Dalapon
Port Sulphur Water District
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
28
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 | 0.900 ppb | 4 | 2 | ND - 1.80 ppb |
| 2019 | 2.02 ppb | 10 | 4 | ND - 6.10 ppb |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | 0.765 ppb | 4 | 3 | ND - 1.10 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 |
|---|---|---|
| 2018-01-30 | 35371297001 | 1.80 ppb |
| 2018-01-30 | 35371297001 | 1.80 ppb |
| 2018-10-02 | 35421762001 | ND |
| 2018-10-02 | 35421762001 | ND |
| 2019-02-05 | 35446733001 | ND |
| 2019-02-05 | 35446733001 | ND |
| 2019-05-30 | 35472024001 | ND |
| 2019-05-30 | 35472024001 | ND |
| 2019-08-14 | 35490419001 | 4.00 ppb |
| 2019-08-14 | 35490419001 | 4.00 ppb |
| 2019-10-08 | 35503647001 | ND |
| 2019-10-08 | 35503647001 | ND |
| 2019-11-07 | 35510832001 | 6.10 ppb |
| 2019-11-07 | 35510832001 | 6.10 ppb |
| 2020-03-10 | 35536681001 | ND |
| 2020-03-18 | 35538502001 | ND |
| 2020-10-26 | 35587643001 | ND |
| 2020-11-18 | 35593410001 | ND |
| 2021-03-01 | 35615732001 | ND |
| 2021-03-01 | 35615734001 | ND |
| 2021-09-13 | 35663084001 | ND |
| 2021-10-26 | 35673864001 | ND |
| 2022-01-13 | 35690764001 | ND |
| 2022-08-04 | 35737246001 | ND |
| 2023-02-01 | 35777177001 | ND |
| 2023-10-03 | 35831861001 | 1.10 ppb |
| 2023-10-05 | 35832714001 | 1.10 ppb |
| 2023-10-11 | 35834155001 | 0.860 ppb |