trans-1,2-Dichloroethylene
Nipomo Comm. Services District
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 | 8 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 4 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
2019 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2014-07-23 | 5867-002-1000 | ND |
2014-07-23 | 5867-004-1015 | ND |
2014-07-23 | 5867-008-1200 | ND |
2014-07-23 | 5867-015-1120 | ND |
2014-07-23 | 5867-020-1235 | ND |
2014-07-23 | 5867-021-1210 | ND |
2014-07-23 | 5867-033-1045 | ND |
2014-12-23 | 5867-005-1245 | ND |
2017-07-11 | 5867-015-1215 | ND |
2017-07-11 | 5867-020-1145 | ND |
2017-07-11 | 5867-021-1120 | ND |
2017-07-11 | 5867-033-1100 | ND |