Chlorite
Marshalltown Water Works
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 326.3 ppb | 52 | 52 | 140.0 ppb - 380.0 ppb |
2015 | 260.4 ppb | 52 | 52 | 60.0 ppb - 390.0 ppb |
2016 | 341.5 ppb | 52 | 52 | 220.0 ppb - 520.0 ppb |
2017 | 313.7 ppb | 52 | 52 | 90.0 ppb - 500.0 ppb |
2018 | 332.3 ppb | 52 | 52 | 180.0 ppb - 440.0 ppb |
2019 | 333.7 ppb | 52 | 52 | 180.0 ppb - 630.0 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 |
---|---|---|
2014-01-06 | 2025435 | 350.0 ppb |
2014-01-13 | 2026484 | 350.0 ppb |
2014-01-20 | 2029767 | 360.0 ppb |
2014-01-27 | 2029769 | 350.0 ppb |
2014-02-03 | 2030912 | 350.0 ppb |
2014-02-10 | 2031826 | 340.0 ppb |
2014-02-17 | 2034658 | 380.0 ppb |
2014-02-24 | 2035250 | 360.0 ppb |
2014-03-03 | 2036512 | 340.0 ppb |
2014-03-10 | 2039886 | 370.0 ppb |
2014-03-17 | 2039890 | 320.0 ppb |
2014-03-24 | 2041628 | 380.0 ppb |
2014-03-31 | 2041624 | 350.0 ppb |
2014-04-07 | 2042960 | 320.0 ppb |
2014-04-14 | 2043864 | 150.0 ppb |
2014-04-21 | 2046319 | 330.0 ppb |
2014-04-28 | 2046323 | 340.0 ppb |
2014-05-05 | 2048429 | 330.0 ppb |
2014-05-12 | 2049105 | 340.0 ppb |
2014-05-19 | 2050776 | 370.0 ppb |
2014-05-27 | 2052159 | 340.0 ppb |
2014-06-02 | 2053415 | 310.0 ppb |
2014-06-09 | 2055194 | 340.0 ppb |
2014-06-16 | 2056027 | 300.0 ppb |
2014-06-23 | 2057930 | 300.0 ppb |
2014-06-30 | 2059433 | 330.0 ppb |
2014-07-07 | 2060895 | 300.0 ppb |
2014-07-14 | 2061849 | 320.0 ppb |
2014-07-21 | 2064548 | 300.0 ppb |
2014-07-28 | 2064535 | 300.0 ppb |
2014-08-04 | 2068906 | 340.0 ppb |
2014-08-11 | 2068912 | 140.0 ppb |
2014-08-18 | 2070966 | 340.0 ppb |
2014-08-25 | 2073115 | 330.0 ppb |
2014-09-02 | 2074488 | 320.0 ppb |
2014-09-08 | 2077393 | 340.0 ppb |
2014-09-15 | 2077835 | 320.0 ppb |
2014-09-22 | 2079296 | 360.0 ppb |
2014-09-29 | 2080994 | 370.0 ppb |
2014-10-06 | 2084409 | 380.0 ppb |
2014-10-13 | 2085123 | 320.0 ppb |
2014-10-20 | 2086241 | 290.0 ppb |
2014-10-27 | 2087167 | 340.0 ppb |
2014-11-03 | 2089293 | 310.0 ppb |
2014-11-10 | 2090117 | 310.0 ppb |
2014-11-17 | 2092529 | 380.0 ppb |
2014-11-24 | 2092531 | 360.0 ppb |
2014-12-01 | 2093531 | 330.0 ppb |
2014-12-08 | 2095003 | 220.0 ppb |
2014-12-15 | 2096938 | 300.0 ppb |
2014-12-22 | 2098164 | 300.0 ppb |
2014-12-29 | 2098168 | 350.0 ppb |
2015-01-05 | OE208589 | 280.0 ppb |
