Alpha-hexachlorocyclohexane
Bonney Lake Water Department
NOTE: Bonney Lake Water Department purchases water from City of Tacoma which is required to test for alpha-hexachlorocyclohexane. Sample information shown below was taken by City of Tacoma.
Alpha-HCH is a byproduct of the production of the insecticide lindane, which is no longer used in the U.S. The International Agency for Research on Cancer has classified all forms of this chemical as possibly carcinogenic to humans.
10
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 |
|---|---|---|---|---|
| 2018 | ND | 12 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
NOTE: Bonney Lake Water Department purchases water from City of Tacoma which is required to test for alpha-hexachlorocyclohexane. Sample information shown below was taken by City of Tacoma.
| Date | Lab ID | Result |
|---|---|---|
| 2019-06-17 | 201906180320 | ND |
| 2019-06-18 | 201906200113 | ND |
| 2019-07-08 | 201907090493 | ND |
| 2019-10-14 | 201910150295 | ND |
| 2019-11-18 | 201911190327 | ND |
| 2019-11-19 | 201911200332 | ND |
| 2020-01-06 | 202001070137 | ND |
| 2020-04-06 | 202004070215 | ND |
| 2020-07-07 | 202007080257 | ND |
| 2020-12-07 | 202012080075 | ND |