Dalapon
Mansfield Water System
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 | 1.15 ppb | 4 | 2 | ND - 2.30 ppb |
| 2019 | 2.10 ppb | 4 | 4 | 1.90 ppb - 2.30 ppb |
| 2020 | ND | 2 | 0 | ND |
| 2021 | 0.320 ppb | 2 | 1 | ND - 0.640 ppb |
| 2022 | 0.305 ppb | 2 | 1 | ND - 0.610 ppb |
| 2023 | 0.550 ppb | 2 | 1 | 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 |
|---|---|---|
| 2018-04-19 | 35387645001 | ND |
| 2018-04-19 | 35387645001 | ND |
| 2018-08-06 | 35409597001 | 2.30 ppb |
| 2018-08-06 | 35409597001 | 2.30 ppb |
| 2019-03-13 | 35454725001 | 1.90 ppb |
| 2019-03-13 | 35454725001 | 1.90 ppb |
| 2019-08-01 | 35486698001 | 2.30 ppb |
| 2019-08-01 | 35486698001 | 2.30 ppb |
| 2020-02-03 | 35528231001 | ND |
| 2020-09-22 | 35579680001 | ND |
| 2021-03-03 | 35616824004 | ND |
| 2021-08-17 | 35657244001 | 0.640 ppb |
| 2022-02-22 | 35699238003 | ND |
| 2022-08-22 | 35742155002 | 0.610 ppb |
| 2023-02-07 | 35778295005 | ND |
| 2023-08-21 | 35823285001 | 1.10 ppb |