Chlorite

Maverick County Airport 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.

Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

207

Samples

Samples exceeding legal limit (MCL)

162

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	307.2 ppb	36	32	ND - 750.0 ppb
2015	284.5 ppb	33	21	ND - 760.0 ppb
2016	367.0 ppb	30	19	ND - 1,620.0 ppb
2017	229.7 ppb	36	26	ND - 860.0 ppb
2018	465.3 ppb	36	36	40.0 ppb - 3,200.0 ppb
2019	709.2 ppb	36	36	40.0 ppb - 2,190.0 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
2014-01-27	238267	470.0 ppb
2014-01-27	238265	530.0 ppb
2014-01-27	238266	460.0 ppb
2014-02-27	239349	110.0 ppb
2014-02-27	239351	560.0 ppb
2014-02-27	239350	120.0 ppb
2014-03-18	240144	100.0 ppb
2014-03-18	240146	ND
2014-03-18	240145	100.0 ppb
2014-04-28	241499	130.0 ppb
2014-04-28	241498	100.0 ppb
2014-04-28	241497	150.0 ppb
2014-05-22	242507	ND
2014-05-22	242508	ND
2014-05-22	242509	ND
2014-06-25	243495	750.0 ppb
2014-06-25	243494	650.0 ppb
2014-06-25	243493	730.0 ppb
2014-07-16	244465	150.0 ppb
2014-07-16	244466	150.0 ppb
2014-07-16	244464	140.0 ppb
2014-08-20	369450	500.0 ppb
2014-08-20	369449	510.0 ppb
2014-08-20	369451	470.0 ppb
2014-09-30	373197	300.0 ppb
2014-09-30	373199	320.0 ppb
2014-09-30	373198	310.0 ppb
2014-10-22	375625	260.0 ppb
2014-10-22	375624	190.0 ppb
2014-10-22	375626	300.0 ppb
2014-11-19	378436	240.0 ppb
2014-11-19	378438	230.0 ppb
2014-11-19	378437	230.0 ppb
2014-12-17	381233	610.0 ppb
2014-12-17	381234	620.0 ppb
2014-12-17	381232	570.0 ppb
2015-01-12	383295	190.0 ppb
2015-01-12	383293	200.0 ppb
2015-01-12	383294	200.0 ppb
2015-02-18	387150	710.0 ppb
2015-02-18	387151	410.0 ppb
2015-02-18	387152	420.0 ppb
2015-03-19	389729	140.0 ppb
2015-03-19	389728	130.0 ppb
2015-03-19	389727	30.0 ppb
2015-04-15	392242	760.0 ppb
2015-04-15	392243	730.0 ppb
2015-04-15	392244	730.0 ppb
2015-05-18	395542	430.0 ppb
2015-05-18	395541	490.0 ppb
2015-05-18	395543	430.0 ppb
2015-06-22	399240	670.0 ppb
2015-06-22	299241	670.0 ppb
2015-06-22	399242	680.0 ppb
2015-07-22	402461	540.0 ppb
2015-07-22	402463	290.0 ppb
2015-07-22	402462	540.0 ppb
2015-09-24	408945	ND
2015-09-24	408944	ND
2015-09-24	408946	ND
2015-10-22	411978	ND
2015-10-22	411979	ND
2015-10-22	411980	ND
2015-11-19	414905	ND
2015-11-19	414906	ND
2015-11-19	414904	ND
2015-12-10	417308	ND
2015-12-10	417307	ND
2015-12-10	417306	ND
2016-01-13	420187	340.0 ppb
2016-01-13	420186	ND
2016-01-13	420185	ND
2016-02-11	423467	ND
2016-02-11	423468	ND
2016-02-11	423469	ND
2016-03-15	426610	450.0 ppb
2016-03-15	426611	370.0 ppb
2016-03-15	426612	ND
2016-04-12	429521	370.0 ppb
2016-04-12	429522	380.0 ppb
2016-04-12	429523	390.0 ppb
2016-06-16	436638	1,300.0 ppb
2016-06-16	436636	1,580.0 ppb
2016-06-16	436637	1,620.0 ppb
2016-07-22	440200	ND
2016-07-22	440199	ND
2016-07-22	440201	1,030.0 ppb
2016-08-19	443202	250.0 ppb
2016-08-19	443203	300.0 ppb
2016-08-19	443204	270.0 ppb
2016-09-22	446818	170.0 ppb
2016-09-22	446817	340.0 ppb
2016-09-22	446816	350.0 ppb
2016-11-29	453180	490.0 ppb
2016-11-29	453181	510.0 ppb
