Know Your Environment. Protect Your Health.

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

 
YearAverage resultSamples takenDetectionsRange of results
20180.900 ppb42ND - 1.80 ppb
20192.02 ppb104ND - 6.10 ppb
2020ND40ND
2021ND40ND
2022ND20ND
20230.765 ppb43ND - 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
2018-01-30353712970011.80 ppb
2018-01-30353712970011.80 ppb
2018-10-0235421762001ND
2018-10-0235421762001ND
2019-02-0535446733001ND
2019-02-0535446733001ND
2019-05-3035472024001ND
2019-05-3035472024001ND
2019-08-14354904190014.00 ppb
2019-08-14354904190014.00 ppb
2019-10-0835503647001ND
2019-10-0835503647001ND
2019-11-07355108320016.10 ppb
2019-11-07355108320016.10 ppb
2020-03-1035536681001ND
2020-03-1835538502001ND
2020-10-2635587643001ND
2020-11-1835593410001ND
2021-03-0135615732001ND
2021-03-0135615734001ND
2021-09-1335663084001ND
2021-10-2635673864001ND
2022-01-1335690764001ND
2022-08-0435737246001ND
2023-02-0135777177001ND
2023-10-03358318610011.10 ppb
2023-10-05358327140011.10 ppb
2023-10-11358341550010.860 ppb