Chromium (hexavalent)

Southington 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	N/A	0	0	N/A
2015	0.614 ppb	24	24	0.320 ppb - 1.10 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
2015-05-05	35187584003AM	0.800 ppb
2015-05-05	35187584005AM	0.530 ppb
2015-05-05	35187584008AM	0.580 ppb
2015-05-05	35187584006AM	0.660 ppb
2015-05-05	35187584004AM	0.600 ppb
2015-05-05	35187584001AM	0.490 ppb
2015-05-05	35187584002AM	0.670 ppb
2015-05-06	35187586003AM	0.700 ppb
2015-05-06	35187586002AM	0.530 ppb
2015-05-06	35187586001AM	1.10 ppb
2015-06-10	35193406001AM	0.550 ppb
2015-06-25	35195588003AM	0.410 ppb
2015-06-25	35195588001AM	0.320 ppb
2015-09-23	35209466009AM	0.680 ppb
2015-09-23	35209466003AM	0.640 ppb
2015-09-23	35209466005AM	0.870 ppb
2015-09-23	35209466001AM	0.470 ppb
2015-09-23	35209466013AM	0.510 ppb
2015-09-23	35209466011AM	0.690 ppb
2015-09-23	35209466007AM	0.450 ppb
2015-09-24	35209566001AM	0.650 ppb
2015-09-24	35209566005AM	0.680 ppb
2015-09-24	35209566003AM	0.580 ppb
2015-09-24	35209566007AM	0.580 ppb