1,1-Dichloroethane
Bonney Lake Water Department
NOTE: Bonney Lake Water Department purchases water from City of Tacoma which is required to test for 1,1-dichloroethane. Sample information shown below was taken by City of Tacoma.
1,1-Dichloroethane is used in industrial chemical synthesis; in plastics, paint, varnish and finish removers; and as a pesticide. It can cause cancer.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | ND | 6 | 0 | ND |
| 2014 | ND | 6 | 0 | ND |
| 2015 | ND | 20 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 3 ppb
The EWG Health Guideline of 3 ppb for 1,1-dichloroethane 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 cancer.
ppb = parts per billion
All test results
NOTE: Bonney Lake Water Department purchases water from City of Tacoma which is required to test for 1,1-dichloroethane. Sample information shown below was taken by City of Tacoma.
| Date | Lab ID | Result |
|---|---|---|
| 2014-08-06 | 201408070493AM | ND |
| 2015-03-10 | 201503110935AM | ND |
| 2015-03-10 | 201503120179AM | ND |
| 2015-03-10 | 201502170548AM | ND |
| 2015-06-09 | 201505060001AM | ND |
| 2015-06-17 | 201505060005AM | ND |
| 2015-06-29 | 201505020034AM | ND |
| 2015-07-06 | 201505020035AM | ND |
| 2015-07-08 | 201507090318AM | ND |
| 2015-07-09 | 201507100395AM | ND |
| 2015-07-09 | 201506300092AM | ND |
| 2015-08-24 | 201508250628AM | ND |
| 2015-09-09 | 201508050013AM | ND |
| 2015-09-09 | 201508050009AM | ND |
| 2015-10-13 | 201509250020AM | ND |
| 2015-12-01 | 201511130086AM | ND |
| 2015-12-02 | 201511130082AM | ND |
| 2015-12-07 | 201511130099AM | ND |
| 2015-12-07 | 201511130096AM | ND |
| 2015-12-08 | 201511130097AM | ND |
| 2015-12-08 | 201511130098AM | ND |
| 2018-02-07 | ND | |
| 2018-03-12 | ND | |
| 2018-03-19 | ND | |
| 2019-01-02 | ND | |
| 2019-07-24 | ND | |
| 2019-12-03 | ND | |
| 2021-06-21 | 4137307 | ND |
| 2021-06-21 | 4137308 | ND |
| 2021-06-21 | 4137309 | ND |
| 2021-06-21 | 4233773 | ND |
| 2021-06-30 | 4142811 | ND |
| 2022-09-15 | 4368469 | ND |
| 2022-09-23 | 4368470 | ND |
| 2022-10-11 | 4363364 | ND |
| 2022-11-15 | 4428454 | ND |
| 2022-11-16 | 4388597 | ND |
| 2023-06-20 | 4542958 | ND |
| 2023-07-12 | 4542960 | ND |
| 2023-07-12 | 4542959 | ND |