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EWG's Tap Water Database — 2021 UPDATE

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2,4,5-T

Montara Water and Sanitary District

2,4,5-Trichlorophenoxyacetic acid (2,4,5-T) is a herbicide banned in the U.S. since 1985. It was formerly used on residential and commercial lawns, and occasionally on food crops. 2,4,5-T contained the impurity dioxin, which is highly toxic to people and wildlife.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND40ND
2016ND80ND
2017ND20ND
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-275810-014-1020ND
2014-08-275810-011-0900ND
2014-08-275810-003-1000ND
2014-08-275810-001-1140ND
2014-12-015810-011-1350ND
2014-12-085810-014-1030ND
2014-12-085810-003-1110ND
2014-12-085810-001-1110ND
2015-10-191233-030-0850ND
2015-10-191233-032-1015ND
2015-10-191233-031-1050ND
2015-12-235810-015-0925ND
2016-01-285810-011-0930ND
2016-03-145810-015-0850ND
2016-05-195810-010-1030ND
2016-05-195810-008-0950ND
2016-05-315810-012-1000ND
2016-08-245810-012-0945ND
2016-08-245810-010-1100ND
2016-08-245810-008-1015ND
2017-07-205810-001-0930ND
2017-07-205810-003-1120ND