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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Logan City Water System

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
2013N/A00N/A
20140.378 ppb660.131 ppb - 1.06 ppb
20150.403 ppb660.174 ppb - 1.08 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 Result
2014-11-120.437 ppb
2014-11-120.178 ppb
2014-11-120.131 ppb
2014-11-120.318 ppb
2014-11-120.144 ppb
2014-11-121.06 ppb
2015-05-200.436 ppb
2015-05-200.223 ppb
2015-05-200.245 ppb
2015-05-200.260 ppb
2015-05-200.174 ppb
2015-05-201.08 ppb