOC | ND |
2017-05-09 | 7051151-01VOC | ND |
2017-08-22 | 7082406-05 | ND |
2017-08-22 | 7082406-03VOC | ND |
2017-08-22 | 7082406-01VOC | ND |
2017-11-07 | 7110938-11 | ND |
2018-01-23 | 18A2482-02 | ND |
2018-01-23 | 18A2483-01 | ND |
2018-01-23 | 18A2482-01 | ND |
2018-01-23 | 18A2476-01VOC | ND |
2018-04-03 | 18D0522-01 VOC | ND |
2018-09-18 | 18I1881-01 VOC | ND |
2018-10-30 | 18J3236-01 VOC | ND |
2018-11-30 | 18L0575-01 | ND |
2018-11-30 | 18L0549-07 VOC | ND |
2018-12-03 | 18L0549-05 VOC | ND |
2018-12-03 | 18L0549-03 VOC | ND |
2018-12-03 | 18L0549-01 VOC | ND |
2019-03-05 | 19C0544-01 | ND |
2019-05-28 | 19E3013-03 | ND |
2019-07-16 | 19G2196-01 | ND |
2019-07-16 | 19G2196-04 | ND |
2019-07-16 | 19G2196-03 | ND |
2019-07-16 | 19G2196-02 | ND |