Know Your Environment. Protect Your Health.

Alachlor (Lasso)

Cooper County Consolidated Public Water Supply District # 1

NOTE: Cooper County Consolidated Public Water Supply District # 1 purchases water from Boonville PWS which is required to test for alachlor (lasso). Sample information shown below was taken by Boonville PWS.

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

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND40ND
2020ND40ND
2021ND40ND
2022ND40ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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

NOTE: Cooper County Consolidated Public Water Supply District # 1 purchases water from Boonville PWS which is required to test for alachlor (lasso). Sample information shown below was taken by Boonville PWS.

Date Lab ID Result
2018-02-27AD14834ND
2018-05-23AD20839ND
2018-08-22AD31540ND
2018-11-29AD36120ND
2019-03-08AD39922ND
2019-05-21AD47806ND
2019-08-28AD54394ND
2019-11-20AD58419ND
2020-02-242001431ND
2020-05-272008890ND
2020-08-192013087ND
2020-12-092018026ND
2021-02-232100660ND
2021-05-262110934ND
2021-08-232115277ND
2021-11-232119511ND
2022-02-222201954ND
2022-05-232211549ND
2022-09-132216237ND
2022-11-282221165ND
2023-02-232300575ND
2023-05-222308124ND
2023-09-192313319ND