Chromium (total)

South Huntington Water Department

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	0.566 ppb	7	5	ND - 2.60 ppb
2014	0.756 ppb	9	6	ND - 2.60 ppb
2015	0.393 ppb	8	6	ND - 0.800 ppb
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
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
2013-11-18	201311190210AM	0.200 ppb
2013-11-18	201311190212AM	0.300 ppb
2013-11-19	201311210970AM	2.60 ppb
2013-11-19	201311220114AM	0.360 ppb
2013-11-19	201311220116AM	ND
2013-11-20	201311210960AM	0.500 ppb
2013-11-20	201311210962AM	ND
2014-04-15	35134479001AM	ND
2014-05-12	35138413003AM	2.60 ppb
2014-05-12	35138413005AM	1.60 ppb
2014-05-12	35138413001AM	0.300 ppb
2014-05-14	35138413011AM	0.510 ppb
2014-05-14	35138413009AM	1.000 ppb
2014-05-14	35138413007AM	ND
2014-05-16	35138768005AM	0.790 ppb
2014-10-27	35161424001AAM	ND
2015-01-23	35173213001AM	ND
2015-01-23	35173213003AM	0.530 ppb
2015-01-26	35173213005AM	0.410 ppb
2015-04-23	35185521001AM	0.800 ppb
2015-07-27	35200781001AM	ND
2015-07-27	35200783003AM	0.290 ppb
2015-07-27	35200783001AM	0.360 ppb
2015-10-21	35213424001AM	0.750 ppb