cis-1,2-Dichloroethylene
Golden State Water Company (GSWC) - Florence/Graham
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.
53
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 |
|---|---|---|---|---|
| 2014 | ND | 12 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 8 | 0 | ND |
| 2017 | ND | 12 | 0 | ND |
| 2018 | 0.1000 ppb | 10 | 1 | ND - 1.000 ppb |
| 2019 | 0.198 ppb | 6 | 2 | ND - 0.670 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 |
|---|---|---|
| 2014-02-06 | 2706-010-1048 | ND |
| 2014-02-19 | 2706-027-1027 | ND |
| 2014-02-25 | 2706-027-1150 | ND |
| 2014-03-03 | 2706-027-1015 | ND |
| 2014-03-11 | 2706-027-1140 | ND |
| 2014-03-18 | 2706-027-1033 | ND |
| 2014-03-25 | 2706-027-1113 | ND |
| 2014-04-01 | 2706-027-1009 | ND |
| 2014-04-07 | 2706-027-1111 | ND |
| 2014-05-20 | 2706-027-1151 | ND |
| 2014-08-05 | 2706-027-0933 | ND |
| 2014-11-04 | 2706-027-1104 | ND |
| 2015-02-05 | 2706-010-1148 | ND |
| 2015-02-05 | 2706-027-1153 | ND |
| 2015-05-07 | 2706-027-0920 | ND |
| 2015-08-04 | 2706-027-1207 | ND |
| 2015-11-03 | 2706-027-0955 | ND |
| 2016-02-02 | 2706-027-1045 | ND |
| 2016-02-04 | 4790-010-1030 | ND |
| 2016-05-04 | 2706-036-0900 | ND |
| 2016-05-04 | 2706-027-0948 | ND |
| 2016-05-04 | 2706-033-1105 | ND |
| 2016-05-04 | 2706-034-1110 | ND |
| 2016-08-02 | 2706-027-1113 | ND |
| 2016-11-09 | 2706-027-1000 | ND |
| 2017-01-04 | 9590-033-1026 | ND |
| 2017-01-10 | 9590-033-1110 | ND |
| 2017-01-18 | 9590-027-0925 | ND |
| 2017-01-18 | 9590-033-1224 | ND |
| 2017-02-08 | 9590-010-1303 | ND |
| 2017-02-08 | 9590-027-1250 | ND |
| 2017-03-06 | 9590-033-0927 | ND |
| 2017-03-07 | 9590-036-1056 | ND |
| 2017-03-07 | 9590-027-1205 | ND |
| 2017-05-03 | 9590-027-1118 | ND |
| 2017-08-01 | 9590-027-1023 | ND |
| 2017-11-08 | 9590-027-1024 | ND |
| 2018-01-03 | 9590-036-1202 | ND |
| 2018-02-06 | 9590-027-0841 | ND |
| 2018-02-12 | 9590-010-0858 | ND |
| 2018-03-06 | 9590-034-1114 | 1.000 ppb |
| 2018-03-06 | 9590-033-1111 | ND |
| 2018-03-06 | 9590-036-1259 | ND |
| 2018-03-07 | 9590-027-1128 | ND |
| 2018-05-02 | 9590-027-1100 | ND |
| 2018-08-07 | 9590-027-1305 | ND |
| 2018-11-06 | 9590-027-1156 | ND |
| 2019-02-13 | 9590-034-1018 | 0.520 ppb |
| 2019-02-13 | 9590-033-1018 | 0.670 ppb |
| 2019-02-13 | 9590-027-1038 | ND |
| 2019-02-13 | 9590-010-1040 | ND |
| 2019-08-07 | 9590-027-1034 | ND |
| 2019-11-04 | 9590-027-1008 | ND |