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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Connecticut Water Company - Northern Region-Western System

Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.

MORE ABOUT THIS CONTAMINANT

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND10ND
2015ND200ND
2016ND30ND
2017ND110ND
2018ND30ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 2 ppb

The legal limit for alachlor, established in 1991, was based on toxicity studies in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-20140325CWCSOC2ND
2015-01-203173050ND
2015-02-113185965ND
2015-03-193210166ND
2015-03-193210176ND
2015-03-303216191ND
2015-03-313216990ND
2015-04-223230624ND
2015-04-223230632ND
2015-04-223230616ND
2015-04-273231831ND
2015-04-283232542ND
2015-05-263249452ND
2015-05-283251624ND
2015-06-12BJ30561SOC2ND
2015-07-01BJ40227SOC2ND
2015-07-02BJ41078SOC2ND
2015-07-30BJ65812SOC2ND
2015-08-13BJ73997SOC2ND
2015-08-21BJ79580SOC2ND
2015-08-28BJ83828SOC2ND
2016-01-27BK58056SOC2ND
2016-05-25BN40004SOC2ND
2016-06-23BN62227SOC2ND
2017-03-03BX79851SOC2ND
2017-03-03BX79849SOC2ND
2017-04-06BY00572SOC2ND
2017-04-21BY07960SOC2ND
2017-04-21BY07962SOC2ND
2017-05-30BY30818SOC2ND
2017-06-01BY32097SOC2ND
2017-07-07BY54443SOC2ND
2017-07-14BY60158SOC2ND
2017-07-27BY73973SOC2ND
2017-08-11BY83260SOC2ND
2018-01-31BZ82950SOC2ND
2018-06-28CA80715SOC2ND
2018-07-26CA99050ND
2019-01-09SOC 200518249ND
2019-03-11SOC 200524185ND