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National Drinking Water Database


Dicamba in Illinois


Dicamba is an herbicide applied in agriculture, rangeland, pasture and industry; it is used for corn, wheat and other crops. [read more]

The Most Polluted Communities in Illinois

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

Ranked by highest average Dicamba level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Country Acres Mhp (La Salle County)
Des Plaines, IL
2951 of 21.65 ppb
(0 to 3.3 ppb)
2Decatur
Decatur, IL
81,8601 of 10.71 ppb
(0.71 ppb)
3Kinkaid Area Water System
Murphysboro, IL
11 of 110.03 ppb
(0 to 0.3 ppb)
4LA Harpe
La Harpe, IL
1,4002 of 120.03 ppb
(0 to 0.19 ppb)
5Farina
Farina, IL
6001 of 130.03 ppb
(0 to 0.34 ppb)

Health Based Limits for Dicamba

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.3000 ppb
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.4000 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.18000 ppb

Violation Summary for Dicamba in Illinois

There are no violations reported for this contaminant in Illinois