Dalapon
Pendleton Water Association
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
16
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 | 2.40 ppb | 4 | 4 | 1.70 ppb - 3.10 ppb |
| 2019 | 4.00 ppb | 4 | 4 | 1.90 ppb - 6.10 ppb |
| 2020 | 0.850 ppb | 2 | 1 | ND - 1.70 ppb |
| 2021 | 0.900 ppb | 2 | 1 | ND - 1.80 ppb |
| 2022 | 1.55 ppb | 2 | 2 | 1.50 ppb - 1.60 ppb |
| 2023 | 1.17 ppb | 2 | 2 | 0.830 ppb - 1.50 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 200 ppb
The legal limit for dalapon, established in 1992, was based on a toxicity study in laboratory animals published in 1960.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-02-20 | 35375979001 | 1.70 ppb |
| 2018-02-20 | 35375979001 | 1.70 ppb |
| 2018-08-06 | 35409599001 | 3.10 ppb |
| 2018-08-06 | 35409599001 | 3.10 ppb |
| 2019-03-12 | 35454721001 | 1.90 ppb |
| 2019-03-12 | 35454721001 | 1.90 ppb |
| 2019-08-07 | 35488972001 | 6.10 ppb |
| 2019-08-07 | 35488972001 | 6.10 ppb |
| 2020-02-10 | 35529911001 | ND |
| 2020-09-22 | 35579669001 | 1.70 ppb |
| 2021-01-20 | 35606276002 | ND |
| 2021-08-18 | 35657244005 | 1.80 ppb |
| 2022-02-21 | 35699244001 | 1.50 ppb |
| 2022-08-29 | 35743858002 | 1.60 ppb |
| 2023-02-27 | 35782747002 | 0.830 ppb |
| 2023-08-07 | 35819671001 | 1.50 ppb |