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EWG's Tap Water Database — 2021 UPDATE

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Chlorite

Brunswick County Water System

Chlorite is a disinfection byproduct resulting from water treatment with chlorine dioxide. Chlorite decreases hemoglobin levels and causes other hematologic effects. Read More.

Chlorite also forms when chlorine dioxide is used as a bleaching agent for textiles, paper pulp, flour and oils, and from the use of chlorine dioxide in food and packaging.� In 2009, California published a public health goal of 50 parts per billion for chlorite in drinking water. California state scientists reported that chlorite causes red blood cell damage, affects sperm and thyroid function, and may alter behavior and neurodevelopment of rat pups exposed in the womb.

Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

218

Samples

8

Samples exceeding legal limit (MCL)

216

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014655.0 ppb3230ND - 1,250.0 ppb
2015524.2 ppb3636330.0 ppb - 740.0 ppb
2016547.9 ppb3939230.0 ppb - 1,010.0 ppb
2017428.6 ppb3636210.0 ppb - 690.0 ppb
2018464.7 ppb3636160.0 ppb - 660.0 ppb
2019429.7 ppb3939210.0 ppb - 590.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 50 ppb

The EWG Health Guideline of 50 ppb for chlorite was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against change in blood chemistry.

EPA Maximum Contaminant
Level (MCL) 1,000 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-1637729_14-01631980.0 ppb
2014-01-1637729_14-01633960.0 ppb
2014-02-2037729_14-049631,080.0 ppb
2014-02-2037729_14-049651,080.0 ppb
2014-03-0737729_14-065441,170.0 ppb
2014-03-0737729_14-065451,240.0 ppb
2014-03-0837729_14-066321,140.0 ppb
2014-03-0837729_14-066331,250.0 ppb
2014-03-0937729_14-066361,240.0 ppb
2014-03-0937729_14-06637660.0 ppb
2014-03-1737729_14-07534720.0 ppb
2014-03-1737729_14-07535620.0 ppb
2014-04-0337729_14-09418600.0 ppb
2014-04-0337729_14-09419600.0 ppb
2014-05-1237729_14-13209540.0 ppb
2014-05-1237729_14-13211570.0 ppb
2014-06-0537729_14-15952580.0 ppb
2014-06-0537729_14-15954380.0 ppb
2014-07-1037729_14-20358460.0 ppb
2014-07-1037729_14-20360400.0 ppb
2014-08-1422955-5251.0 ppb
2014-08-1422955-4352.0 ppb
2014-09-1123071-4490.0 ppb
2014-09-1123071-06398.0 ppb
2014-10-0223215-1428.0 ppb
2014-10-0223215-3458.0 ppb
2014-11-0637729_14-33681ND
2014-11-0637729_14-33683ND
2014-11-0623461-3510.0 ppb
2014-11-0623461-1624.0 ppb
2014-12-0437729_14-36757580.0 ppb
2014-12-0437729_14-36759600.0 ppb
2015-01-15470.0 ppb
2015-01-15380.0 ppb
2015-01-15420.0 ppb
2015-02-12421.0 ppb
2015-02-12409.0 ppb
2015-02-12472.0 ppb
2015-03-05721.0 ppb
2015-03-05711.0 ppb
2015-03-05677.0 ppb
2015-04-16500.0 ppb
2015-04-16450.0 ppb
2015-04-16470.0 ppb
2015-05-14440.0 ppb
