Chromium (hexavalent)

City of Vancouver

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).

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	0.282 ppb	20	18	ND - 0.730 ppb
2014	N/A	0	0	N/A
2015	N/A	0	0	N/A
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	N/A	0	0	N/A
2019	N/A	0	0	N/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
2013-05-28	201305290223AM	0.290 ppb
2013-05-28	201305290241AM	0.340 ppb
2013-05-28	201305290221AM	0.670 ppb
2013-05-28	201305290217AM	0.640 ppb
2013-05-28	201305290260AM	0.110 ppb
2013-05-28	201305290215AM	0.150 ppb
2013-05-28	201305290239AM	ND
2013-05-28	201305290255AM	0.140 ppb
2013-05-28	201305290226AM	0.140 ppb
2013-06-17	201306180198AM	0.130 ppb
2013-11-19	201311200365AM	0.280 ppb
2013-11-19	201311200397AM	ND
2013-11-19	201311200401AM	0.0920 ppb
2013-11-19	201311200327AM	0.610 ppb
2013-11-19	201311200527AM	0.150 ppb
2013-11-19	201311200341AM	0.690 ppb
2013-11-19	201311200323AM	0.730 ppb
2013-11-19	201311200369AM	0.0580 ppb
2013-11-19	201311200343AM	0.120 ppb
2013-11-19	201311200325AM	0.290 ppb