Know Your Environment. Protect Your Health.

Chlorite

City of Rio Hondo

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.

 

181

Samples

0

Samples exceeding legal limit (MCL)

146

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018428.3 ppb1212150.0 ppb - 840.0 ppb
2019448.6 ppb333378.0 ppb - 990.0 ppb
2020322.2 ppb303038.0 ppb - 650.0 ppb
2021318.8 ppb363621.0 ppb - 830.0 ppb
2022186.8 ppb3628ND - 545.0 ppb
202398.6 ppb3416ND - 689.0 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
2018-08-23680-157103-1400.0 ppb
2018-08-23680-157103-2300.0 ppb
2018-08-23680-157103-3210.0 ppb
2018-10-10680-159085-1380.0 ppb
2018-10-10680-159085-2150.0 ppb
2018-10-10680-159085-3220.0 ppb
2018-11-13680-160731-1840.0 ppb
2018-11-13680-160731-2290.0 ppb
2018-11-13680-160731-3600.0 ppb
2018-12-12680-162061-1690.0 ppb
2018-12-12680-162061-2600.0 ppb
2018-12-12680-162061-3460.0 ppb
2019-01-22680-163602-1400.0 ppb
2019-01-22680-163602-2320.0 ppb
2019-01-22680-163602-378.0 ppb
2019-02-25680-164977-1590.0 ppb
2019-02-25680-164977-2550.0 ppb
2019-02-25680-164977-3270.0 ppb
2019-03-11680-165798-1720.0 ppb
2019-03-11680-165798-2740.0 ppb
2019-03-11680-165798-3220.0 ppb
2019-04-11680-167516-1710.0 ppb
2019-04-11680-167516-2640.0 ppb
2019-04-11680-167516-3420.0 ppb
2019-05-16680-169168-1530.0 ppb
2019-05-16680-169168-2360.0 ppb
2019-05-16680-169168-3420.0 ppb
2019-06-13680-170387-1620.0 ppb
2019-06-13680-170387-2600.0 ppb
2019-06-13680-170387-3230.0 ppb
2019-07-25680-172192-1490.0 ppb
2019-07-25680-172192-2460.0 ppb
2019-07-25680-172192-3280.0 ppb
2019-08-14680-172989-1990.0 ppb
2019-08-14680-172989-2770.0 ppb
2019-08-14680-172989-3580.0 ppb
2019-09-12680-174075-1350.0 ppb
2019-09-12680-174075-2320.0 ppb
2019-09-12680-174075-396.0 ppb
2019-11-18680-177082-1470.0 ppb
2019-11-18680-177082-2500.0 ppb
2019-11-18680-177082-391.0 ppb
2019-12-12680-178189-1440.0 ppb
2019-12-12680-178189-2410.0 ppb
2019-12-12680-178189-3140.0 ppb
2020-01-08680-179066-1440.0 ppb
2020-01-08680-179066-2460.0 ppb
2020-01-08680-179066-3130.0 ppb
2020-02-13680-180386-1500.0 ppb
2020-02-13680-180386-2490.0 ppb
2020-02-13680-180386-3180.0 ppb
2020-03-16680-181633-1650.0 ppb
2020-03-16680-181633-2580.0 ppb
2020-03-16680-181633-3260.0 ppb
2020-04-08680-182634-1350.0 ppb
2020-04-08680-182634-2370.0 ppb
2020-04-08680-182634-3130.0 ppb
2020-05-13680-183843-1260.0 ppb
2020-05-13680-183843-2260.0 ppb
2020-05-13680-183843-351.0 ppb
2020-06-15680-185169-1600.0 ppb
2020-06-15680-185169-2530.0 ppb
2020-06-15680-185169-3120.0 ppb
2020-07-21680-186612-1480.0 ppb
2020-07-21680-186612-2380.0 ppb
2020-07-21680-186612-388.0 ppb
2020-08-24680-187849-1430.0 ppb
2020-08-24680-187849-2390.0 ppb
2020-08-24680-187849-338.0 ppb
2020-09-23680-189119-1280.0 ppb
2020-09-23680-189119-2300.0 ppb
