trans-1,2-Dichloroethylene
International Alert Academy
NOTE: International Alert Academy purchases water from Pritchett Water Supply Corporation which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Pritchett Water Supply Corporation.
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 | 1 | 0 | ND |
| 2015 | ND | 13 | 0 | ND |
| 2016 | ND | 15 | 0 | ND |
| 2017 | ND | 13 | 0 | ND |
| 2018 | ND | 12 | 0 | ND |
| 2019 | ND | 12 | 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: International Alert Academy purchases water from Pritchett Water Supply Corporation which is required to test for trans-1,2-dichloroethylene. Sample information shown below was taken by Pritchett Water Supply Corporation.
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-22 | Q1402022003 | ND |
| 2014-01-22 | Q1402022001 | ND |
| 2014-06-25 | Q1423783017 | ND |
| 2014-06-25 | Q1423783015 | ND |
| 2014-06-25 | Q1423783012 | ND |
| 2015-03-12 | Q1509329005 | ND |
| 2015-06-23 | Q1523522024 | ND |
| 2015-06-23 | Q1523522022 | ND |
| 2015-06-23 | Q1523522026 | ND |
| 2015-06-23 | Q1523522028 | ND |
| 2015-06-23 | Q1523522030 | ND |
| 2015-06-23 | Q1523522032 | ND |
| 2015-06-23 | Q1523522035 | ND |
| 2015-06-23 | Q1523522012 | ND |
| 2015-06-23 | Q1523522013 | ND |
| 2015-06-23 | Q1523522016 | ND |
| 2015-06-23 | Q1523522018 | ND |
| 2015-06-23 | Q1523522034 | ND |
| 2016-02-25 | Q1608021004 | ND |
| 2016-02-25 | Q1608021002 | ND |
| 2016-02-25 | Q1608021005 | ND |
| 2016-02-25 | Q1608021008 | ND |
| 2016-02-25 | Q1608021010 | ND |
| 2016-02-25 | Q1608021012 | ND |
| 2016-05-25 | Q1620685009 | ND |
| 2016-05-25 | Q1620685006 | ND |
| 2016-05-25 | Q1620685011 | ND |
| 2016-10-24 | Q1645066020 | ND |
| 2016-10-24 | Q1645066018 | ND |
| 2016-10-24 | Q1645066011 | ND |
| 2016-10-24 | Q1645066015 | ND |
| 2016-10-24 | Q1645066010 | ND |
| 2016-10-24 | Q1645066014 | ND |
| 2017-03-02 | Q1709045011 | ND |
| 2017-08-29 | Q1739153076 | ND |
| 2017-08-29 | Q1739153013 | ND |
| 2017-08-29 | Q1739153065 | ND |
| 2017-08-29 | Q1739153061 | ND |
| 2017-08-29 | Q1739153067 | ND |
| 2017-08-29 | Q1739153064 | ND |
| 2017-08-29 | Q1739153069 | ND |
| 2017-08-29 | Q1739153072 | ND |
| 2017-08-29 | Q1739153010 | ND |
| 2017-08-29 | Q1739153074 | ND |
| 2017-08-30 | Q1739907001 | ND |
| 2017-08-30 | Q1739907010 | ND |
| 2018-06-05 | Q1822214014 | ND |
| 2018-06-05 | Q1822214002 | ND |
| 2018-06-05 | Q1822214004 | ND |
| 2018-06-05 | Q1822214005 | ND |
| 2018-06-05 | Q1822214008 | ND |
| 2018-06-05 | Q1822214010 | ND |
| 2018-06-05 | Q1822214012 | ND |
| 2018-06-05 | Q1822214016 | ND |
| 2018-06-05 | Q1822214017 | ND |
| 2018-06-05 | Q1822214019 | ND |
| 2018-06-05 | Q1822214021 | ND |
| 2018-06-05 | Q1822214023 | ND |
| 2019-10-15 | Q1972651016 | ND |
| 2019-10-15 | Q1972651026 | ND |
| 2019-10-15 | Q1972651018 | ND |
| 2019-10-15 | Q1972651028 | ND |
| 2019-10-15 | Q1972651001 | ND |
| 2019-10-15 | Q1972651030 | ND |
| 2019-10-15 | Q1972651020 | ND |
| 2019-10-15 | Q1972651032 | ND |
| 2019-10-15 | Q1972651034 | ND |
| 2019-10-15 | Q1972651003 | ND |
| 2019-10-15 | Q1972651036 | ND |
| 2019-10-15 | Q1972651005 | ND |