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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

North Penn Water Authority

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).

 

50

Samples

0

Samples exceeding legal limit (MCL)

38

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
20150.0994 ppb5038ND - 1.20 ppb
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
2015-01-133170100ND
2015-01-133170074ND
2015-01-1331701340.0500 ppb
2015-01-1331701560.0700 ppb
2015-01-1331700640.0700 ppb
2015-01-1331700370.130 ppb
2015-01-1331701820.160 ppb
2015-01-133170218ND
2015-01-1331702090.0800 ppb
2015-01-1331700180.0400 ppb
2015-01-1331700090.660 ppb
2015-01-1331701960.0400 ppb
2015-01-1331702440.0600 ppb
2015-01-1331700830.0700 ppb
2015-01-1331701900.150 ppb
2015-01-1331699980.0800 ppb
2015-01-1331700280.110 ppb
2015-01-1331701450.0800 ppb
2015-01-133170227ND
2015-01-133170112ND
2015-01-1331702040.0900 ppb
2015-01-1331700540.0700 ppb
2015-01-133170236ND
2015-04-0832209530.0700 ppb
2015-04-0832209240.110 ppb
2015-07-143282238ND
2015-07-1432821540.120 ppb
2015-07-143282123ND
2015-07-1432820990.0700 ppb
2015-07-1432820950.0700 ppb
2015-07-143282222ND
2015-07-143282245ND
2015-07-1432821370.0900 ppb
2015-07-1432821860.110 ppb
2015-07-1432821950.0400 ppb
2015-07-1432821150.130 ppb
2015-07-1432821110.0800 ppb
2015-07-143282231ND
2015-07-1432821280.0400 ppb
2015-07-1432821460.0700 ppb
2015-07-1432822040.120 ppb
2015-07-1432821680.1000 ppb
2015-07-1432821590.0600 ppb
2015-07-1432822130.0600 ppb
2015-07-1432821770.1000 ppb
2015-07-1432821030.0800 ppb
2015-07-1432821191.20 ppb
2015-07-1432821070.120 ppb
2015-10-0733368960.120 ppb
2015-10-073336888ND