Chromium (total)

City of Albemarle

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
2013	0.0667 ppb	12	3	ND - 0.300 ppb
2014	ND	2	0	ND
2015	ND	2	0	ND
2016	ND	2	0	ND
2017	ND	2	0	ND
2018	ND	2	0	ND
2019	ND	2	0	ND

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
2013-01-03	2760506	ND
2013-01-03	2760501	0.300 ppb
2013-01-03	2760521	ND
2013-04-08	2805758	ND
2013-04-08	2805753	ND
2013-04-08	2805745	0.300 ppb
2013-07-15	2858007	0.200 ppb
2013-07-15	2857998	ND
2013-07-15	2858104	ND
2013-10-02	2907291	ND
2013-10-02	2907125	ND
2013-10-02	2907084	ND
2014-09-25	8252-092514-TS5I	ND
2014-09-25	8252-092514-TW1I	ND
2015-09-03		ND
2015-09-03		ND
2016-09-08	8252-090816-TW1I	ND
2016-09-08	8252-090816-TS5I	ND
2017-09-13	8252-091317-TW1I	ND
2017-09-13	8252-091317-TS5I	ND
2018-09-06	8252-090618-TW1I	ND
2018-09-06	8252-090618-TS5I	ND
2019-09-12	8252-091219-TW1I	ND
2019-09-12	8252-091219-TS5I	ND