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EWG's Tap Water Database — 2021 UPDATE

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Antimony

Philadelphia Water Department

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND120ND
2015ND90ND
20160.1000 ppb31ND - 0.300 ppb
20170.233 ppb32ND - 0.400 ppb
2018ND30ND
20190.300 ppb32ND - 0.500 ppb

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
2014-01-07DW140107-003ND
2014-01-07DW140107-001ND
2014-01-07DW140107-002ND
2014-04-08DW140408-003ND
2014-04-08DW140408-002ND
2014-04-08DW140408-001ND
2014-07-08DW140708-004ND
2014-07-08DW14078-0022ND
2014-07-08DW14078-0014ND
2014-10-07DW141007-040ND
2014-10-07DW141007-013ND
2014-10-07DW141007-021ND
2015-01-0612292002ND
2015-01-0612292000ND
2015-01-0612292001ND
2015-04-0712637827ND
2015-04-0712637826ND
2015-04-0712637825ND
2015-10-0613394068ND
2015-10-0613394069ND
2015-10-0613394067ND
2016-10-0415082303ND
2016-10-0415082304ND
2016-10-04150823050.300 ppb
2017-10-0316886158ND
2017-10-03168861590.400 ppb
2017-10-03168861600.300 ppb
2018-10-16DW181016-041ND
2018-10-16DW181016-020ND
2018-10-16DW181016-011ND
2019-10-08DW191008-039ND
2019-10-08DW191008-0200.500 ppb
2019-10-08DW191008-0110.400 ppb