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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Lehigh County Authority Allentown Division

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

 

12

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.719 ppb660.554 ppb - 0.906 ppb
20140.556 ppb660.390 ppb - 0.670 ppb
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) 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 cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2013-07-22732604-93650.854 ppb
2013-07-22732602-93650.567 ppb
2013-07-22732600-93650.630 ppb
2013-10-09751815-100200.906 ppb
2013-10-09751813-100110.554 ppb
2013-10-09751811-100110.801 ppb
2014-01-15766742-106040.662 ppb
2014-01-15766746-105910.669 ppb
2014-01-15766744-105910.443 ppb
2014-04-2214040706-020.670 ppb
2014-04-2214040706-030.500 ppb
2014-04-2214040706-010.390 ppb