Chromium (total)

IL American - Pekin

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

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	0.738 ppb	8	8	0.200 ppb - 1.80 ppb
2014	0.675 ppb	8	6	ND - 1.20 ppb
2015	ND	7	0	ND
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	ND	9	0	ND
2019	N/A	0	0	N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date	Lab ID	Result
2013-07-10	22928501	1.20 ppb
2013-07-10	23110001	1.80 ppb
2013-07-10	22846401	0.500 ppb
2013-07-10	22847301	0.200 ppb
2013-07-10	22847201	0.300 ppb
2013-07-10	22847101	0.900 ppb
2013-07-17	22846301	0.700 ppb
2013-07-23	23217501	0.300 ppb
2014-01-06	24364301	0.800 ppb
2014-01-13	24364401	0.400 ppb
2014-01-13	24364501	1.10 ppb
2014-01-13	24364001	0.900 ppb
2014-01-13	24364801	ND
2014-01-13	24364901	ND
2014-01-13	24364601	1.20 ppb
2014-01-13	24364701	1.000 ppb
2015-04-20	28596101	ND
2015-07-20	29619801	ND
2015-07-20	29619601	ND
2015-07-20	29619401	ND
2015-07-20	29619001	ND
2015-07-20	29618801	ND
2015-07-20	29618501	ND
2018-04-02	39112601	ND
2018-07-02	40361201	ND
2018-07-02	40361001	ND
2018-07-02	40360801	ND
2018-07-02	40360401	ND
2018-07-02	40360201	ND
2018-07-02	40359901	ND
2018-10-30	18J0987-02_01	ND
2018-10-30	18J0987-01_01	ND