Chromium (total)

Bell Arthur Water Corporation

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	Detections	Range of results
2014	0.0125 ppb	16	1	ND - 0.200 ppb
2015	N/A	0	0	N/A
2016	ND	5	0	ND
2017	ND	5	0	ND
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

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
2014-01-06	103754P	ND
2014-01-06	103755P	0.200 ppb
2014-01-06	103752P	ND
2014-01-08	303865P	ND
2014-01-08	103750P	ND
2014-01-08	103753P	ND
2014-04-09	306662P	ND
2014-04-09	106581Q	ND
2014-07-07	307934P	ND
2014-07-07	107821P	ND
2014-07-08	107824P	ND
2014-07-08	107822P	ND
2014-07-09	107825P	ND
2014-07-09	107823P	ND
2014-10-06	309355P	ND
2014-10-06	109435Q	ND
2016-08-29	8031-082916-E07I	ND
2016-09-28	8031-092816-E03I	ND
2016-09-28	8031-092816-E05I	ND
2016-09-28	8031-092816-E06I	ND
2016-09-28	8031-092816-E04I	ND
2017-06-26	8031-062617-E07I	ND
2017-06-26	8031-062617-E06I	ND
2017-06-26	8031-062617-E05I	ND
2017-06-26	8031-062617-E04I	ND
2017-06-26	8031-062617-E03I	ND