Chromium (hexavalent)

Weymouth Water Department

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	0.0856 ppb	8	8	0.0520 ppb - 0.140 ppb
2015	0.0752 ppb	24	23	ND - 0.180 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	Result
2014-10-27	0.0570 ppb
2014-10-27	0.0960 ppb
2014-10-27	0.0760 ppb
2014-10-27	0.0980 ppb
2014-10-27	0.0520 ppb
2014-10-27	0.0760 ppb
2014-10-27	0.0900 ppb
2014-10-27	0.140 ppb
2015-01-26	0.0490 ppb
2015-01-26	0.0360 ppb
2015-01-26	0.0630 ppb
2015-01-26	0.0540 ppb
2015-01-26	0.0460 ppb
2015-01-26	0.130 ppb
2015-01-26	0.0560 ppb
2015-01-26	ND
2015-04-13	0.0590 ppb
2015-04-13	0.0720 ppb
2015-04-13	0.0360 ppb
2015-04-13	0.0380 ppb
2015-04-13	0.0510 ppb
2015-04-13	0.0700 ppb
2015-04-13	0.0660 ppb
2015-04-13	0.110 ppb
2015-07-27	0.0840 ppb
2015-07-27	0.120 ppb
2015-07-27	0.0730 ppb
2015-07-27	0.110 ppb
2015-07-27	0.110 ppb
2015-07-27	0.110 ppb
2015-07-27	0.180 ppb
2015-10-20	0.0820 ppb