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National Drinking Water Database


Acetochlor in Iowa


Acetochlor is an herbicide used on cabbage, citrus, coffee and corn crops; it is a probable human carcinogen.

The Most Polluted Communities in Iowa

3 water utilities reported detecting Acetochlor in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Acetochlor level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Graettinger Municipal Water Supply
Graettinge, IA
9337 of 70.99 ppb
(0.4 to 1.7 ppb)
2City of Holstein
Holstein, IA
1,4771 of 10.6 ppb
(0.6 ppb)
3Cedar Rapids Water Department
Cedar Rapi, IA
124,4884 of 520.02 ppb
(0 to 0.4 ppb)

Health Based Limits for Acetochlor

StandardDescriptionLevel
Health-Based Screening LevelA benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.1 ppb-100 ppb

Violation Summary for Acetochlor in Iowa

There are no violations reported for this contaminant in Iowa