Trifluralin
City of Puyallup
NOTE: City of Puyallup purchases water from City of Tacoma which is required to test for trifluralin. Sample information shown below was taken by City of Tacoma.
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 | 8 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 6 | 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: City of Puyallup purchases water from City of Tacoma which is required to test for trifluralin. Sample information shown below was taken by City of Tacoma.
| Date | Lab ID | Result |
|---|---|---|
| 2021-06-21 | 4149654 | ND |
| 2021-06-21 | 4149653 | ND |
| 2021-06-30 | 4143018 | ND |
| 2021-06-30 | 4143019 | ND |
| 2021-07-01 | 4149655 | ND |
| 2021-07-21 | 4159386 | ND |
| 2021-07-21 | 4159385 | ND |
| 2021-07-22 | 4159384 | ND |
| 2022-02-01 | 4259184 | ND |
| 2022-09-15 | 4370819 | ND |
| 2022-11-15 | 4383777 | ND |