Know Your Environment. Protect Your Health.

Antimony

San Joaquin County-mokelumne Acres

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND30ND
2020ND20ND
2021N/A00N/A
2022ND30ND
2023ND20ND

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
2019-12-09CA3910017_009_009-201912091110ND
2019-12-09CA3910017_007_007-201912091040ND
2019-12-09CA3910017_008_008-201912091145ND
2020-07-15CA3910017_003_003-202007151015ND
2020-07-15CA3910017_006_006-202007151055ND
2022-12-13CA3910017_007_007-202212131135ND
2022-12-13CA3910017_009_009-202212131030ND
2022-12-13CA3910017_008_008-202212131210ND
2023-07-20CA3910017_003_003-202307201240ND
2023-07-20CA3910017_006_006-202307201215ND