Chromium (total)

East Milton Water System

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	0.300 ppb	12	11	ND - 0.630 ppb
2014	0.130 ppb	18	8	ND - 0.580 ppb
2015	N/A	0	0	N/A
2016	N/A	0	0	N/A
2017	ND	6	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	Result
2013-10-08	0.210 ppb
2013-10-08	0.320 ppb
2013-10-08	0.330 ppb
2013-10-08	0.240 ppb
2013-10-08	0.270 ppb
2013-10-08	ND
2013-10-08	0.230 ppb
2013-10-08	0.590 ppb
2013-10-08	0.300 ppb
2013-10-08	0.230 ppb
2013-10-08	0.630 ppb
2013-11-13	0.250 ppb
2014-04-16	0.310 ppb
2014-04-16	ND
2014-04-16	0.310 ppb
2014-04-16	0.210 ppb
2014-04-16	0.580 ppb
2014-04-16	0.220 ppb
2014-04-16	ND
2014-04-16	ND
2014-04-16	0.230 ppb
2014-04-16	ND
2014-04-16	0.240 ppb
2014-04-16	0.240 ppb
2014-06-03	ND
2014-06-03	ND
2014-06-03	ND
2014-06-03	ND
2014-06-03	ND
2014-06-03	ND
2017-06-26	ND
2017-06-26	ND
2017-06-26	ND
2017-06-26	ND
2017-06-26	ND
2017-06-26	ND