2015-05-14430.0 ppb
2015-05-14440.0 ppb
2015-06-12620.0 ppb
2015-06-12740.0 ppb
2015-06-12590.0 ppb
2015-07-16600.0 ppb
2015-07-16330.0 ppb
2015-07-16440.0 ppb
2015-08-06420.0 ppb
2015-08-06410.0 ppb
2015-08-06610.0 ppb
2015-09-03670.0 ppb
2015-09-03570.0 ppb
2015-09-03490.0 ppb
2015-10-16610.0 ppb
2015-10-16590.0 ppb
2015-10-16720.0 ppb
2015-11-13560.0 ppb
2015-11-13500.0 ppb
2015-11-13630.0 ppb
2015-12-03390.0 ppb
2015-12-03500.0 ppb
2015-12-03470.0 ppb
2016-01-1437729_16-01404510.0 ppb
2016-01-1437729_16-01405430.0 ppb
2016-01-1437729_16-01406510.0 ppb
2016-02-1137729_16-04377580.0 ppb
2016-02-1137729_16-04379700.0 ppb
2016-02-1137729_16-04380720.0 ppb
2016-02-2237729_16-05412670.0 ppb
2016-02-2237729_16-05413700.0 ppb
2016-02-2237729_16-054141,010.0 ppb
2016-03-1037729_16-07685670.0 ppb
2016-03-1037729_16-07686560.0 ppb
2016-03-1037729_16-07687660.0 ppb
2016-05-0537729_16-14089550.0 ppb
2016-05-0537729_16-14090540.0 ppb
2016-05-0537729_16-14091550.0 ppb
2016-05-1937729_16-15680420.0 ppb
2016-05-1937729_16-15681480.0 ppb
2016-05-1937729_16-15682570.0 ppb
2016-06-0937729_16-18288430.0 ppb
2016-06-0937729_16-18289430.0 ppb
2016-06-0937729_16-18290520.0 ppb
2016-07-0837729_16-22228340.0 ppb
2016-07-0837729_16-22229380.0 ppb
2016-07-0837729_16-22230520.0 ppb
2016-08-0537729_16-26398660.0 ppb
2016-08-0537729_16-26399800.0 ppb
2016-08-0537729_16-26400460.0 ppb
2016-09-0737729_16-30749750.0 ppb
2016-09-0737729_16-30750710.0 ppb
2016-09-0737729_16-30751640.0 ppb
2016-10-0637729_16-35014340.0 ppb
2016-10-0637729_16-35015240.0 ppb
2016-10-0637729_16-35016480.0 ppb
2016-11-0437729_16-38386570.0 ppb
2016-11-0437729_16-38388230.0 ppb
2016-11-0437729_16-38387250.0 ppb
2016-12-1537729_16-43477660.0 ppb
2016-12-1537729_16-43485630.0 ppb
2016-12-1537729_16-43490500.0 ppb
2017-01-2037729_17-02391450.0 ppb
2017-01-2037729_17-02392460.0 ppb
2017-01-2037729_17-02390390.0 ppb
2017-02-2337729_17-06280550.0 ppb
2017-02-2337729_17-06279510.0 ppb
2017-02-2337729_17-06281460.0 ppb
2017-03-2437729_17-09894500.0 ppb
2017-03-2437729_17-09897570.0 ppb
2017-03-2437729_17-09898580.0 ppb
2017-04-2737729_17-14108380.0 ppb
2017-04-2737729_17-14109390.0 ppb
2017-04-2737729_17-14105480.0 ppb
2017-05-0937729_17-15346690.0 ppb
2017-05-0937729_17-15349380.0 ppb
2017-05-0937729_17-15350490.0 ppb
2017-06-1537729_17-20168400.0 ppb
2017-06-1537729_17-20171280.0 ppb
2017-06-1537729_17-20172310.0 ppb
2017-07-1337729_17-24209360.0 ppb
2017-07-1337729_17-24210250.0 ppb
2017-07-1337729_17-24211210.0 ppb
2017-08-1737729_17-29631380.0 ppb
2017-08-1737729_17-29632310.0 ppb
2017-08-1737729_17-29630460.0 ppb
2017-09-1937729_17-34623610.0 ppb
2017-09-1937729_17-34621480.0 ppb
2017-09-1937729_17-34622540.0 ppb
2017-10-1037729_17-37851430.0 ppb
2017-10-1037729_17-37853510.0 ppb
2017-10-1037729_17-37854470.0 ppb