2016-11-29	453182	500.0 ppb
2016-12-13	454668	ND
2016-12-13	454669	ND
2016-12-13	454670	ND
2017-01-10	457388	860.0 ppb
2017-01-10	457389	860.0 ppb
2017-01-10	457387	ND
2017-02-15	461216	ND
2017-02-15	461214	ND
2017-02-15	461215	ND
2017-03-15	464051	250.0 ppb
2017-03-15	464052	260.0 ppb
2017-03-15	464050	280.0 ppb
2017-04-12	466992	150.0 ppb
2017-04-12	466993	110.0 ppb
2017-04-12	466994	140.0 ppb
2017-05-11	470132	ND
2017-05-11	470130	ND
2017-05-11	470131	20.0 ppb
2017-06-22	474732	120.0 ppb
2017-06-22	474731	80.0 ppb
2017-06-22	474733	120.0 ppb
2017-07-26	478633	240.0 ppb
2017-07-26	478632	290.0 ppb
2017-07-26	478634	220.0 ppb
2017-08-22	482059	30.0 ppb
2017-08-22	482060	30.0 ppb
2017-08-22	482061	ND
2017-09-20	485917	140.0 ppb
2017-09-20	485915	100.0 ppb
2017-09-20	485916	130.0 ppb
2017-10-11	488348	850.0 ppb
2017-10-11	488349	830.0 ppb
2017-10-11	488350	830.0 ppb
2017-11-08	491520	440.0 ppb
2017-11-08	491521	440.0 ppb
2017-11-08	491522	450.0 ppb
2017-12-05	494125	ND
2017-12-05	494123	ND
2017-12-05	494124	ND
2018-01-17	498701	1,700.0 ppb
2018-01-17	498699	3,200.0 ppb
2018-01-17	498700	3,130.0 ppb
2018-02-14	501847	70.0 ppb
2018-02-14	501846	90.0 ppb
2018-02-14	501845	140.0 ppb
2018-03-14	505005	80.0 ppb
2018-03-14	505004	70.0 ppb
2018-03-14	505006	80.0 ppb
2018-04-11	508136	100.0 ppb
2018-04-11	508137	100.0 ppb
2018-04-11	508135	110.0 ppb
2018-05-09	511175	390.0 ppb
2018-05-09	511174	380.0 ppb
2018-05-09	511173	380.0 ppb
2018-06-06	514162	710.0 ppb
2018-06-06	514161	760.0 ppb
2018-06-06	514163	730.0 ppb
2018-07-02	516969	140.0 ppb
2018-07-02	516970	130.0 ppb
2018-07-02	516971	140.0 ppb
2018-08-13	521681	40.0 ppb
2018-08-13	521680	40.0 ppb
2018-08-13	521679	40.0 ppb
2018-09-12	525152	150.0 ppb
2018-09-12	525150	170.0 ppb
2018-09-12	525151	160.0 ppb
2018-10-10	528723	840.0 ppb
2018-10-10	528724	870.0 ppb
2018-10-10	528722	890.0 ppb
2018-11-13	532470	130.0 ppb
2018-11-13	532471	150.0 ppb
2018-11-13	532472	140.0 ppb
2018-12-04	534876	160.0 ppb
2018-12-04	534877	160.0 ppb
2018-12-04	534878	180.0 ppb
2019-01-15	539558	340.0 ppb
2019-01-15	539556	320.0 ppb
2019-01-15	539557	350.0 ppb
2019-02-13	543018	220.0 ppb
2019-02-13	543017	250.0 ppb
2019-02-13	543016	140.0 ppb
2019-03-13	546045	40.0 ppb
2019-03-13	546046	290.0 ppb
2019-03-13	546044	270.0 ppb
2019-04-15	549966	880.0 ppb
2019-04-15	549964	920.0 ppb
2019-04-15	549965	660.0 ppb
2019-05-08	552747	1,000.0 ppb
2019-05-08	552748	960.0 ppb
2019-05-08	552749	940.0 ppb
2019-06-11	556739	1,100.0 ppb
2019-06-11	556740	1,020.0 ppb
2019-06-11	556741	1,020.0 ppb
2019-07-16	561031	730.0 ppb
2019-07-16	561030	670.0 ppb
2019-07-16	561032	750.0 ppb
2019-08-14	564551	2,190.0 ppb
2019-08-14	564550	2,190.0 ppb
2019-08-14	564549	590.0 ppb
2019-09-16	568533	1,440.0 ppb
2019-09-16	568532	1,430.0 ppb
2019-09-16	568534	1,430.0 ppb
2019-10-15	572373	640.0 ppb
2019-10-15	572374	630.0 ppb
2019-10-15	572372	560.0 ppb
2019-11-13	575924	280.0 ppb
2019-11-13	575922	440.0 ppb
2019-11-13	575923	300.0 ppb
2019-12-10	579003	110.0 ppb
2019-12-10	579002	330.0 ppb
2019-12-10	579004	100.0 ppb