Dalapon
St Bernard Parish Waterworks
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 | 0.600 ppb | 4 | 2 | ND - 1.20 ppb |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | 0.265 ppb | 2 | 1 | ND - 0.530 ppb |
| 2022 | 0.260 ppb | 2 | 1 | ND - 0.520 ppb |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-03-06 | 35378295001 | ND |
| 2018-03-06 | 35378295001 | ND |
| 2018-09-24 | 35419983001 | 1.20 ppb |
| 2018-09-24 | 35419983001 | 1.20 ppb |
| 2019-02-14 | 35448755001 | ND |
| 2019-02-14 | 35448755001 | ND |
| 2019-09-24 | 35500301001 | ND |
| 2019-09-24 | 35500301001 | ND |
| 2020-03-10 | 35536678001 | ND |
| 2020-11-18 | 35593411001 | ND |
| 2021-03-09 | 35617728001 | ND |
| 2021-10-26 | 35673877001 | 0.530 ppb |
| 2022-02-09 | 35696480001 | ND |
| 2022-10-20 | 35754897001 | 0.520 ppb |
| 2023-02-08 | 35778323001 | ND |
| 2023-10-11 | 35834151001 | ND |