Dalapon
City of Opelousas Water System
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
22
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 | ND | 10 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 6 | 0 | ND |
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 |
|---|---|---|
| 2018-01-09 | 35367792002 | ND |
| 2018-01-09 | 35367792003 | ND |
| 2018-01-09 | 35367792004 | ND |
| 2018-01-09 | 35367792005 | ND |
| 2018-01-09 | 35367792001 | ND |
| 2018-01-09 | 35367792002 | ND |
| 2018-01-09 | 35367792003 | ND |
| 2018-01-09 | 35367792004 | ND |
| 2018-01-09 | 35367792005 | ND |
| 2018-01-09 | 35367792001 | ND |
| 2020-08-17 | 35571769002 | ND |
| 2020-08-17 | 35571769001 | ND |
| 2021-01-19 | 35606222002 | ND |
| 2021-01-19 | 35606222003 | ND |
| 2021-01-19 | 35606222004 | ND |
| 2021-01-19 | 35606222005 | ND |
| 2023-08-28 | 35823882001 | ND |
| 2023-08-28 | 35823882002 | ND |
| 2023-08-28 | 35823882003 | ND |
| 2023-08-28 | 35823882004 | ND |
| 2023-08-28 | 35823882005 | ND |
| 2023-08-28 | 35823882006 | ND |