2015-01-12 | OE209528 | 250.0 ppb |
2015-01-19 | OE210547 | 280.0 ppb |
2015-01-26 | OE211561 | 310.0 ppb |
2015-02-02 | OE212376 | 240.0 ppb |
2015-02-09 | OE213435 | 310.0 ppb |
2015-02-16 | OE214296 | 270.0 ppb |
2015-02-23 | OE215382 | 270.0 ppb |
2015-03-02 | OE216704 | 270.0 ppb |
2015-03-09 | OE218976 | 140.0 ppb |
2015-03-16 | OE221404 | 120.0 ppb |
2015-03-25 | OE224377 | 200.0 ppb |
2015-03-30 | OE225734 | 270.0 ppb |
2015-04-06 | OE228029 | 290.0 ppb |
2015-04-13 | OE230733 | 260.0 ppb |
2015-04-20 | OE233545 | 250.0 ppb |
2015-04-27 | OE236232 | 280.0 ppb |
2015-05-04 | OE238776 | 290.0 ppb |
2015-05-11 | OE241728 | 250.0 ppb |
2015-05-18 | OE244512 | 280.0 ppb |
2015-05-26 | OE247117 | 180.0 ppb |
2015-06-01 | OE249491 | 190.0 ppb |
2015-06-08 | OE252479 | 190.0 ppb |
2015-06-15 | OE255361 | 60.0 ppb |
2015-06-22 | OE258318 | 310.0 ppb |
2015-06-29 | OE261177 | 310.0 ppb |
2015-07-06 | OE263733 | 220.0 ppb |
2015-07-13 | OE266738 | 180.0 ppb |
2015-07-20 | OE269657 | 180.0 ppb |
2015-07-27 | OE272324 | 140.0 ppb |
2015-08-03 | OE275090 | 290.0 ppb |
2015-08-10 | OE278355 | 340.0 ppb |
2015-08-17 | OE281778 | 370.0 ppb |
2015-08-24 | OE285063 | 390.0 ppb |
2015-09-01 | OE288636 | 320.0 ppb |
2015-09-08 | OE290710 | 290.0 ppb |
2015-09-14 | OE293290 | 210.0 ppb |
2015-09-21 | OE296468 | 240.0 ppb |
2015-09-28 | OE299190 | 240.0 ppb |
2015-10-05 | OE302301 | 200.0 ppb |
2015-10-12 | OE305665 | 250.0 ppb |
2015-10-19 | OE307999 | 260.0 ppb |
2015-10-26 | OE310754 | 250.0 ppb |
2015-11-02 | OE313250 | 290.0 ppb |
2015-11-09 | OE315870 | 330.0 ppb |
2015-11-16 | OE318206 | 230.0 ppb |
2015-11-23 | OE320704 | 360.0 ppb |
2015-11-30 | OE322211 | 320.0 ppb |
2015-12-07 | OE324551 | 300.0 ppb |
2015-12-14 | OE327032 | 290.0 ppb |
2015-12-21 | OE329426 | 370.0 ppb |
2015-12-28 | OE330610 | 330.0 ppb |
2016-01-04 | OE331974 | 340.0 ppb |
2016-01-11 | OE334425 | 250.0 ppb |
2016-01-18 | OE336333 | 240.0 ppb |
2016-01-25 | OE338630 | 360.0 ppb |
2016-02-01 | OE340988 | 350.0 ppb |
2016-02-08 | OE342955 | 350.0 ppb |
2016-02-15 | OE345314 | 220.0 ppb |
2016-02-22 | OE347899 | 320.0 ppb |
2016-02-29 | OE350070 | 390.0 ppb |
2016-03-07 | OE352415 | 270.0 ppb |
2016-03-14 | OE355146 | 520.0 ppb |
2016-03-21 | OE357284 | 320.0 ppb |
2016-03-28 | OE359440 | 230.0 ppb |
2016-04-04 | OE361811 | 270.0 ppb |
