Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Chromium (hexavalent)

City of Redmond Water System

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).

 

18

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.0974 ppb1413ND - 0.160 ppb
20150.104 ppb440.0640 ppb - 0.150 ppb
2016N/A00N/A
2017N/A00N/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
2014-06-25A4E1998-21A0.0480 ppb
2014-06-25A4E1998-28A0.150 ppb
2014-06-25A4E1998-01A0.110 ppb
2014-06-25A4E1998-26A0.0700 ppb
2014-06-25A4E1998-16A0.160 ppb
2014-06-25A4E1998-11A0.0870 ppb
2014-09-24A4H1630-06A0.0580 ppb
2014-09-24A4H1630-01AND
2014-12-17A4K1345-06A0.110 ppb
2014-12-17A4K1345-01A0.120 ppb
2014-12-17A4K1348-06A0.0810 ppb
2014-12-17A4K1345-16A0.120 ppb
2014-12-17A4K1345-11A0.160 ppb
2014-12-17A4K1348-01A0.0900 ppb
2015-03-04A5B1435-01A0.0640 ppb
2015-03-04A5B1435-06A0.0910 ppb
2015-08-18A5G2132-01A0.150 ppb
2015-12-15A5K1615-01A0.110 ppb