Chromium (total)

Aqua Pa Hatboro

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	0.581 ppb	17	14	ND - 1.50 ppb
2015	2.75 ppb	8	8	0.310 ppb - 6.30 ppb
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	5.32 ppb	5	5	4.10 ppb - 6.70 ppb
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
2014-06-25	AE38137	0.450 ppb
2014-06-25	AE38125	ND
2014-06-25	AE38140	0.220 ppb
2014-06-25	AE38131	0.420 ppb
2014-06-25	AE38142	ND
2014-06-25	AE38134	0.330 ppb
2014-06-25	AE38128	ND
2014-06-25	AE38122	0.250 ppb
2014-09-25	AE50180	0.380 ppb
2014-09-25	AE50183	0.600 ppb
2014-12-17	AE60636	1.000 ppb
2014-12-17	AE60645	0.730 ppb
2014-12-17	AE60648	0.910 ppb
2014-12-17	AE60345	1.10 ppb
2014-12-17	AE60351	1.50 ppb
2014-12-17	AE60639	0.790 ppb
2014-12-17	AE60642	1.20 ppb
2015-02-18	12400750	2.80 ppb
2015-02-18	12400769	2.90 ppb
2015-02-18	12400762	3.00 ppb
2015-03-17	12514587	3.30 ppb
2015-03-18	AE68968	0.310 ppb
2015-03-18	AE68976	0.370 ppb
2015-08-04	13263933	6.30 ppb
2015-11-23	13632475	3.00 ppb
2018-01-16	AF73310	6.70 ppb
2018-01-16	AF73309	6.00 ppb
2018-01-16	AF73308	5.10 ppb
2018-03-14	AF77913	4.10 ppb
2018-03-14	AF77912	4.70 ppb