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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Northwestern W and Sd-wtln 200

NOTE: Northwestern W and Sd-wtln 200 purchases water from Oregon City which is required to test for chromium (hexavalent). Sample information shown below was taken by Oregon City.

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
20140.167 ppb660.140 ppb - 0.180 ppb
20150.175 ppb220.170 ppb - 0.180 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

NOTE: Northwestern W and Sd-wtln 200 purchases water from Oregon City which is required to test for chromium (hexavalent). Sample information shown below was taken by Oregon City.

Date Lab ID Result
2014-04-14M14-14598-030.140 ppb
2014-04-16M14-14598-010.140 ppb
2014-07-15M14-19353-010.180 ppb
2014-07-15M14-19353-030.180 ppb
2014-10-13M14-24174-030.180 ppb
2014-10-27M14-24904-010.180 ppb
2015-01-16M15-10794-010.170 ppb
2015-01-16M15-10794-030.180 ppb