Know Your Environment. Protect Your Health.

Chlorite

Lacygne, City of

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.

 

71

Samples

1

Samples exceeding legal limit (MCL)

50

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201869.2 ppb123ND - 290.0 ppb
201957.3 ppb113ND - 240.0 ppb
2020322.2 ppb129ND - 1,060.0 ppb
2021359.2 ppb121290.0 ppb - 590.0 ppb
2022465.0 ppb121270.0 ppb - 980.0 ppb
2023340.8 ppb121230.0 ppb - 420.0 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-02-05FEB2018-CHLOR-MAXND
2018-02-05FEB2018-CHLOR-NFCND
2018-02-05FEB2018-CHLOR-AVGND
2018-05-07MAY2018-CHLOR-NFCND
2018-05-07MAY2018-CHLOR-MAXND
2018-05-07MAY2018-CHLOR-AVGND
2018-08-13AUG2018-CHLOR-NFCND
2018-08-13AUG2018-CHLOR-MAXND
2018-08-13AUG2018-CHLOR-AVGND
2018-11-06NOV2018-CHLOR-AVG290.0 ppb
2018-11-06NOV2018-CHLOR-NFC280.0 ppb
2018-11-06NOV2018-CHLOR-MAX260.0 ppb
2019-02-11FEB2019-CHLOR-NFC240.0 ppb
2019-02-11FEB2019-CHLOR-MAX200.0 ppb
2019-02-11FEB2019-CHLOR-AVG190.0 ppb
2019-06-03JUN2019-CHLOR-NFCND
2019-06-03JUN2019-CHLOR-MAXND
2019-06-03JUN2019-CHLOR-AVGND
2019-08-20AUG2019-CHLOR-NFCND
2019-08-20AUG2019-CHLOR-MAXND
2019-11-18NOV2019-CHLOR-MAXND
2019-11-18NOV2019-CHLOR-AVGND
2019-11-18NOV2019-CHLOR-NFCND
2020-02-10JAN2020_CHLOR_MAXND
2020-02-10JAN2020-CHLOR_AVGND
2020-02-10JAN2020-CHLOR_NFCND
2020-05-11MAY2020-CHLOR_NFC250.0 ppb
2020-05-11MAY2020-CHLOR_AVG250.0 ppb
2020-05-11MAY2020_CHLOR_MAX250.0 ppb
2020-08-03AUG2020_CHLOR_MAX80.0 ppb
2020-08-03AUG2020-CHLOR_AVG70.0 ppb
2020-08-03AUG2020-CHLOR_NFC130.0 ppb
2020-11-10NOV2020_CHLOR_MAX787.0 ppb
2020-11-10NOV2020-CHLOR_AVG1,060.0 ppb
2020-11-10NOV2020-CHLOR_NFC989.0 ppb
2021-02-24FEB2021-CHLOR_NFC590.0 ppb
2021-02-24FEB2021_CHLOR_MAX560.0 ppb
2021-02-24FEB2021-CHLOR_AVG560.0 ppb
2021-05-10MAY2021-CHLOR_NFC350.0 ppb
2021-05-10MAY2021-CHLOR_AVG470.0 ppb
2021-05-10MAY2021_CHLOR_MAX430.0 ppb
2021-10-05AUG2021-CHLOR_NFC400.0 ppb
2021-10-05AUG2021-CHLOR_AVG330.0 ppb
2021-10-05AUG2021_CHLOR_MAX280.0 ppb
2021-11-16NOV2021_CHLOR_NFC90.0 ppb
2021-11-16NOV2021-CHLOR_AVG160.0 ppb
2021-11-16NOV2021_CHLOR_MAX90.0 ppb
2022-02-14FEB2022_CHLOR_MAX390.0 ppb
2022-02-14FEB2022_CHLOR_NFC400.0 ppb
2022-02-14FEB2022-CHLOR_AVG380.0 ppb
2022-05-16MAY2022-CHLOR_AVG640.0 ppb
2022-05-16MAY2022_CHLOR_MAX340.0 ppb
2022-05-16MAY2022_CHLOR_NFC360.0 ppb
2022-08-22AUG2022_CHLOR_NFC940.0 ppb
2022-08-22AUG2022_CHLOR_MAX980.0 ppb
2022-08-22AUG2022-CHLOR_AVG940.0 ppb
2022-11-28NOV2022_CHLOR_MAX70.0 ppb
2022-11-28NOV2022-CHLOR_AVG70.0 ppb
2022-11-28NOV2022_CHLOR_NFC70.0 ppb
2023-02-28FEB2023_CHLOR_NFC360.0 ppb
2023-02-28FEB2023-CHLOR_AVG370.0 ppb
2023-02-28FEB2023_CHLOR_MAX410.0 ppb
2023-06-05JUN2023_CHLOR_MAX420.0 ppb
2023-06-05JUN2023-CHLOR_AVG290.0 ppb
2023-06-05JUN2023_CHLOR_NFC30.0 ppb
2023-09-11SEP2023_CHLOR_NFC420.0 ppb
2023-09-11SEP2023_CHLOR_MAX410.0 ppb
2023-09-11SEP2023-CHLOR_AVG390.0 ppb
2023-11-13NOV2023_CHLOR_MAX390.0 ppb
2023-11-13NOV2023-CHLOR_AVG300.0 ppb
2023-11-13NOV2023_CHLOR_NFC300.0 ppb