Know Your Environment. Protect Your Health.

Antimony

City of Nampa

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND50ND
2020N/A00N/A
2021ND30ND
2022ND50ND
2023ND10ND

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
2018-10-08I1850016ND
2018-10-08I1850026ND
2018-10-08I1850024ND
2018-10-08I1850023ND
2018-10-08I1850028ND
2018-10-08I1850109ND
2019-07-18I1935059ND
2019-07-18I1935058ND
2019-07-18I1935056ND
2019-07-18I1935089ND
2019-07-18I1935088ND
2021-03-08I2110611ND
2021-03-08I2110615ND
2021-11-09I2160871ND
2022-08-18I2240735ND
2022-10-21I2252720ND
2022-11-16I2256979ND
2022-11-16I2256980ND
2022-11-18I2256985ND
2023-08-15I2317348-01ND