trans-1,2-Dichloroethylene
City of Keizer
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 | 28 | 0 | ND |
| 2015 | ND | 12 | 0 | ND |
| 2016 | ND | 11 | 0 | ND |
| 2017 | ND | 18 | 0 | ND |
| 2018 | ND | 18 | 0 | ND |
| 2019 | ND | 29 | 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 |
|---|---|---|
| 2014-01-15 | 401160702-V | ND |
| 2014-02-11 | 402121404-V | ND |
| 2014-03-06 | 403070208-V | ND |
| 2014-04-15 | 404162004-V | ND |
| 2014-04-15 | 404162002-V | ND |
| 2014-04-15 | 404162003-V | ND |
| 2014-05-22 | 405231101-V | ND |
| 2014-06-18 | 406192308-V | ND |
| 2014-07-16 | 407171404-V | ND |
| 2014-08-05 | 408063504-V | ND |
| 2014-09-18 | 409191301-V | ND |
| 2014-10-22 | 410231201-V | ND |
| 2014-11-04 | 411053207-V | ND |
| 2014-11-04 | 411053209-V | ND |
| 2014-11-04 | 411053201-V | ND |
| 2014-11-04 | 411053213-V | ND |
| 2014-11-04 | 411053208-V | ND |
| 2014-11-04 | 411053204-V | ND |
| 2014-11-04 | 411053214-V | ND |
| 2014-11-04 | 411053203-V | ND |
| 2014-11-04 | 411053202-V | ND |
| 2014-11-04 | 411053205-V | ND |
| 2014-11-04 | 411053211-V | ND |
| 2014-11-04 | 411053210-V | ND |
| 2014-11-04 | 411053212-V | ND |
| 2014-11-04 | 411053215-V | ND |
| 2014-11-04 | 411053206-V | ND |
| 2014-12-16 | 412171804-V | ND |
| 2015-01-15 | 501160902-V | ND |
| 2015-02-23 | 502240801-V | ND |
| 2015-03-11 | 503120901-V | ND |
| 2015-04-14 | 504151801-V | ND |
| 2015-05-20 | 505210908-V | ND |
| 2015-06-09 | 506103105-V | ND |
| 2015-07-07 | 507082604-V | ND |
| 2015-08-13 | 508140609-V | ND |
| 2015-09-03 | 509040604-V | ND |
| 2015-10-08 | 510090805-V | ND |
| 2015-11-18 | 511191608-V | ND |
| 2015-12-15 | 512131105-V | ND |
| 2016-01-12 | 601130909-V | ND |
| 2016-02-10 | 602111309-V | ND |
| 2016-03-10 | 603110404-V | ND |
| 2016-05-25 | 605252206-V | ND |
| 2016-06-07 | 606081304-V | ND |
| 2016-07-12 | 607131804-V | ND |
| 2016-08-04 | 608050709-V | ND |
| 2016-09-01 | 609020305-V | ND |
| 2016-10-11 | 610120804-V | ND |
| 2016-11-08 | 611093109-V | ND |
| 2016-12-13 | 612141704-V | ND |
| 2017-01-10 | 701110604-V | ND |
| 2017-02-16 | 702170208-V | ND |
| 2017-03-14 | 703151304-V | ND |
| 2017-04-05 | 704060802-V | ND |
| 2017-05-17 | 705181003-V | ND |
| 2017-06-20 | 706212709-V | ND |
| 2017-06-20 | 706212710-V | ND |
| 2017-07-20 | 707211103-V | ND |
| 2017-07-20 | 707211106-V | ND |
| 2017-08-10 | 708111305-V | ND |
| 2017-08-10 | 708111306-V | ND |
| 2017-09-21 | 709220811-V | ND |
| 2017-09-21 | 709220812-V | ND |
| 2017-10-17 | 710182608-V | ND |
| 2017-10-17 | 710182607-V | ND |
| 2017-11-07 | 711081508-V | ND |
| 2017-12-21 | 712220711-V | ND |
| 2017-12-21 | 712220712-V | ND |
| 2018-01-23 | 801242005-V | ND |
| 2018-01-23 | 801242006-V | ND |
| 2018-02-15 | 802160708-V | ND |
| 2018-03-15 | 803160509-V | ND |
| 2018-04-19 | 804200601-V | ND |
| 2018-04-19 | 804200602-V | ND |
| 2018-05-22 | 805231707-V | ND |
| 2018-05-22 | 805231708-V | ND |
| 2018-06-21 | 806221311-V | ND |
| 2018-06-21 | 806221312-V | ND |
| 2018-08-07 | 808083105-V | ND |
| 2018-08-07 | 808083106-V | ND |
| 2018-09-13 | 809140412-V | ND |
| 2018-09-13 | 809140411-V | ND |
| 2018-10-10 | 810110908-V | ND |
| 2018-10-10 | 810110907-V | ND |
| 2018-11-08 | 811090405-V | ND |
| 2018-12-27 | 812280211-V | ND |
| 2019-01-10 | 901110906-V | ND |
| 2019-02-21 | 902221005-V | ND |
| 2019-03-14 | 903150712-V | ND |
| 2019-03-14 | 903150709-V | ND |
| 2019-04-18 | 904190607-V | ND |
| 2019-04-18 | 904190608-V | ND |
| 2019-05-16 | 905171907-V | ND |
| 2019-05-16 | 905171908-V | ND |
| 2019-06-11 | 906112011-V | ND |
| 2019-06-11 | 906112004-V | ND |
| 2019-06-11 | 906112012-V | ND |
| 2019-06-11 | 906112001-V | ND |
| 2019-06-11 | 906112013-V | ND |
| 2019-06-11 | 906112002-V | ND |
| 2019-06-11 | 906112014-V | ND |
| 2019-06-11 | 906112003-V | ND |
| 2019-06-11 | 906112010-V | ND |
| 2019-06-11 | 906112008-V | ND |
| 2019-06-11 | 906112009-V | ND |
| 2019-06-11 | 906112015-V | ND |
| 2019-06-11 | 906112005-V | ND |
| 2019-06-13 | 906142007-V | ND |
| 2019-06-13 | 906142010-V | ND |
| 2019-07-18 | 907191107-V | ND |
| 2019-07-18 | 907191108-V | ND |
| 2019-08-21 | 908223308-V | ND |
| 2019-09-12 | 909131412-V | ND |
| 2019-10-10 | 910110406-V | ND |
| 2019-12-18 | 912190712-V | ND |