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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Pennsylvania American Royersford

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND60ND
2013ND10ND
2014ND10ND
20150.391 ppb2215ND - 1.30 ppb
2016ND10ND
2017ND10ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2012-04-1017211501ND
2012-08-0718201301ND
2012-08-0718201601ND
2012-08-0718201701ND
2012-08-0718201801ND
2012-08-0718895301ND
2013-08-0823076901ND
2014-08-1226516801ND
2015-03-0428404001ND
2015-03-04284036010.500 ppb
2015-03-04284034010.600 ppb
2015-03-04284039010.500 ppb
2015-03-09284038010.300 ppb
2015-03-09284035010.300 ppb
2015-04-06289154010.300 ppb
2015-06-10290841010.600 ppb
2015-06-10290840011.20 ppb
2015-08-0613131549ND
2015-08-0613131562ND
2015-08-0613131589ND
2015-08-0613131576ND
2015-09-01301381010.700 ppb
2015-09-01301379011.30 ppb
2015-09-0130138501ND
2015-09-01301382010.300 ppb
2015-09-01301384010.400 ppb
2015-09-10301380010.700 ppb
2015-09-1613260292ND
2015-12-02307940010.400 ppb
2015-12-02307939010.500 ppb
2016-08-0414730034ND
2017-08-1516560903ND