Know Your Environment. Protect Your Health.

Dalapon

Harris County Municipal Utility District 255

NOTE: Harris County Municipal Utility District 255 purchases water from Horsepen Bayou Municipal Utility District which is required to test for dalapon. Sample information shown below was taken by Horsepen Bayou Municipal Utility District.

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

 

52

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND80ND
2020ND80ND
2021ND80ND
2022ND80ND
2023ND80ND

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: Harris County Municipal Utility District 255 purchases water from Horsepen Bayou Municipal Utility District which is required to test for dalapon. Sample information shown below was taken by Horsepen Bayou Municipal Utility District.

Date Lab ID Result
2018-02-05AE12218ND
2018-02-05AE12203ND
2018-05-03AE25043ND
2018-05-03AE25041ND
2018-08-01AE35240ND
2018-08-01AE35256ND
2018-11-19AE46447ND
2018-11-19AE46452ND
2019-02-20AE55002ND
2019-02-20AE55003ND
2019-05-28AE68181ND
2019-05-28AE68184ND
2019-08-14AE78583ND
2019-08-14AE78586ND
2019-10-02AE85499ND
2019-10-02AE85500ND
2020-02-03AE96532ND
2020-02-03AE96534ND
2020-02-03AE96646ND
2020-04-27AF08241ND
2020-04-27AF08242ND
2020-04-27AF08289ND
2020-07-28AF20868ND
2020-07-28AF20891ND
2020-11-23AF35439ND
2020-11-23AF35440ND
2021-03-23AF47843ND
2021-03-23AF47844ND
2021-06-09AF57182ND
2021-06-09AF57183ND
2021-08-09AF65346ND
2021-08-09AF65350ND
2021-12-06AF77972ND
2021-12-06AF77975ND
2022-01-24AF81254ND
2022-01-24AF81257ND
2022-05-03AF95270ND
2022-05-03AF95284ND
2022-07-11AG04001ND
2022-07-11AG03999ND
2022-12-02AG20677ND
2022-12-02AG20680ND
2023-01-23AG25727ND
2023-01-23AG25728ND
2023-05-10AG39938ND
2023-05-10AG40003ND
2023-05-10AG40086ND
2023-05-10AG40087ND
2023-08-15AG52606ND
2023-08-15AG52608ND
2023-10-03AG58222ND
2023-10-03AG58226ND