Know Your Environment. Protect Your Health.

Dalapon

St Charles Water District 1 East Bank

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

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.70 ppb42ND - 3.40 ppb
20191.55 ppb84ND - 3.20 ppb
2020ND40ND
20210.193 ppb42ND - 0.440 ppb
2022ND50ND
2023ND40ND

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
2018-01-2335370117001ND
2018-01-2335370117001ND
2018-07-17354055000013.40 ppb
2018-07-17354055000013.40 ppb
2019-01-2235444037001ND
2019-01-2235444038001ND
2019-01-2235444037001ND
2019-01-2235444038001ND
2019-07-25354852290023.00 ppb
2019-07-25354852290013.20 ppb
2019-07-25354852290023.00 ppb
2019-07-25354852290013.20 ppb
2020-03-0535535509001ND
2020-03-0535535509002ND
2020-11-1035591297001ND
2020-11-1035591292001ND
2021-01-2835608065001ND
2021-01-2835608065002ND
2021-10-25356737660010.440 ppb
2021-10-25356737660020.330 ppb
2022-02-0235694868001ND
2022-02-0235694870001ND
2022-08-2435742576001ND
2022-08-2435742579001ND
2022-08-2435742769001ND
2023-03-2035787602001ND
2023-03-2035787604001ND
2023-11-2835844322001ND
2023-11-2835844330001ND