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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

West Sound Utility District #1

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).

 

36

Samples

0

Samples exceeding legal limit (MCL)

19

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.583 ppb1811ND - 2.60 ppb
20150.418 ppb188ND - 2.20 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
2014-09-22201409240534AMND
2014-09-22201409240416AMND
2014-09-22201409240418AM2.60 ppb
2014-09-22201409240412AM0.480 ppb
2014-09-22201409240400AMND
2014-09-22201409240477AMND
2014-09-23201409250525AM1.000 ppb
2014-09-23201409250515AMND
2014-09-23201409250596AMND
2014-09-23201409250638AMND
2014-09-24201409260328AM2.10 ppb
2014-09-24201409260313AM0.840 ppb
2014-09-24201409260302AM0.980 ppb
2014-09-24201409260275AM0.720 ppb
2014-09-24201409260300AM0.260 ppb
2014-09-24201409260271AM0.0660 ppb
2014-09-24201409260268AM0.830 ppb
2014-09-24201409260273AM0.620 ppb
2015-03-16201503180471AMND
2015-03-16201503180707AMND
2015-03-16201503180807AMND
2015-03-16201503180809AM2.00 ppb
2015-03-16201503180434AMND
2015-03-16201503180580AM0.0710 ppb
2015-03-16201503180569AM0.0630 ppb
2015-03-16201503180741AMND
2015-03-17201503190658AMND
2015-03-17201503190483AM2.20 ppb
2015-03-17201503190660AM0.140 ppb
2015-03-17201503190512AMND
2015-03-17201503190566AMND
2015-03-17201503190607AMND
2015-03-18201503200132AMND
2015-03-18201503200142AM0.0560 ppb
2015-03-18201503200254AM0.900 ppb
2015-03-18201503200243AM2.10 ppb