Chlorite

Midwest City

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	10.6 ppb	12	3	ND - 50.0 ppb
2015	19.4 ppb	12	5	ND - 65.8 ppb
2016	109.9 ppb	12	10	ND - 270.0 ppb
2017	ND	12	0	ND
2018	45.7 ppb	12	9	ND - 83.8 ppb
2019	105.6 ppb	12	12	28.1 ppb - 225.0 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	535237	ND
2014-01-06	535236	ND
2014-01-06	535235	ND
2014-04-07	536661	ND
2014-04-07	536660	ND
2014-04-07	536659	ND
2014-07-08	538561	ND
2014-07-08	538560	ND
2014-07-08	538562	ND
2014-10-09	540469	38.2 ppb
2014-10-09	540468	50.0 ppb
2014-10-09	540467	39.0 ppb
2015-01-14	541936	ND
2015-01-14	541935	65.8 ppb
2015-01-14	541934	55.6 ppb
2015-04-06	543127	ND
2015-04-06	543128	ND
2015-04-06	543129	ND
2015-07-08	545280	ND
2015-07-08	545279	ND
2015-07-08	545278	ND
2015-10-05	546807	38.0 ppb
2015-10-05	546806	51.0 ppb
2015-10-05	546805	22.4 ppb
2016-01-11	SDWA-1002124-00	236.0 ppb
2016-01-11	SDWA-1002122-00	270.0 ppb
2016-01-11	SDWA-1002123-00	252.0 ppb
2016-04-14	6D14017-03	188.0 ppb
2016-04-14	6D14017-02	126.0 ppb
2016-04-14	6D14017-01	136.0 ppb
2016-07-14	6G14049-03	ND
2016-07-14	6G14049-02	14.7 ppb
2016-07-14	6G14049-01	ND
2016-10-11	6J12121-02	40.3 ppb
2016-10-11	6J12121-03	22.8 ppb
2016-10-11	6J12121-01	33.1 ppb
2017-01-17	7A17096-03	ND
2017-01-17	7A17096-02	ND
2017-01-17	7A17096-01	ND
2017-04-13	7D13082-03	ND
2017-04-13	7D13082-02	ND
2017-04-13	7D13082-01	ND
2017-07-13	7G13107-02	ND
2017-07-13	7G13107-01	ND
2017-07-13	7G13107-03	ND
2017-10-17	7J18043-03	ND
2017-10-17	7J18043-02	ND
2017-10-17	7J18043-01	ND
2018-01-04	8A04039-03	66.5 ppb
2018-01-04	8A04039-02	75.2 ppb
2018-01-04	8A04039-01	70.4 ppb
2018-04-05	AD05075-01	40.1 ppb
2018-04-05	AD05075-02	37.6 ppb
2018-04-05	AD05075-03	36.5 ppb
2018-07-10	AG10058-03	ND
2018-07-10	AG10058-02	ND
2018-07-10	AG10058-01	ND
2018-10-02	AJ02079-03	56.2 ppb
2018-10-02	AJ02079-02	83.8 ppb
2018-10-02	AJ02079-01	82.3 ppb
2019-01-08	BA08081-03	169.0 ppb
2019-01-08	BA08081-01	191.0 ppb
2019-01-08	BA08081-02	225.0 ppb
2019-04-01	BD02050-03	91.6 ppb
2019-04-01	BD02050-02	86.1 ppb
2019-04-01	BD02050-01	92.2 ppb
2019-07-02	BG02087-03	110.0 ppb
2019-07-02	BG02087-02	28.1 ppb
2019-07-02	BG02087-01	123.0 ppb
2019-10-16	BJ17042-02	47.2 ppb
2019-10-16	BJ17042-03	53.6 ppb
2019-10-16	BJ17042-01	50.4 ppb