Trifluralin
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 trifluralin. Sample information shown below was taken by Santa Clara Valley Water District.
Trifluralin is a herbicide that is used on food crops and non-agricultural lands. It was banned in Europe in the late 2000s, primarily due to its ecological toxicity.
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 23 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 4 ppb
The EWG Health Guideline of 4 ppb for trifluralin was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
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 trifluralin. Sample information shown below was taken by Santa Clara Valley Water District.
| Date | Lab ID | Result |
|---|---|---|
| 2021-11-08 | CA4310027_025_025-202111081055 | ND |
| 2021-11-09 | CA4310027_007_007-202111090950 | ND |
| 2021-11-09 | CA4310027_023_023-202111091006 | ND |
| 2021-11-09 | CA4310027_001_001-202111091030 | ND |
| 2021-11-09 | CA4310027_005_005-202111091040 | ND |
| 2021-11-09 | CA4310027_011_011-202111090820 | ND |
| 2021-11-09 | CA4310027_022_022-202111091036 | ND |
| 2021-11-09 | CA4310027_024_024-202111091106 | ND |
| 2021-11-09 | CA4310027_006_006-202111091150 | ND |
| 2021-12-14 | CA4310027_009_009-202112140941 | ND |
| 2021-12-16 | CA4310027_004_004-202112161158 | ND |