Know Your Environment. Protect Your Health.

Antimony

Marchi Central Farm

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.

 

15

Samples

5

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
20214.67 ppb32ND - 7.70 ppb
20222.00 ppb71ND - 14.0 ppb
20234.10 ppb52ND - 12.6 ppb

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
2021-02-17CA4100551_008_008-2021021707307.70 ppb
2021-09-14CA4100551_008_008-2021091408006.30 ppb
2021-11-03CA4100551_008_008-202111030800ND
2022-01-18CA4100551_008_008-202201180800ND
2022-03-02CA4100551_008_008-202203020745ND
2022-04-07CA4100551_008_008-202204070730ND
2022-06-28CA4100551_008_008-20220628080014.0 ppb
2022-08-03CA4100551_008_008-202208030740ND
2022-09-21CA4100551_008_008-202209210745ND
2022-11-15CA4100551_008_008-202211150800ND
2023-01-19CA4100551_008_008-202301190730ND
2023-07-13CA4100551_008_008-2023071307107.90 ppb
2023-08-16CA4100551_008_008-202308160800ND
2023-09-17CA4100551_008_008-202309170700ND
2023-12-12CA4100551_008_008-20231212120312.6 ppb