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EWG's Tap Water Database — 2021 UPDATE

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Molybdenum

Santa Clara Valley Water District

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

 

95

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.42 ppb1512ND - 2.60 ppb
20151.01 ppb2112ND - 2.50 ppb
20161.35 ppb118ND - 2.90 ppb
20170.300 ppb123ND - 1.20 ppb
20180.700 ppb1810ND - 1.60 ppb
20190.450 ppb186ND - 2.10 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
2014-02-112400-011-08151.50 ppb
2014-02-112400-005-09202.60 ppb
2014-02-112400-007-10152.60 ppb
2014-05-202400-011-09451.80 ppb
2014-05-202400-007-10591.80 ppb
2014-05-202400-005-12021.90 ppb
2014-08-122400-011-09011.40 ppb
2014-08-122400-007-10101.70 ppb
2014-08-122400-005-10211.80 ppb
2014-11-042400-007-09161.40 ppb
2014-11-122400-023-0949ND
2014-11-122400-022-1030ND
2014-11-122400-024-1103ND
2014-12-022400-011-09261.50 ppb
2014-12-022400-005-10361.30 ppb
2015-02-232400-024-1240ND
2015-02-232400-023-1100ND
2015-02-232400-022-1200ND
2015-02-242400-011-08351.20 ppb
2015-02-242400-007-10082.10 ppb
2015-02-242400-005-09502.10 ppb
2015-05-182400-024-0920ND
2015-05-182400-023-0855ND
2015-05-182400-022-0950ND
2015-05-192400-011-08181.80 ppb
2015-05-192400-005-09352.10 ppb
2015-05-192400-007-09282.00 ppb
2015-08-182400-005-09562.50 ppb
2015-08-182400-022-1030ND
2015-08-182400-024-0930ND
2015-08-182400-007-10451.80 ppb
2015-08-182400-011-08351.10 ppb
2015-09-212400-023-1105ND
2015-11-172400-005-09541.50 ppb
2015-11-172400-011-08161.50 ppb
2015-11-172400-007-08441.50 ppb
2016-02-232400-011-08002.00 ppb
2016-02-232400-005-09302.10 ppb
2016-02-232400-007-09322.90 ppb
2016-05-172400-011-08132.00 ppb
2016-05-172400-005-09371.90 ppb
2016-05-172400-007-0939ND
2016-08-162400-007-1035ND
2016-08-162400-011-08101.50 ppb
2016-08-162400-005-0923ND
2016-11-152400-011-07581.20 ppb
2016-11-152400-007-09221.20 ppb
2017-02-212400-011-08271.20 ppb
2017-02-212400-007-09531.20 ppb
2017-05-162400-011-0845ND
2017-05-162400-007-0950ND
2017-05-172400-023-1023ND
2017-05-172400-024-1048ND
2017-05-172400-022-1117ND
2017-08-222400-005-1140ND
2017-08-222400-007-1038ND
2017-08-222400-011-09431.20 ppb
2017-11-142400-007-0734ND
2017-11-142400-005-0900ND
2018-02-202400-005-09581.60 ppb
2018-02-202400-007-08451.60 ppb
2018-03-272400-011-0833ND
2018-05-142400-022-0926ND
2018-05-142400-024-1015ND
2018-05-142400-023-0944ND
2018-05-152400-007-12501.10 ppb
2018-05-152400-011-17131.30 ppb
2018-05-152400-005-08481.20 ppb
2018-08-212400-005-1304ND
2018-08-212400-007-11251.10 ppb
2018-08-212400-011-09351.30 ppb
2018-08-222400-024-1017ND
2018-08-222400-023-1448ND
2018-08-222400-022-1055ND
2018-11-062400-007-10331.10 ppb
2018-11-062400-011-09201.20 ppb
2018-11-062400-005-10251.10 ppb
2019-02-192400-007-0950ND
2019-02-192400-011-0728ND
2019-02-192400-005-0835ND
2019-05-212400-007-10491.20 ppb
2019-05-212400-005-1030ND
2019-05-212400-011-08512.10 ppb
2019-05-222400-024-1140ND
2019-05-222400-023-1032ND
2019-05-222400-022-1228ND
2019-08-202400-005-0825ND
2019-08-202400-007-09551.20 ppb
2019-08-202400-011-06541.40 ppb
2019-11-192400-005-1045ND
2019-11-192400-011-09261.20 ppb
2019-11-192400-007-12071.000 ppb
2019-11-202400-024-1036ND
2019-11-202400-023-1000ND
2019-11-202400-022-1115ND