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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

West Sound Utility District #1

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.729 ppb1814ND - 2.80 ppb
20150.439 ppb185ND - 2.40 ppb
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2014-09-22201409240534AMND
2014-09-22201409240416AM0.200 ppb
2014-09-22201409240412AM0.630 ppb
2014-09-22201409240418AM2.80 ppb
2014-09-22201409240477AMND
2014-09-22201409240400AM0.210 ppb
2014-09-23201409250525AM1.20 ppb
2014-09-23201409250638AMND
2014-09-23201409250596AM0.260 ppb
2014-09-23201409250515AMND
2014-09-24201409260273AM0.850 ppb
2014-09-24201409260302AM1.20 ppb
2014-09-24201409260300AM0.370 ppb
2014-09-24201409260275AM0.950 ppb
2014-09-24201409260313AM0.800 ppb
2014-09-24201409260271AM0.280 ppb
2014-09-24201409260268AM0.980 ppb
2014-09-24201409260328AM2.40 ppb
2015-03-16201503180809AM2.00 ppb
2015-03-16201503180707AMND
2015-03-16201503180471AMND
2015-03-16201503180580AMND
2015-03-16201503180569AMND
2015-03-16201503180434AMND
2015-03-16201503180741AMND
2015-03-16201503180807AMND
2015-03-17201503190660AM0.210 ppb
2015-03-17201503190658AMND
2015-03-17201503190483AM2.20 ppb
2015-03-17201503190607AMND
2015-03-17201503190512AMND
2015-03-17201503190566AMND
2015-03-18201503200132AMND
2015-03-18201503200142AMND
2015-03-18201503200243AM2.40 ppb
2015-03-18201503200254AM1.10 ppb