cis-1,2-Dichloroethylene
Jackson
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.
38
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 2.76 ppb | 19 | 19 | 0.500 ppb - 7.90 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | 0.1000 ppb | 1 | 1 | 0.1000 ppb |
| 2018 | 2.60 ppb | 9 | 8 | ND - 5.50 ppb |
| 2019 | 1.98 ppb | 9 | 7 | ND - 4.50 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for cis-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 |
|---|---|---|
| 2014-02-19 | LLF09828 | 0.700 ppb |
| 2014-02-19 | LLF09829 | 0.700 ppb |
| 2014-03-11 | LLF11546 | 2.20 ppb |
| 2014-03-11 | LLF11545 | 6.90 ppb |
| 2014-05-07 | LLF17268 | 1.20 ppb |
| 2014-05-07 | LLF17269 | 1.10 ppb |
| 2014-06-11 | LLF22276 | 7.90 ppb |
| 2014-06-11 | LLF22272 | 2.30 ppb |
| 2014-06-11 | LLF22273 | 1.80 ppb |
| 2014-06-11 | LLF22274 | 2.00 ppb |
| 2014-06-11 | LLF22275 | 1.90 ppb |
| 2014-08-06 | LLF31297 | 1.50 ppb |
| 2014-09-03 | LLF36182 | 6.20 ppb |
| 2014-11-05 | LLF45548 | 0.500 ppb |
| 2014-12-10 | LLF49193 | 1.70 ppb |
| 2014-12-10 | LLF49191 | 1.90 ppb |
| 2014-12-10 | LLF49194 | 2.70 ppb |
| 2014-12-10 | LLF49192 | 2.50 ppb |
| 2014-12-10 | LLF49195 | 6.70 ppb |
| 2017-11-20 | 0.1000 ppb* | |
| 2018-02-14 | LLH65745 | 1.10 ppb |
| 2018-03-14 | LLH70809 | 5.50 ppb |
| 2018-05-16 | LLH80988 | 0.600 ppb |
| 2018-06-05 | LLH84095 | 5.00 ppb |
| 2018-08-09 | LLH98034 | 1.40 ppb |
| 2018-08-29 | LLI02295 | 4.30 ppb |
| 2018-08-29 | LLI02294 | ND |
| 2018-11-15 | LLI15687 | 0.900 ppb |
| 2018-12-18 | LLI19867 | 4.60 ppb |
| 2019-02-12 | LLI25365 | 0.600 ppb |
| 2019-03-12 | LLI29006 | 3.40 ppb |
| 2019-05-14 | LLI37906 | 0.700 ppb |
| 2019-06-25 | LLI45876 | 4.50 ppb |
| 2019-08-14 | LLI56290 | 0.900 ppb |
| 2019-09-04 | LLI61301 | 4.50 ppb |
| 2019-10-25 | LLI72733 | ND |
| 2019-11-20 | LLI78205 | ND |
| 2019-12-10 | LLI82551 | 3.20 ppb |
* Sample result is taken from the system's CCR report.