trans-1,2-Dichloroethylene
South Montebello Irrigation 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.
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 | 4 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 4 | 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 |
---|---|---|
2014-05-23 | 2706-005-0930 | ND |
2014-08-22 | 2706-009-0925 | ND |
2014-08-22 | 2706-003-0910 | ND |
2014-12-22 | 2706-007-0845 | ND |
2015-05-26 | 2706-005-0940 | ND |
2015-09-24 | 2706-003-1010 | ND |
2015-09-24 | 2706-009-1037 | ND |
2015-11-24 | 2706-007-1023 | ND |
2016-05-25 | 9588-005-0925 | ND |
2016-08-25 | 9588-003-1000 | ND |
2016-08-25 | 9588-009-1020 | ND |
2016-11-22 | 9588-007-1030 | ND |
2017-05-25 | 9588-005-1030 | ND |
2017-08-30 | 9588-007-1035 | ND |
2017-08-30 | 9588-009-1155 | ND |
2017-08-30 | 9588-003-1050 | ND |
2018-05-29 | 9588-005-1040 | ND |
2018-08-15 | 9588-007-1115 | ND |
2018-08-15 | 9588-009-1025 | ND |
2018-08-15 | 9588-003-1100 | ND |
2019-05-02 | 9588-005-0915 | ND |
2019-08-05 | 9588-007-1050 | ND |
2019-08-05 | 9588-003-1025 | ND |
2019-08-15 | 9588-009-1140 | ND |