2016-04-11 | OE364837 | 360.0 ppb |
2016-04-18 | OE367702 | 430.0 ppb |
2016-04-25 | OE370487 | 330.0 ppb |
2016-05-02 | OE373127 | 280.0 ppb |
2016-05-09 | OE375999 | 340.0 ppb |
2016-05-16 | OE378532 | 330.0 ppb |
2016-05-23 | OE381158 | 310.0 ppb |
2016-05-30 | OE383780 | 300.0 ppb |
2016-06-06 | OE385897 | 290.0 ppb |
2016-06-13 | OE388836 | 340.0 ppb |
2016-06-21 | OE392147 | 410.0 ppb |
2016-06-27 | OE394364 | 390.0 ppb |
2016-07-05 | OE397051 | 410.0 ppb |
2016-07-11 | OE399662 | 390.0 ppb |
2016-07-18 | OE402940 | 380.0 ppb |
2016-07-25 | OE406038 | 410.0 ppb |
2016-08-01 | OE408951 | 340.0 ppb |
2016-08-08 | OE412340 | 390.0 ppb |
2016-08-15 | OE415782 | 370.0 ppb |
2016-08-22 | OE418658 | 420.0 ppb |
2016-08-29 | OE421960 | 390.0 ppb |
2016-09-06 | OE425071 | 350.0 ppb |
2016-09-12 | OE427760 | 350.0 ppb |
2016-09-19 | OE430610 | 350.0 ppb |
2016-09-26 | OE433403 | 350.0 ppb |
2016-10-03 | OE436175 | 320.0 ppb |
2016-10-10 | OE438933 | 300.0 ppb |
2016-10-17 | OE441976 | 320.0 ppb |
2016-10-25 | OE445146 | 290.0 ppb |
2016-10-31 | OE447161 | 370.0 ppb |
2016-11-07 | OE449769 | 360.0 ppb |
2016-11-14 | OE452227 | 370.0 ppb |
2016-11-21 | OE454808 | 350.0 ppb |
2016-11-28 | OE456286 | 350.0 ppb |
2016-12-05 | OE458724 | 320.0 ppb |
2016-12-12 | OE461117 | 340.0 ppb |
2016-12-18 | OE463595 | 320.0 ppb |
2016-12-27 | OE465362 | 310.0 ppb |
2017-01-03 | OE466808 | 230.0 ppb |
2017-01-09 | OE468993 | 360.0 ppb |
2017-01-16 | OE470977 | 340.0 ppb |
2017-01-23 | OE473406 | 500.0 ppb |
2017-01-30 | OE475471 | 390.0 ppb |
2017-02-06 | OE478058 | 200.0 ppb |
2017-02-13 | OE480579 | 210.0 ppb |
2017-02-20 | OE482807 | 200.0 ppb |
2017-02-27 | OE485311 | 150.0 ppb |
2017-03-06 | OE487949 | 190.0 ppb |
2017-03-13 | OE490391 | 150.0 ppb |
2017-03-20 | OE492624 | 140.0 ppb |
2017-03-27 | OE495047 | 90.0 ppb |
2017-04-03 | OE497541 | 110.0 ppb |
2017-04-10 | OE500315 | 310.0 ppb |
2017-04-17 | OE502956 | 310.0 ppb |
2017-04-24 | OE505512 | 330.0 ppb |
2017-05-01 | OE508093 | 330.0 ppb |
2017-05-08 | OE510885 | 340.0 ppb |
2017-05-15 | OE513468 | 300.0 ppb |
2017-05-22 | OE516195 | 330.0 ppb |
2017-05-30 | OE518700 | 330.0 ppb |
2017-06-05 | OE520703 | 300.0 ppb |
2017-06-12 | OE523408 | 330.0 ppb |
2017-06-19 | OE526412 | 300.0 ppb |
2017-06-26 | OE529393 | 230.0 ppb |
2017-07-03 | OE533067 | 310.0 ppb |
