Chromium (hexavalent)

Gadsden County Regional WS

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	0.386 ppb	18	10	ND - 1.80 ppb
2014	0.449 ppb	18	9	ND - 1.80 ppb
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	Result
2013-10-07	ND
2013-10-07	0.0300 ppb
2013-10-07	ND
2013-10-07	0.0540 ppb
2013-10-09	0.860 ppb
2013-10-09	0.0490 ppb
2013-10-09	ND
2013-10-09	0.300 ppb
2013-10-09	1.80 ppb
2013-10-09	ND
2013-10-09	0.310 ppb
2013-10-09	1.70 ppb
2013-10-09	1.80 ppb
2013-10-14	ND
2013-10-14	ND
2013-10-14	ND
2013-10-14	0.0530 ppb
2013-10-14	ND
2014-04-02	0.790 ppb
2014-04-02	ND
2014-04-02	ND
2014-04-09	1.70 ppb
2014-04-09	ND
2014-04-09	1.80 ppb
2014-04-09	ND
2014-04-09	0.280 ppb
2014-04-09	0.0680 ppb
2014-04-09	1.70 ppb
2014-04-14	ND
2014-04-14	1.40 ppb
2014-04-14	ND
2014-04-15	ND
2014-04-15	ND
2014-04-15	0.0470 ppb
2014-04-15	ND
2014-04-15	0.290 ppb