2017-11-1337729_17-42675430.0 ppb
2017-11-1337729_17-42678340.0 ppb
2017-11-1337729_17-42679390.0 ppb
2017-12-0437729_17-45645310.0 ppb
2017-12-0437729_17-45646340.0 ppb
2017-12-0437729_17-45647340.0 ppb
2018-01-1637729_18-01686 620.0 ppb
2018-01-1637729_18-01687 640.0 ppb
2018-01-1637729_18-01688 610.0 ppb
2018-02-0637729_18-04488 480.0 ppb
2018-02-0637729_18-04490 420.0 ppb
2018-02-0637729_18-04491 340.0 ppb
2018-03-0537729_18-08929 540.0 ppb
2018-03-0537729_18-08930 500.0 ppb
2018-03-0537729_18-08931 430.0 ppb
2018-04-0937729_18-13769 160.0 ppb
2018-04-0937729_18-13783 370.0 ppb
2018-04-0937729_18-13784 290.0 ppb
2018-05-0137729_18-16940 200.0 ppb
2018-05-0137729_18-16941 450.0 ppb
2018-05-0137729_18-16942 560.0 ppb
2018-06-1437729_18-23914 330.0 ppb
2018-06-1437729_18-23915 570.0 ppb
2018-06-1437729_18-23916 390.0 ppb
2018-07-0537729_18-27037 490.0 ppb
2018-07-0537729_18-27039 520.0 ppb
2018-07-0537729_18-27040 640.0 ppb
2018-08-0937729_18-32853 270.0 ppb
2018-08-0937729_18-32854 290.0 ppb
2018-08-0937729_18-32855 350.0 ppb
2018-09-0737729_18-37751 330.0 ppb
2018-09-0737729_18-37752 340.0 ppb
2018-09-0737729_18-37753 400.0 ppb
2018-10-0237729_18-40496 610.0 ppb
2018-10-0237729_18-40497 530.0 ppb
2018-10-0237729_18-40498 590.0 ppb
2018-11-0637729_18-46027 530.0 ppb
2018-11-0637729_18-46028 540.0 ppb
2018-11-0637729_18-46029 550.0 ppb
2018-12-0637729_18-51043 570.0 ppb
2018-12-0637729_18-51047 660.0 ppb
2018-12-0637729_18-51048 620.0 ppb
2019-01-1037729_19-01733 420.0 ppb
2019-01-1037729_19-01734 380.0 ppb
2019-01-1037729_19-01735 310.0 ppb
2019-02-0737729_19-05507 460.0 ppb
2019-02-0737729_19-05508 420.0 ppb
2019-02-0737729_19-05509 410.0 ppb
2019-03-0737729_19-09544 410.0 ppb
2019-03-0737729_19-09547 360.0 ppb
2019-03-0737729_19-09548 390.0 ppb
2019-04-1237729_19-15132 370.0 ppb
2019-04-1237729_19-15133 360.0 ppb
2019-04-1237729_19-15134 310.0 ppb
2019-05-0937729_19-19035 400.0 ppb
2019-05-0937729_19-19037 510.0 ppb
2019-05-0937729_19-19038 340.0 ppb
2019-06-1037729_19-23941 440.0 ppb
2019-06-1037729_19-23942 370.0 ppb
2019-06-1037729_19-23943 340.0 ppb
2019-07-1137729_19-28958 410.0 ppb
2019-07-1137729_19-28959 210.0 ppb
2019-07-1137729_19-28960 280.0 ppb
2019-08-1337729_19-34446 430.0 ppb
2019-08-1337729_19-34448 430.0 ppb
2019-08-1337729_19-34449 560.0 ppb
2019-09-1337729_19-39466 530.0 ppb
2019-09-1337729_19-39467 460.0 ppb
2019-09-1337729_19-39468 430.0 ppb
2019-10-0137729_19-42441 400.0 ppb
2019-10-0137729_19-42445 430.0 ppb
2019-10-0137729_19-42447 510.0 ppb
2019-10-2137729_19-45324 530.0 ppb
2019-10-2137729_19-45325 470.0 ppb
2019-10-2137729_19-45326 470.0 ppb
2019-11-2137729_19-49897 530.0 ppb
2019-11-2137729_19-49898 510.0 ppb
2019-11-2137729_19-49899 470.0 ppb
2019-12-0537729_19-51869 570.0 ppb
2019-12-0537729_19-51870 590.0 ppb
2019-12-0537729_19-51871 540.0 ppb