trans-1,2-Dichloroethylene
Redhill Water
NOTE: Redhill Water purchases water from Alma Waterworks which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Alma Waterworks.
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 | 8 | 0 | ND |
2015 | ND | 5 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | ND | 1 | 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
NOTE: Redhill Water purchases water from Alma Waterworks which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Alma Waterworks.
Date | Lab ID | Result |
---|---|---|
2014-03-12 | 14072007001 | ND |
2015-01-20 | 15022002209 | ND |
2016-01-05 | 16008005401 | ND |
2017-01-16 | 17019000501 | ND |
2018-01-01 | 18004012709 | ND |
2019-02-05 | 19038001501 | ND |