Know Your Environment. Protect Your Health.

Dalapon

Houma Water Treatment Service Area

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

 
YearAverage resultSamples takenDetectionsRange of results
20180.950 ppb42ND - 1.90 ppb
2019ND40ND
2020ND20ND
20210.390 ppb220.380 ppb - 0.400 ppb
20220.600 ppb220.530 ppb - 0.670 ppb
2023ND20ND

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
2018-02-2635377894002ND
2018-02-2635377894002ND
2018-08-23354131920011.90 ppb
2018-08-23354131920011.90 ppb
2019-02-1835449356001ND
2019-02-1835449356001ND
2019-08-2835494058001ND
2019-08-2835494058001ND
2020-01-2235526020001ND
2020-12-0335596462001ND
2021-03-11356192880010.380 ppb
2021-11-04356757770010.400 ppb
2022-03-02357014330010.530 ppb
2022-10-12357531320010.670 ppb
2023-04-1135791937002ND
2023-12-1435848535001ND