2017-07-10 | OE535053 | 260.0 ppb |
2017-07-17 | OE538298 | 190.0 ppb |
2017-07-24 | OE541859 | 200.0 ppb |
2017-07-31 | OE544600 | 100.0 ppb |
2017-08-07 | OE548708 | 410.0 ppb |
2017-08-14 | OE551138 | 370.0 ppb |
2017-08-21 | OE555097 | 330.0 ppb |
2017-08-28 | OE558118 | 390.0 ppb |
2017-09-05 | OE561275 | 360.0 ppb |
2017-09-11 | OE563797 | 410.0 ppb |
2017-09-18 | OE566858 | 350.0 ppb |
2017-09-25 | OE569773 | 400.0 ppb |
2017-10-02 | OE573583 | 420.0 ppb |
2017-10-09 | OE575955 | 370.0 ppb |
2017-10-16 | OE578840 | 380.0 ppb |
2017-10-23 | OE581724 | 400.0 ppb |
2017-10-30 | OE584768 | 380.0 ppb |
2017-11-06 | OE587019 | 400.0 ppb |
2017-11-13 | OE590472 | 400.0 ppb |
2017-11-20 | OE592686 | 410.0 ppb |
2017-11-27 | OE594258 | 410.0 ppb |
2017-12-04 | OE597085 | 460.0 ppb |
2017-12-11 | OE600063 | 380.0 ppb |
2017-12-18 | OE602597 | 430.0 ppb |
2017-12-26 | OE604751 | 390.0 ppb |
2018-01-02 | OE606478 | 410.0 ppb |
2018-01-08 | OE608581 | 380.0 ppb |
2018-01-15 | OE611042 | 430.0 ppb |
2018-01-22 | OE613648 | 390.0 ppb |
2018-01-29 | OE616176 | 310.0 ppb |
2018-02-05 | OE618925 | 320.0 ppb |
2018-02-12 | OE622007 | 350.0 ppb |
2018-02-19 | OE624602 | 420.0 ppb |
2018-02-26 | OE627240 | 330.0 ppb |
2018-03-05 | OE629962 | 440.0 ppb |
2018-03-12 | OE632607 | 310.0 ppb |
2018-03-19 | OE635227 | 320.0 ppb |
2018-03-26 | OE637725 | 330.0 ppb |
2018-04-02 | OE640269 | 310.0 ppb |
2018-04-09 | OE643331 | 290.0 ppb |
2018-04-16 | OE646070 | 330.0 ppb |
2018-04-23 | OE649074 | 270.0 ppb |
2018-04-30 | OE651779 | 260.0 ppb |
2018-05-07 | OE654863 | 290.0 ppb |
2018-05-14 | OE657788 | 310.0 ppb |
2018-05-21 | OE660741 | 310.0 ppb |
2018-05-29 | OE663554 | 320.0 ppb |
2018-06-04 | OE665863 | 310.0 ppb |
2018-06-11 | OE668915 | 340.0 ppb |
2018-06-18 | OE672149 | 330.0 ppb |
2018-06-25 | OE675192 | 300.0 ppb |
2018-07-02 | OE678041 | 310.0 ppb |
2018-07-09 | OE680806 | 330.0 ppb |
2018-07-16 | OE684380 | 340.0 ppb |
2018-07-23 | OE687511 | 340.0 ppb |
2018-07-30 | OE690966 | 340.0 ppb |
2018-08-06 | OE694402 | 360.0 ppb |
2018-08-13 | OE698192 | 370.0 ppb |
2018-08-20 | OE701981 | 350.0 ppb |
2018-08-27 | OE705282 | 350.0 ppb |
2018-09-04 | OE708747 | 310.0 ppb |
2018-09-10 | OE711053 | 350.0 ppb |
2018-09-17 | OE714571 | 320.0 ppb |
2018-09-24 | OE717820 | 330.0 ppb |
