Know Your Environment. Protect Your Health.

Dalapon

Leon Water Supply

The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.800 ppb110.800 ppb
20190.600 ppb110.600 ppb
20201.10 ppb111.10 ppb
20211.30 ppb111.30 ppb
20224.50 ppb222.50 ppb - 6.50 ppb
20231.30 ppb111.30 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
2018-04-02OE6403100.800 ppb
2019-06-04OE8164720.600 ppb
2020-05-04OE9948751.10 ppb
2021-04-19OE16668371.30 ppb
2022-05-02OE20918366.50 ppb
2022-06-21OE21220582.50 ppb
2023-04-17OE22684771.30 ppb