Know Your Environment. Protect Your Health.

Antimony

Regional Water Authority

Antimony is a naturally occurring metal that enters tap water from plumbing fittings and also from industrial uses, such as production of metal alloys, batteries and plastics. Antimony causes organ damage and shortens lifespans in studies of laboratory animals.

 

62

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND100ND
2019ND110ND
2020ND90ND
2021ND110ND
2022ND110ND
2023ND100ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1 ppb

The EWG Health Guideline of 1 ppb for antimony 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 to the stomach and intestines.

EPA Maximum Contaminant
Level (MCL): 6 ppb

The legal limit for antimony, established in 1992, was based on a toxicity study in laboratory animals published in 1970. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2018-03-12IOC1 200489766ND
2018-03-14IOC1 200489867ND
2018-03-14IOC1 200489870ND
2018-03-14IOC1 200489868ND
2018-03-14IOC1 200489884ND
2018-03-14IOC1 200489885ND
2018-03-14IOC1 200489871ND
2018-03-14IOC1 200489913ND
2018-03-14IOC1 200489914ND
2018-11-29IOC1 200514112ND
2019-03-18IOC1 200524895ND
2019-03-19IOC1 200525061ND
2019-03-19IOC1 200525098ND
2019-03-19IOC1 200525097ND
2019-03-19IOC1 200525078ND
2019-03-19IOC1 200525059ND
2019-03-19IOC1 200525057ND
2019-03-19IOC1 200525058ND
2019-03-19IOC1 200525060ND
2019-03-19IOC1 200525077ND
2019-05-08IOC1 200531297ND
2020-02-10IOC1 200565460ND
2020-02-11IOC1 200565593ND
2020-02-11IOC1 200565628ND
2020-02-11IOC1 200565628AND
2020-02-11IOC1 200565594ND
2020-02-11IOC1 200565625ND
2020-02-11IOC1 200565626ND
2020-02-11IOC1 200565627ND
2020-02-11IOC1 200565624ND
2021-02-09IOC1 200605933ND
2021-02-09IOC1 200606111ND
2021-02-09IOC1 200605959ND
2021-02-09IOC1 200606116ND
2021-02-09IOC1 200605888ND
2021-02-09IOC1 200605956ND
2021-02-09IOC1 200606109ND
2021-02-09IOC1 200606110ND
2021-02-09IOC1 200606114ND
2021-02-09IOC1 200605886ND
2021-02-17IOC1 200606909ND
2022-02-15E300145550 300145554ND
2022-02-15E300145718 300145722ND
2022-02-15E300145699 300145703ND
2022-02-15E300145575 300145579ND
2022-02-15E300145667 300145671ND
2022-02-15E300145647 300145651ND
2022-02-15E300146276 300146280ND
2022-02-15E300145514 300145518ND
2022-02-15E300145523 300145527ND
2022-02-15E300145532 300145536ND
2022-02-15E300145541 300145545ND
2023-02-06E300305466 300305496ND
2023-02-07E300305797 300305801ND
2023-02-14E300309461 300309465ND
2023-02-14E300309762 300309766ND
2023-02-14E300309452 300309456ND
2023-02-14E300309097 300309101ND
2023-02-14E300309470 300309474ND
2023-02-14E300309495 300309499ND
2023-02-14E300309531 300309535ND
2023-02-14E300309550 300309554ND