2020-09-23680-189119-383.0 ppb
2020-11-18680-191755-1358.0 ppb
2020-11-18680-191755-2334.0 ppb
2020-11-18680-191755-3145.0 ppb
2021-01-19680-194120-1830.0 ppb
2021-01-19680-194120-2770.0 ppb
2021-01-19680-194120-3240.0 ppb
2021-02-261965322491.0 ppb
2021-02-261965323499.0 ppb
2021-02-261965324161.0 ppb
2021-03-151970679350.0 ppb
2021-03-151970680404.0 ppb
2021-03-151970681126.0 ppb
2021-04-191979800573.0 ppb
2021-04-191979801485.0 ppb
2021-04-191979802145.0 ppb
2021-05-101985994565.0 ppb
2021-05-101985995382.0 ppb
2021-05-101985996159.0 ppb
2021-06-141995854326.0 ppb
2021-06-141995855372.0 ppb
2021-06-14199585680.1 ppb
2021-07-122004399211.0 ppb
2021-07-122004401263.0 ppb
2021-07-12200440297.3 ppb
2021-08-092012451110.0 ppb
2021-08-092012452138.0 ppb
2021-08-09201245321.0 ppb
2021-09-152023641401.0 ppb
2021-09-152023642473.0 ppb
2021-09-152023643100.0 ppb
2021-10-072030811351.0 ppb
2021-10-072030812385.0 ppb
2021-10-07203081322.3 ppb
2021-11-082038980409.0 ppb
2021-11-082038981528.0 ppb
2021-11-08203898239.5 ppb
2021-12-132049250454.0 ppb
2021-12-132049252443.0 ppb
2021-12-13204925373.0 ppb
2022-01-102055378469.0 ppb
2022-01-102055379545.0 ppb
2022-01-10205538070.6 ppb
2022-02-142066275513.0 ppb
2022-02-142066276412.0 ppb
2022-02-14206627779.9 ppb
2022-03-112073429436.0 ppb
2022-03-112073430499.0 ppb
2022-03-11207343127.8 ppb
2022-04-182083619420.0 ppb
2022-04-182083620401.0 ppb
2022-04-18208362195.5 ppb
2022-05-132091506147.0 ppb
2022-05-132091507180.0 ppb
2022-05-132091508113.0 ppb
2022-06-01209598059.9 ppb
2022-06-012095982120.0 ppb
2022-06-012095983ND
2022-07-122107741339.0 ppb
2022-07-122107742374.0 ppb
2022-07-12210774322.0 ppb
2022-08-10211610520.6 ppb
2022-08-10211610658.2 ppb
2022-08-102116107ND
2022-09-122125016ND
2022-09-122125017ND
2022-09-122125018ND
2022-10-192137621308.0 ppb
2022-10-192137622181.0 ppb
2022-10-192137623ND
2022-11-082143793137.0 ppb
2022-11-082143794152.0 ppb
2022-11-082143795ND
2022-12-062150584251.0 ppb
2022-12-062150585294.0 ppb
2022-12-062150586ND
2023-01-192163135372.0 ppb
2023-01-192163136387.0 ppb
2023-01-192163137138.0 ppb
2023-02-162171322689.0 ppb
2023-02-162171323666.0 ppb
2023-02-16217132479.5 ppb
2023-03-16218010078.2 ppb
2023-03-162180101ND
2023-03-162180102ND
2023-04-142189133131.0 ppb
2023-04-142189134130.0 ppb
2023-04-142189135ND
2023-05-152196946ND
2023-05-152196948ND
2023-05-152196949ND
2023-06-12220485511.3 ppb
2023-06-12220485656.7 ppb
2023-06-122204857ND
2023-07-172215068ND
2023-07-172215069ND
2023-07-172215070ND
2023-08-162224031ND
2023-08-162224036ND
2023-08-162224037ND
2023-09-11222ND
2023-10-162241432ND
2023-10-162241433ND
2023-10-162241434109.0 ppb
2023-11-162247510195.0 ppb
2023-11-162247511111.0 ppb
2023-11-162247512ND
2023-12-182258869186.0 ppb
2023-12-18225887011.7 ppb
2023-12-182258871ND