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Bromide in Illinois

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Bromide is a naturally occurring element found in surface waters and groundwater and contributes to the formation of toxic tap water disinfection byproducts.

Bromide Bromide is an ionic form of the naturally occurring element bromine. Bromide is a constituent of some groundwater and coastal waters due to saltwater intrusion; it contributes to the formation of toxic tap water disinfection byproducts. It is also a component of crude oil extraction brines, and is used in making fumigants, flameproofing agents, dyes and sanitizers.

The Most Polluted Communities in Illinois

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

Ranked by highest average Bromide level

Rank	System	Population Served	Positive test results of total reported tests	Average Level (Range)
1	Clinton Clinton, IL	7,500	1 of 1	180 ppb (180 ppb)
2	Findlay Findlay, IL	800	40 of 53	163.98 ppb (0 to 240 ppb)
3	LA Salle Lasalle, IL	9,700	45 of 46	141.55 ppb (0 to 193 ppb)
4	Central Lake County Jawa Lake Bluff, IL	1	51 of 64	25.2 ppb (0 to 68 ppb)
5	Charleston Charleston, IL	15,500	27 of 35	12.33 ppb (0 to 31 ppb)
6	Sublette Sublette, IL	425	49 of 64	11.99 ppb (0 to 28 ppb)

Health Based Limits for Bromide

There are no health based standards that EWG is using for this chemical

Violation Summary for Bromide in Illinois

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Illinois since 2004

Violation Type	Number of Violations
Failure to monitor regularly	1