2018-10-01 | OE721041 | 350.0 ppb |
2018-10-08 | OE724367 | 330.0 ppb |
2018-10-15 | OE727671 | 180.0 ppb |
2018-10-22 | OE730467 | 340.0 ppb |
2018-10-29 | OE733420 | 340.0 ppb |
2018-11-05 | OE735989 | 310.0 ppb |
2018-11-13 | OE739819 | 330.0 ppb |
2018-11-19 | OE742029 | 330.0 ppb |
2018-11-26 | OE743616 | 330.0 ppb |
2018-12-03 | OE746282 | 300.0 ppb |
2018-12-10 | OE749408 | 350.0 ppb |
2018-12-17 | OE751627 | 340.0 ppb |
2018-12-24 | OE754113 | 340.0 ppb |
2019-01-02 | OE755650 | 350.0 ppb |
2019-01-07 | OE757453 | 340.0 ppb |
2019-01-14 | OE760398 | 320.0 ppb |
2019-01-21 | OE762775 | 360.0 ppb |
2019-01-28 | OE765090 | 380.0 ppb |
2019-02-04 | OE767096 | 310.0 ppb |
2019-02-11 | OE769943 | 320.0 ppb |
2019-02-18 | OE772194 | 340.0 ppb |
2019-02-25 | OE774778 | 340.0 ppb |
2019-03-04 | OE777067 | 350.0 ppb |
2019-03-11 | OE780023 | 340.0 ppb |
2019-03-18 | OE782846 | 340.0 ppb |
2019-03-25 | OE785424 | 330.0 ppb |
2019-04-01 | OE788323 | 630.0 ppb |
2019-04-08 | OE791610 | 330.0 ppb |
2019-04-15 | OE794826 | 180.0 ppb |
2019-04-22 | OE798015 | 190.0 ppb |
2019-04-29 | OE801140 | 250.0 ppb |
2019-05-06 | OE804084 | 240.0 ppb |
2019-05-13 | OE808161 | 240.0 ppb |
2019-05-20 | OE810467 | 280.0 ppb |
2019-05-28 | OE814308 | 230.0 ppb |
2019-06-03 | OE815987 | 260.0 ppb |
2019-06-10 | OE819302 | 260.0 ppb |
2019-06-17 | OE822537 | 330.0 ppb |
2019-06-24 | OE825478 | 330.0 ppb |
2019-07-01 | OE828651 | 300.0 ppb |
2019-07-08 | OE831322 | 390.0 ppb |
2019-07-15 | OE834976 | 370.0 ppb |
2019-07-22 | OE838806 | 360.0 ppb |
2019-07-29 | OE841901 | 400.0 ppb |
2019-08-05 | OE845335 | 340.0 ppb |
2019-08-12 | OE848798 | 380.0 ppb |
2019-08-19 | OE852848 | 360.0 ppb |
2019-08-26 | OE856472 | 370.0 ppb |
2019-09-03 | OE859970 | 360.0 ppb |
2019-09-11 | OE864416 | 310.0 ppb |
2019-09-16 | OE866277 | 350.0 ppb |
2019-09-23 | OE869648 | 340.0 ppb |
2019-09-30 | OE872925 | 380.0 ppb |
2019-10-07 | OE876131 | 350.0 ppb |
2019-10-15 | OE879969 | 350.0 ppb |
2019-10-21 | OE883058 | 340.0 ppb |
2019-10-28 | OE886071 | 380.0 ppb |
2019-11-04 | OE889169 | 340.0 ppb |
2019-11-12 | OE892836 | 380.0 ppb |
2019-11-18 | OE895422 | 350.0 ppb |
2019-11-25 | OE898508 | 380.0 ppb |
2019-12-02 | OE900388 | 380.0 ppb |
2019-12-09 | OE903524 | 380.0 ppb |
2019-12-16 | OE906473 | 360.0 ppb |
2019-12-26 | OE910349 | 180.0 ppb |