Chromium (hexavalent)

Southeast Morris County Municipal Utilities Authority

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

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
2014	N/A	0	0	N/A
2015	0.283 ppb	26	20	ND - 0.720 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

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date	Lab ID	Result
2015-03-17	3208253	0.390 ppb
2015-03-17	3208233	0.720 ppb
2015-03-18	3209314	ND
2015-03-19	3210352	0.250 ppb
2015-03-19	3210369	0.190 ppb
2015-03-24	3213474	0.380 ppb
2015-03-24	3213288	0.240 ppb
2015-03-25	3213967	0.250 ppb
2015-03-25	3213963	0.570 ppb
2015-03-26	3214791	0.650 ppb
2015-03-26	3214802	ND
2015-06-18	3265612	0.170 ppb
2015-06-18	3265663	ND
2015-09-08	3317080	0.250 ppb
2015-09-09	3317896	ND
2015-09-15	3322700	0.340 ppb
2015-09-16	3324135	0.560 ppb
2015-09-17	3325000	ND
2015-09-17	3325010	0.0500 ppb
2015-09-21	3326767	0.520 ppb
2015-09-22	3327753	0.270 ppb
2015-09-23	3328676	0.390 ppb
2015-09-29	3332175	0.720 ppb
2015-12-16	3376000	ND
2015-12-16	3376020	0.160 ppb
2015-12-16	3376010	0.280 ppb