Chlorite

Chlorite is a byproduct formed when chlorine dioxide is used to disinfect drinking water. It can cause anemia and affect the nervous system in high doses.

Chlorite is a regulated disinfection byproduct that forms when chlorine dioxide is used to treat drinking water. The EPA has set a maximum contaminant level of 1.0 mg/L for chlorite in public water systems. Water utilities typically measure chlorite levels using ion chromatography. While chlorine dioxide is an effective disinfectant, water treatment plants must carefully balance disinfection needs with minimizing byproduct formation to protect public health and comply with regulations.

People affected
18.5M
Utilities with this contaminant
330
States with this contaminant
24

Utilities with the highest levels of this contaminant

UtilityService AreasLevelPopulation Served
JA
Jasper Water Works And Sewer Board
Jasper, AL

0.777 ppm

28,638

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E
E J Water Coop
Jasper County, IL

0.766 ppm

23,944

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SH
Shawnee Municipal Authority
Pottawatomie County, OK

0.739 ppm

29,990

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MA
Maryville Pws
Maryville, MO

0.729 ppm

10,775

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LA
Lake Of Egypt Pwd
Marion, IL

0.713 ppm

11,368

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CI
City Of Mineral Wells
Palo Pinto County, TX

0.694 ppm

15,090

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CI
City Of Port Arthur
Jefferson County, TX

0.645 ppm

53,818

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SM
Smiths Water And Sewer Authority
Smiths, AL

0.630 ppm

31,695

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SM
Smithville Pws
Smithville, MO

0.608 ppm

10,290

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AL
Alexander City Water Department
Alexander City, AL

0.606 ppm

29,565

View

Sources