Chromium (total)

Oneonta Utilities Board

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	0.460 ppb	14	13	ND - 0.820 ppb
2014	ND	3	0	ND
2015	2.33 ppb	3	3	2.00 ppb - 3.00 ppb
2016	2.00 ppb	1	1	2.00 ppb
2017	ND	1	0	ND
2018	ND	3	0	ND
2019	ND	1	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
2013-05-07	3592466003AM	0.370 ppb
2013-05-07	3592466005AM	ND
2013-05-07	3592466007AM	0.270 ppb
2013-05-07	3592466009AM	0.640 ppb
2013-05-07	3592466011AM	0.670 ppb
2013-05-07	3592466001AM	0.360 ppb
2013-08-12	35103922003AM	0.460 ppb
2013-08-12	35103922001AM	0.540 ppb
2013-11-04	35114508001AM	0.240 ppb
2013-11-04	35114508003AM	0.480 ppb
2013-11-04	35114508008AM	0.520 ppb
2013-11-04	35114508010AM	0.820 ppb
2013-11-04	35114508005AM	0.750 ppb
2013-11-04	35114508007AM	0.320 ppb
2014-02-03	35124804001AM	ND
2014-02-03	35124804003AM	ND
2014-03-10	1303-00129-2	ND
2015-03-09	1503-00142-2	3.00 ppb
2015-03-09	1503-00142-3	2.00 ppb
2015-03-09	1503-00142-4	2.00 ppb
2016-03-14	160300198-3	2.00 ppb
2017-03-13	1703-00176-004	ND
2018-03-13	180300160-2	ND
2018-03-13	180300160-5	ND
2018-03-13	180300160-8	ND
2019-03-11	1903-00170-001	ND