Chromium (total)

Pa-american Water- Uniontown

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
2014	0.339 ppb	18	7	ND - 3.80 ppb
2015	0.317 ppb	6	6	0.300 ppb - 0.400 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
2014-04-09	25355401	ND
2014-04-09	25355501	ND
2014-04-09	25355601	ND
2014-04-09	25355301	ND
2014-04-09	25355101	ND
2014-04-09	25355201	ND
2014-07-14	26128801	0.500 ppb
2014-07-14	26128701	ND
2014-07-14	26128601	0.300 ppb
2014-07-14	26128401	0.300 ppb
2014-07-14	26128501	3.80 ppb
2014-07-14	26128901	ND
2014-10-08	27114101	0.300 ppb
2014-10-08	27114001	ND
2014-10-08	27113801	ND
2014-10-08	27113701	ND
2014-10-08	27114201	0.300 ppb
2014-10-08	27113901	0.600 ppb
2015-01-14	27900001	0.300 ppb
2015-01-14	27900201	0.400 ppb
2015-01-14	27899901	0.300 ppb
2015-01-14	27899801	0.300 ppb
2015-01-14	27899701	0.300 ppb
2015-01-14	27900101	0.300 ppb