Asbestos
Golden State Water Company (GSWC) - Claremont
NOTE: Golden State Water Company (GSWC) - Claremont purchases water from Three Valleys Municipal Water District which is required to test for asbestos. Sample information shown below was taken by Three Valleys Municipal Water District.
Asbestos is a mineral fiber introduced into water by the dissolution of asbestos-containing minerals and from decay of asbestos cement in water mains. Asbestos causes cancer when ingested or inhaled.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 6 | 0 | ND |
MFL = million fibers per liter
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 7 MFL
The legal limit for asbestos, established in 1991, was based on toxicity studies in laboratory animals conducted in the 1980s.
MFL = million fibers per liter
All test results
NOTE: Golden State Water Company (GSWC) - Claremont purchases water from Three Valleys Municipal Water District which is required to test for asbestos. Sample information shown below was taken by Three Valleys Municipal Water District.
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-20 | CA1910041_001_001-201803200920 | ND |
| 2019-03-19 | CA1910041_002_002-201903190950 | ND |
| 2020-03-17 | CA1910041_001_001-202003170815 | ND |
| 2020-03-17 | CA1910041_002_002-202003170750 | ND |
| 2020-07-09 | CA1910041_007_007-202007090800 | ND |
| 2020-12-08 | CA1910041_009_009-202012080356 | ND |
| 2021-03-16 | CA1910041_001_001-202103160830 | ND |
| 2021-03-16 | CA1910041_002_002-202103160810 | ND |
| 2022-03-15 | CA1910041_001_001-202203150900 | ND |
| 2022-03-15 | CA1910041_002_002-202203150850 | ND |
| 2023-02-02 | CA1910041_009_009-202302021000 | ND |
| 2023-03-15 | CA1910041_005_005-202303150910 | ND |
| 2023-03-15 | CA1910041_002_002-202303150815 | ND |
| 2023-03-15 | CA1910041_001_001-202303150800 | ND |
| 2023-04-18 | CA1910041_004_004-202304180900 | ND |
| 2023-04-18 | CA1910041_007_007-202304180830 | ND |