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EWG's Tap Water Database

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Molybdenum

Portland Water Bureau

Molybdenum is a metal that occurs naturally in soil, minerals and water. People who ingest large amounts can have increased levels of uric acid and gout-like symptoms.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
2012N/A00N/A
2013N/A00N/A
2014ND90ND
2015ND10ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 40 ppb

The health guideline of 40 ppb for molybdenum was defined by the Environmental Protection Agency as a lifetime health-based limit for effects other than cancer. This health guideline protects against an increased risk of gout.

ppb = parts per billion.

All test results

Date Lab ID Result
2014-03-19201403200340AMND
2014-03-19201403200265AMND
2014-06-26201406270434AMND
2014-06-26201406270313AMND
2014-07-08201407090732AMND
2014-09-11201409120957AMND
2014-09-11201409120826AMND
2014-12-10201412110822AMND
2014-12-10201412110612AMND
2015-06-17201506180496AMND