Chromium (hexavalent)

Weston Municipal Utilities

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	0.390 ppb	10	10	0.0750 ppb - 0.958 ppb
2015	0.422 ppb	10	10	0.119 ppb - 0.956 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
2014-08-21	812591-12155	0.320 ppb
2014-08-21	812587-12155	0.920 ppb
2014-08-21	812601-12155	0.289 ppb
2014-08-21	812597-12155	0.253 ppb
2014-08-21	812589-12155	0.958 ppb
2014-08-21	812593-12155	0.276 ppb
2014-08-21	812599-12155	0.0750 ppb
2014-08-21	812595-12155	0.236 ppb
2014-09-08	816386-12245	0.230 ppb
2014-09-08	816384-12245	0.347 ppb
2015-02-19	844543-13478	0.253 ppb
2015-02-19	844539-13478	0.248 ppb
2015-02-19	844555-13478	0.351 ppb
2015-02-19	844551-13478	0.119 ppb
2015-02-19	844553-13478	0.354 ppb
2015-02-19	844557-13478	0.346 ppb
2015-02-19	844549-13478	0.956 ppb
2015-02-19	844545-13478	0.270 ppb
2015-02-19	844541-13478	0.398 ppb
2015-02-19	844547-13478	0.924 ppb