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EWG's Tap Water Database — 2021 UPDATE

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Antimony

Block Island Water Company

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
2014ND30ND
2015ND50ND
20160.250 ppb220.200 ppb - 0.300 ppb
2017ND40ND
2018ND40ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-04-091404248-01IND
2014-04-091404248-02IND
2014-09-101409222-01_IOCND
2015-05-131505347-02IND
2015-05-131505347-04IND
2015-05-131505347-03IND
2015-05-131505347-05IND
2015-05-131505347-06IND
2016-04-201604606-06I0.300 ppb
2016-04-201604606-05I0.200 ppb
2017-04-061704183-03IND
2017-04-061704183-04IND
2017-04-061704183-05IND
2017-06-271706736-01_IOCND
2018-04-111804353-01IND
2018-04-111804357-01IND
2018-04-111804350-01IND
2018-04-111804351-01IND
2019-04-101904-06459-002ND
2019-04-101904-06459-001ND