Butylated hydroxyanisole
California Water Service (CWS) - Los Altos Suburban
NOTE: California Water Service (CWS) - Los Altos Suburban purchases water from Santa Clara Valley Water District which is required to test for butylated hydroxyanisole . Sample information shown below was taken by Santa Clara Valley Water District.
Butylated hydroxyanisole, or BHA, is used as a food preservative. The chemical is considered a possible human carcinogen and classified by the European Union as an endocrine disruptor.
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 | 16 | 0 | ND |
| 2019 | ND | 18 | 0 | ND |
| 2020 | ND | 2 | 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: California Water Service (CWS) - Los Altos Suburban purchases water from Santa Clara Valley Water District which is required to test for butylated hydroxyanisole . Sample information shown below was taken by Santa Clara Valley Water District.
| Date | Lab ID | Result |
|---|