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EWG's Tap Water Database — 2021 UPDATE

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Molybdenum

California Water Service (CWS) - Los Altos Suburban

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.

MORE ABOUT THIS CONTAMINANT

 

58

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.870 ppb4628ND - 4.50 ppb
20141.07 ppb32ND - 2.00 ppb
2015N/A00N/A
20161.69 ppb221.61 ppb - 1.76 ppb
20171.78 ppb331.64 ppb - 1.93 ppb
20181.69 ppb331.46 ppb - 1.81 ppb
20191.72 ppb111.72 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 40 ppb

The EWG Health Guideline of 40 ppb for molybdenum was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against metabolic changes and excess formation of uric acid in the blood.

ppb = parts per billion

All test results

Date Lab ID Result
2013-06-04201306060103AMND
2013-06-04201306060116AM1.10 ppb
2013-06-04201306060239AMND
2013-06-05201306060245AM1.10 ppb
2013-06-05201306060218AMND
2013-06-05201306060173AM1.10 ppb
2013-06-10201306110203AM1.60 ppb
2013-06-10201306110154AM2.00 ppb
2013-06-10201306110408AMND
2013-06-10201306110394AM1.10 ppb
2013-06-10201306110143AMND
2013-06-10201306110110AMND
2013-06-10201306110200AM1.000 ppb
2013-06-10201306110089AM1.20 ppb
2013-06-12201306130096AMND
2013-06-13201306140058AM1.70 ppb
2013-06-13201306140055AM1.30 ppb
2013-06-13201306140050AM1.30 ppb
2013-06-18201306190307AM2.60 ppb
2013-06-18201306190264AMND
2013-06-18201306190286AM4.50 ppb
2013-09-11201309120305AM1.20 ppb
2013-09-11201309120299AM1.20 ppb
2013-12-03201312040580AM1.20 ppb
2013-12-03201312040589AM1.40 ppb
2013-12-03201312040563AM1.000 ppb
2013-12-03201312040597AMND
2013-12-03201312040604AM1.000 ppb
2013-12-04201312050166AM1.10 ppb
2013-12-05201312060284AM1.30 ppb
2013-12-09201312100211AMND
2013-12-09201312100232AMND
2013-12-09201312100222AM1.10 ppb
2013-12-09201312100255AM1.10 ppb
2013-12-09201312100194AMND
2013-12-10201312110716AMND
2013-12-10201312110681AMND
2013-12-11201312120623AM1.10 ppb
2013-12-16201312170405AM1.40 ppb
2013-12-16201312170438AM1.40 ppb
2013-12-16201312170409AM1.40 ppb
2013-12-16201312170374AMND
2013-12-16201312170384AMND
2013-12-17201312180736AMND
2013-12-17201312180646AMND
2013-12-18201312200053AM1.50 ppb
2014-03-05201403060204AM2.00 ppb
2014-03-05201403060232AM1.20 ppb
2014-06-04201406050006AMND
2016-09-075701-032-13411.61 ppb
2016-12-055701-032-13111.76 ppb
2017-06-075701-032-13001.64 ppb
2017-09-125701-032-12331.93 ppb
2017-12-065701-032-12261.77 ppb
2018-03-205701-032-13401.81 ppb
2018-09-185701-032-13151.46 ppb
2018-12-055701-032-16101.80 ppb
2019-03-055701-032-12231.72 ppb