Dalapon
Gretna 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 | ND | 4 | 0 | ND |
| 2019 | 2.55 ppb | 4 | 2 | ND - 5.10 ppb |
| 2020 | ND | 2 | 0 | ND |
| 2021 | 0.315 ppb | 2 | 1 | ND - 0.630 ppb |
| 2022 | 0.355 ppb | 2 | 1 | ND - 0.710 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 |
|---|---|---|
| 2018-01-30 | 35371297005 | ND |
| 2018-01-30 | 35371297005 | ND |
| 2018-10-02 | 35421766001 | ND |
| 2018-10-02 | 35421766001 | ND |
| 2019-02-05 | 35446730001 | ND |
| 2019-02-05 | 35446730001 | ND |
| 2019-08-14 | 35490413001 | 5.10 ppb |
| 2019-08-14 | 35490413001 | 5.10 ppb |
| 2020-03-18 | 35538511001 | ND |
| 2020-10-26 | 35587648001 | ND |
| 2021-03-01 | 35615731001 | ND |
| 2021-12-08 | 35683666002 | 0.630 ppb |
| 2022-01-13 | 35690761001 | ND |
| 2022-08-04 | 35737249001 | 0.710 ppb |
| 2023-02-01 | 35777180001 | ND |
| 2023-10-11 | 35834160001 | ND |