Know Your Environment. Protect Your Health.

Dinoseb

Harris County Fresh Water Supply District 1a

NOTE: Harris County Fresh Water Supply District 1a purchases water from Baytown Area Water Authority which is required to test for dinoseb. Sample information shown below was taken by Baytown Area Water Authority.

Dinoseb is a herbicide that causes birth defects and reproductive difficulties. It has been banned in the U.S. since 1986.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020N/A00N/A
2021ND10ND
2022ND40ND
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 7 ppb

The legal limit for dinoseb, established in 1992, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s.

ppb = parts per billion

All test results

NOTE: Harris County Fresh Water Supply District 1a purchases water from Baytown Area Water Authority which is required to test for dinoseb. Sample information shown below was taken by Baytown Area Water Authority.

Date Lab ID Result
2019-01-14AE49657ND
2021-10-20AF74225ND
2022-01-12AF80028ND
2022-01-12AF80038ND
2022-04-04AF91887ND
2022-07-05AG03290ND