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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

Harris County Municipal Utility District 122

NOTE: Harris County Municipal Utility District 122 purchases water from Fort Bend County WCID 2 which is required to test for dalapon. Sample information shown below was taken by Fort Bend County WCID 2.

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

MORE ABOUT THIS CONTAMINANT

 

110

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND10ND
2016ND10ND
2017ND10ND
2018ND10ND
2019ND10ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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 122 purchases water from Fort Bend County WCID 2 which is required to test for dalapon. Sample information shown below was taken by Fort Bend County WCID 2.

Date Lab ID Result
2014-02-04AC41346ND
2014-02-04AC41343ND
2014-02-04AC41342ND
2014-02-04AC41347ND
2014-02-04AC41344ND
2014-02-28AC45272ND
2014-02-28AC45273ND
2014-02-28AC45275ND
2014-02-28AC45268ND
2014-04-10AC50197ND
2014-04-10AC50183ND
2014-04-10AC50180ND
2014-04-10AC50181ND
2014-07-02AC58771ND
2014-07-02AC58786ND
2014-07-02AC58784ND
2014-07-02AC58776ND
2014-10-10AC69485ND
2014-10-10AC69494ND
2014-10-10AC69484ND
2014-10-10AC69483ND
2015-02-04AC79318ND
2015-02-04AC79224ND
2015-02-04AC79223ND
2015-02-04AC79225ND
2015-02-04AC79234ND
2015-04-07AC87435ND
2015-04-07AC87433ND
2015-04-07AC87439ND
2015-04-07AC87436ND
2015-07-31AD02025ND
2015-07-31AD02031ND
2015-07-31AD02033ND
2015-07-31AD02028ND
2015-10-16AD10995ND
2015-10-16AD10975ND
2015-10-16AD10976ND
2015-10-16AD10990ND
2016-01-27AD20490ND
2016-01-27AD20382ND
2016-01-27AD20376ND
2016-01-27AD20378ND
2016-01-27AD20385ND
2016-04-21AD33721ND
2016-04-21AD33722ND
2016-04-21AD33727ND
2016-04-21AD33739ND
2016-09-01AD47680ND
2016-09-01AD47645ND
2016-09-01AD47642ND
2016-09-01AD47653ND
2016-10-24AD54265ND
2016-10-24AD54288ND
2016-10-24AD54294ND
2016-10-24AD54266ND
2017-01-05AD63332ND
2017-01-05AD63328ND
2017-01-05AD63330ND
2017-01-05AD63333ND
2017-01-05AD63334ND
2017-01-05AD63183ND
2017-01-05AD63177ND
2017-01-05AD63176ND
2017-01-05AD63175ND
2017-04-04AD78280ND
2017-04-04AD78278ND
2017-04-04AD78281ND
2017-04-04AD78279ND
2017-07-07AD88651ND
2017-07-07AD88648ND
2017-07-07AD88652ND
2017-07-07AD88646ND
2017-10-10AE00071ND
2017-10-10AE00076ND
2017-10-10AE00078ND
2017-10-10AE00072ND
2018-01-09AE08431ND
2018-01-09AE08323ND
2018-01-09AE08322ND
2018-01-09AE08325ND
2018-01-09AE08324ND
2018-04-18AE22972ND
2018-04-18AE22971ND
2018-04-18AE22964ND
2018-04-18AE22999ND
2018-07-19AE33938ND
2018-07-19AE33943ND
2018-07-19AE33944ND
2018-07-19AE33937ND
2018-10-31AE45039ND
2018-10-31AE45040ND
2018-10-31AE45041ND
2018-10-31AE45042ND
2019-01-25AE51744ND
2019-01-25AE51579ND
2019-01-25AE51573ND
2019-01-25AE51577ND
2019-01-25AE51574ND
2019-04-11AE61997ND
2019-04-11AE62000ND
2019-04-11AE62003ND
2019-04-11AE62001ND
2019-07-19AE75230ND
2019-07-19AE75232ND
2019-07-19AE75233ND
2019-07-19AE75231ND
2019-10-08AE85963ND
2019-10-08AE85964ND
2019-10-08AE85962ND
2019-10-08AE85961ND