1,1-Dichloroethylene
Golden State Water Company (GSWC) - Artesia
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
28
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 | 0.0738 ppb | 8 | 1 | ND - 0.590 ppb |
| 2015 | ND | 6 | 0 | ND |
| 2016 | 0.112 ppb | 5 | 1 | ND - 0.560 ppb |
| 2017 | 0.128 ppb | 6 | 1 | ND - 0.770 ppb |
| 2018 | 0.840 ppb | 2 | 2 | 0.790 ppb - 0.890 ppb |
| 2019 | 0.870 ppb | 1 | 1 | 0.870 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-04 | 2706-021-0950 | ND |
| 2014-02-04 | 2706-010-0855 | ND |
| 2014-02-05 | 2706-030-1125 | ND |
| 2014-02-05 | 2706-015-1130 | 0.590 ppb |
| 2014-02-05 | 2706-014-0850 | ND |
| 2014-03-24 | 2706-031-1225 | ND |
| 2014-05-06 | 2706-015-0800 | ND |
| 2014-08-11 | 2706-031-1535 | ND |
| 2015-02-02 | 2706-030-1205 | ND |
| 2015-02-03 | 2706-031-1205 | ND |
| 2015-02-04 | 2706-021-1012 | ND |
| 2015-02-04 | 2706-010-1158 | ND |
| 2015-02-05 | 2706-014-0815 | ND |
| 2015-05-05 | 2706-015-0925 | ND |
| 2016-02-02 | 2706-030-1257 | ND |
| 2016-02-02 | 2706-031-0900 | ND |
| 2016-02-03 | 2706-021-1038 | ND |
| 2016-02-03 | 4790-014-1144 | ND |
| 2016-05-04 | 2706-015-1310 | 0.560 ppb |
| 2017-02-08 | 9590-010-0835 | ND |
| 2017-02-08 | 9590-030-1024 | ND |
| 2017-02-08 | 9590-021-0927 | ND |
| 2017-02-15 | 9590-014-1010 | ND |
| 2017-03-21 | 9590-031-1022 | ND |
| 2017-05-09 | 9590-015-1245 | 0.770 ppb |
| 2018-02-05 | 9590-015-0938 | 0.790 ppb |
| 2018-05-01 | 9590-015-1240 | 0.890 ppb |
| 2019-05-08 | 9590-015-1025 | 0.870 ppb |