Chromium (total)

Goforth SUD

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	0.0944 ppb	22	7	ND - 0.644 ppb
2014	ND	2	0	ND
2015	N/A	0	0	N/A
2016	ND	2	0	ND
2017	ND	2	0	ND
2018	N/A	0	0	N/A
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
2013-04-16	1304553-007A	ND
2013-04-16	1304553-011A	0.230 ppb
2013-04-16	1304553-015A	0.240 ppb
2013-04-16	1304553-013A	ND
2013-04-16	1304553-001A	ND
2013-04-16	1304553-005A	0.240 ppb
2013-04-16	1304553-003A	ND
2013-04-16	1304553-017A	ND
2013-04-16	1304553-009A	ND
2013-04-16	1304553-019A	0.200 ppb
2013-07-17	Q1303842003	ND
2013-07-17	Q1303842001	0.301 ppb
2013-10-16	Q1308913009	0.222 ppb
2013-10-16	Q1308913003	0.644 ppb
2013-10-16	Q1308913017	ND
2013-10-16	Q1308913011	ND
2013-10-16	Q1308913001	ND
2013-10-16	Q1308913019	ND
2013-10-16	Q1308913015	ND
2013-10-16	Q1308913013	ND
2013-10-16	Q1308913007	ND
2013-10-16	Q1308913005	ND
2014-01-22	Q1401700001	ND
2014-01-22	Q1401700003	ND
2016-06-15	AD40683	ND
2016-11-14	AD57675	ND
2017-02-21	AD71209	ND
2017-04-20	AD80306	ND
2019-05-09	AE65601	ND
2019-05-09	AE65602	ND