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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Rochester

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

MORE ABOUT THIS CONTAMINANT

 

94

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND320ND
2015N/A00N/A
2016ND430ND
2017ND50ND
2018ND140ND
2019N/A00N/A

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
2014-05-1914E2396-02ND
2014-05-1914E2396-03ND
2014-05-1914E2400-03ND
2014-05-1914E2406-01ND
2014-05-1914E2406-02ND
2014-05-1914E2419-02ND
2014-05-1914E2394-01ND
2014-06-0214F0254-01ND
2014-06-0214F0261-02ND
2014-06-0214F0261-01ND
2014-06-0214F0260-01ND
2014-06-0214F0256-01ND
2014-06-0214F0243-02ND
2014-06-0214F0243-01ND
2014-09-1514I0882-01ND
2014-09-1514I0887-01ND
2014-09-1514I0885-01ND
2014-09-1514I0883-01ND
2014-09-1614I0880-03ND
2014-09-1614I0879-01ND
2014-09-1614I0880-01ND
2014-09-1614I0884-01ND
2014-09-1614I0879-03ND
2014-09-1614I0886-01ND
2014-09-1614I0886-02ND
2014-09-1614I0886-03ND
2014-09-1614I0879-02ND
2014-09-1614I0880-02ND
2014-11-2014K0986-02ND
2014-11-2014K0987-04ND
2014-11-2014K0987-02ND
2014-11-2014K0986-01ND
2016-04-043424552ND
2016-04-043424538ND
2016-04-043424519ND
2016-04-043424507ND
2016-04-043424495ND
2016-04-043424484ND
2016-04-043424473ND
2016-04-043424461ND
2016-04-043424435ND
2016-04-043424445ND
2016-04-053425186ND
2016-04-053425262ND
2016-04-053425248ND
2016-04-053425221ND
2016-04-053425212ND
2016-04-053425202ND
2016-04-053425194ND
2016-04-053425177ND
2016-04-053425169ND
2016-04-053425161ND
2016-04-133430433ND
2016-04-133430449ND
2016-07-193497119ND
2016-07-193497043ND
2016-07-193497100ND
2016-07-193497106ND
2016-07-193497126ND
2016-07-193497132ND
2016-07-193497013ND
2016-07-193497001ND
2016-07-193496980ND
2016-07-193496987ND
2016-07-253502878ND
2016-07-253502905ND
2016-07-253502873ND
2016-07-253502868ND
2016-07-253502829ND
2016-07-253502083ND
2016-07-253502078ND
2016-07-253502073ND
2016-07-253502037ND
2016-07-253502061ND
2016-12-2716L0919-01ND
2017-03-0917C0558-02ND
2017-06-1917F1297-01ND
2017-09-2617I1233-02ND
2017-09-2617I1233-01ND
2017-09-2617I1225-01ND
2018-03-2918C1134-01ND
2018-06-1918F1339-02ND
2018-06-1918F1351-02ND
2018-06-1918F1348-04ND
2018-06-1918F1348-02ND
2018-06-1918F1334-03ND
2018-06-1918F1334-02ND
2018-09-2518I1339-01ND
2018-09-2518I1339-02ND
2018-09-2518I1339-03ND
2018-09-2518I1341-02ND
2018-09-2518I1341-03ND
2018-09-2518I1341-04ND
2018-12-2718L0843-02ND