Know Your Environment. Protect Your Health.

Dalapon

Northwest Harris County Municipal Utility District 6

NOTE: Northwest Harris County Municipal Utility District 6 purchases water from North Harris County Regional Water Authority which is required to test for dalapon. Sample information shown below was taken by North Harris County Regional Water Authority.

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

 

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
2020ND20ND
2021ND10ND
2022ND10ND
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

NOTE: Northwest Harris County Municipal Utility District 6 purchases water from North Harris County Regional Water Authority which is required to test for dalapon. Sample information shown below was taken by North Harris County Regional Water Authority.

Date Lab ID Result
2018-09-18AE40444ND
2019-06-25AE71959ND
2020-07-06AF18159ND
2021-06-29AF59889ND
2022-05-10AF96244ND
2023-05-12AG40498ND