Know Your Environment. Protect Your Health.

Antimony

Walnut Grove Utilities

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND60ND
2020N/A00N/A
2021ND20ND
2022ND80ND
2023ND80ND

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
2018-08-15292292-2018-DWIND
2018-10-16295670-2018-DWND
2019-02-26301436-2019-DWND
2019-02-26301437-2019-DWIND
2019-03-05301698-2019-DWND
2019-03-05301699-2019-DWIND
2019-03-12302100-2019-DWND
2019-03-12302099-2019-DWND
2021-07-217380944003ND
2021-09-077387721001ND
2022-03-08810-17505-1BND
2022-03-08810-17576-1BND
2022-03-08810-17508-1BND
2022-03-09FWC0111AND
2022-03-09810-18451-1BND
2022-03-09810-18448-1AND
2022-03-23810-18980-1IND
2022-05-23FWE0087-01ND
2023-02-15FXB0429ND
2023-04-04FXC0507-01ND
2023-04-04FXC0516-01ND
2023-04-05FXC0500-01ND
2023-04-05FXC0542-01ND
2023-04-05FXC0553-01ND
2023-04-05FXC0559-01ND
2023-07-31FXF0576-01ND