trans-1,2-Dichloroethylene
Camino Real Regional Utility Authority
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 | 5 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2014-02-18 | 1402866-001A | ND |
2014-02-18 | 1402871-001A | ND |
2014-02-18 | 1402874-001A | ND |
2014-02-18 | 1402869-001A | ND |
2014-05-21 | 1405A43-001A | ND |
2015-12-17 | 1512A66-001A | ND |
2016-02-18 | 1602894-001A | ND |
2017-02-08 | 1702464-001 | ND |
2017-02-08 | 1702462-001 | ND |
2017-02-08 | 1702467-001 | ND |
2017-03-01 | 1703086-001 | ND |
2017-04-19 | 1704A06-001 | ND |
2018-01-30 | 1802153-001 | ND |
2019-11-19 | 1911973-001 | ND |
2019-11-19 | 1911976-001 | ND |