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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Holden Water Division, DPW

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).

 

19

Samples

0

Samples exceeding legal limit (MCL)

19

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.143 ppb10100.0420 ppb - 0.660 ppb
20150.108 ppb990.0380 ppb - 0.440 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
2014-08-200.660 ppb
2014-08-200.0660 ppb
2014-08-200.0470 ppb
2014-08-200.0480 ppb
2014-08-200.0460 ppb
2014-08-200.330 ppb
2014-08-200.0850 ppb
2014-08-200.0520 ppb
2014-11-190.0570 ppb
2014-11-190.0420 ppb
2015-02-240.0530 ppb
2015-02-250.0470 ppb
2015-02-250.0450 ppb
2015-02-250.0380 ppb
2015-02-250.0400 ppb
2015-02-250.180 ppb
2015-02-250.440 ppb
2015-05-270.0760 ppb
2015-05-270.0570 ppb