trans-1,2-Dichloroethylene
City of Los Banos
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 | 11 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 12 | 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 |
---|---|---|
2014-07-02 | 5810-014-1119 | ND |
2014-07-02 | 5810-012-1002 | ND |
2014-07-02 | 5810-011-1020 | ND |
2014-07-02 | 5810-010-1254 | ND |
2014-07-02 | 5810-009-1137 | ND |
2014-07-02 | 5810-007-1233 | ND |
2014-07-02 | 5810-006-1058 | ND |
2014-07-02 | 5810-005-1210 | ND |
2014-07-02 | 5810-003-0927 | ND |
2014-07-02 | 5810-002-0910 | ND |
2014-07-02 | 5810-001-0857 | ND |
2017-07-12 | 5810-014-1139 | ND |
2017-07-12 | 5810-001-0853 | ND |
2017-07-12 | 5810-013-0811 | ND |
2017-07-12 | 5810-012-0953 | ND |
2017-07-12 | 5810-011-1027 | ND |
2017-07-12 | 5810-010-1305 | ND |
2017-07-12 | 5810-009-1203 | ND |
2017-07-12 | 5810-005-1225 | ND |
2017-07-12 | 5810-003-0923 | ND |
2017-07-12 | 5810-002-0908 | ND |
2017-07-26 | 5810-007-1137 | ND |
2017-07-26 | 5810-006-1112 | ND |