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EWG's Tap Water Database — 2021 UPDATE

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Molybdenum

California American Water Company - Parkway

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.

 

65

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.485 ppb208ND - 1.50 ppb
20150.742 ppb2414ND - 1.70 ppb
2016N/A00N/A
2017N/A00N/A
2018ND210ND
2019N/A00N/A

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
2014-12-02276798011.50 ppb
2014-12-0231597011.10 ppb
2014-12-0227679501ND
2014-12-02276787011.10 ppb
2014-12-0227680201ND
2014-12-02276815011.10 ppb
2014-12-0227679301ND
2014-12-02276800011.20 ppb
2014-12-033159707ND
2014-12-033159720ND
2014-12-033159722ND
2014-12-033159718ND
2014-12-043159682ND
2014-12-0431598781.50 ppb
2014-12-0431598741.10 ppb
2014-12-043159876ND
2014-12-1627680601ND
2014-12-1627678801ND
2014-12-1727681701ND
2014-12-17277849011.10 ppb
2015-03-1928476801ND
2015-03-1928476701ND
2015-06-09293065011.000 ppb
2015-06-09293063011.70 ppb
2015-06-09293081011.10 ppb
2015-06-09293079011.60 ppb
2015-06-11293083011.40 ppb
2015-06-11293059011.20 ppb
2015-06-17293087011.20 ppb
2015-06-1729305801ND
2015-06-1729308901ND
2015-06-17293060011.10 ppb
2015-06-1829306201ND
2015-06-18293061011.000 ppb
2015-06-18293064011.10 ppb
2015-06-1829307501ND
2015-06-1829308501ND
2015-06-18293069011.40 ppb
2015-06-2329307101ND
2015-06-2329306801ND
2015-06-23293066011.10 ppb
2015-06-23293073011.20 ppb
2015-09-17302384011.70 ppb
2015-09-1730238501ND
2018-08-081233-002-1100ND
2018-08-091233-006-1140ND
2018-08-091233-016-0930ND
2018-08-091233-017-0835ND
2018-08-141233-025-0740ND
2018-08-141233-023-0830ND
2018-08-141233-022-0910ND
2018-08-141233-021-1005ND
2018-08-141233-015-1020ND
2018-08-141233-013-1145ND
2018-08-141233-011-0900ND
2018-08-141233-008-1105ND
2018-08-151233-034-1335ND
2018-08-151233-032-0905ND
2018-08-151233-026-1210ND
2018-08-151233-024-1250ND
2018-08-151233-018-1210ND
2018-08-151233-042-1325ND
2018-08-151233-043-0855ND
2018-08-161233-044-0745ND
2018-08-161233-033-0755ND