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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

City of Puyallup

Cobalt is a metal found throughout the environment; people may be exposed to cobalt in air, food and drinking water.

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
2015ND360ND
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 70 ppb

The EWG Health Guideline of 70 ppb for cobalt was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against change in blood chemistry.

ppb = parts per billion

All test results

Date Lab ID Result
2015-02-03201502050883AMND
2015-02-03201502050455AMND
2015-02-03201502050905AMND
2015-02-03201502050727AMND
2015-02-03201502050688AMND
2015-02-03201502050880AMND
2015-02-03201502050842AMND
2015-02-03201502050731AMND
2015-02-03201502050764AMND
2015-02-03201502050875AMND
2015-02-03201502050735AMND
2015-02-03201502050400AMND
2015-02-03201502050717AMND
2015-02-03201502050725AMND
2015-02-03201502050855AMND
2015-05-05201505070577AMND
2015-05-05201505070594AMND
2015-08-06201508070106AMND
2015-08-06201508070114AMND
2015-08-06201508070229AMND
2015-08-06201508070195AMND
2015-08-06201508070232AMND
2015-08-06201508070151AMND
2015-08-06201508070198AMND
2015-08-06201508110453AMND
2015-08-06201508070108AMND
2015-08-06201508070118AMND
2015-08-06201508070125AMND
2015-08-06201508070135AMND
2015-08-06201508070201AMND
2015-08-06201508070121AMND
2015-08-06201508070155AMND
2015-08-06201508070215AMND
2015-09-29201509300232AMND
2015-11-17201511180504AMND
2015-11-17201511180474AMND