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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Skagit County Public Utility District 1 Judy Reservoir

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).

 

8

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.0960 ppb440.0780 ppb - 0.117 ppb
20150.140 ppb440.121 ppb - 0.170 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
2014-09-24WA97-SE1-14-19280.0780 ppb
2014-09-24WA97-SE1-14-19280.0900 ppb
2014-11-19WA97-SE2-14-23480.117 ppb
2014-11-19WA97-SE2-14-23480.0990 ppb
2015-02-02WA-97-SE3-15-0190.121 ppb
2015-02-03WA97-SE3-15-02060.129 ppb
2015-05-04WA97-SE4-15-08340.170 ppb
2015-05-04WA97-SE4-15-08340.140 ppb