Chromium (hexavalent)

City of Sherman

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
2014	0.00492 ppb	26	4	ND - 0.0342 ppb
2015	ND	2	0	ND
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
2014-03-24	4D01044-03	ND
2014-03-24	4D01044-01	ND
2014-03-24	4D01044-05	ND
2014-03-24	4D01044-02	0.0316 ppb
2014-03-24	4D01044-04	ND
2014-03-31	4D08014-04	ND
2014-03-31	4D08014-03	ND
2014-03-31	4D08014-01	ND
2014-03-31	4D08014-02	ND
2014-04-22	4D29014-01	0.0342 ppb
2014-06-16	4F26018-02	ND
2014-06-16	4F26018-01	ND
2014-09-29	4J10003-05	ND
2014-09-29	4J10003-04	0.0306 ppb
2014-09-29	4J10003-02	ND
2014-09-29	4J10003-10	ND
2014-09-29	4J10003-03	ND
2014-09-29	4J10003-01	ND
2014-09-29	4J10003-08	ND
2014-09-29	4J10003-12	ND
2014-09-29	4J10003-11	ND
2014-09-29	4J10003-09	ND
2014-09-29	4J10003-06	ND
2014-09-29	4J10003-07	0.0314 ppb
2014-12-29	5A06009-01	ND
2014-12-29	5A06009-02	ND
2015-04-23	5D29025-02	ND
2015-04-23	5D29025-01	ND