Chromium (total)

West Hwy 80 Ark Road WS

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.

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Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	20	ND
2015	N/A	0	N/A
2016	N/A	0	N/A
2017	ND	8	ND
2018	N/A	0	N/A
2019	N/A	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
2014-01-17	2960246	ND
2014-01-17	2960255	ND
2014-01-17	2960197	ND
2014-01-17	2960205	ND
2014-01-17	2960237	ND
2014-01-17	2960201	ND
2014-06-16	AD92392	ND
2014-06-16	AD92397	ND
2014-06-16	AD92392	ND
2014-06-16	AD92397	ND
2014-07-29	3071705	ND
2014-07-29	3071946	ND
2014-07-29	3071636	ND
2014-07-29	3071950	ND
2014-07-29	3071718	ND
2014-07-29	3071659	ND
2014-08-04	AD94913	ND
2014-08-04	AD94913	ND
2014-08-11	AD95302	ND
2014-08-11	AD95302	ND
2017-05-01	35310537002	ND
2017-05-01	35310537001	ND
2017-05-01	35310537002	ND
2017-05-01	35310537001	ND
2017-07-24	35326443005	ND
2017-07-24	35326443005	ND
2017-08-01	35327912005	ND
2017-08-01	35327912005	ND