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EWG's Tap Water Database — 2021 UPDATE

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Cobalt

City of La Porte

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

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND280ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/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
2015-02-24Q1507111013ND
2015-02-24Q1507111007ND
2015-02-24Q1507111003ND
2015-02-24Q1507111001ND
2015-02-24Q1507111005ND
2015-02-24Q1507111015ND
2015-02-24Q1507111023ND
2015-02-24Q1507111021ND
2015-02-24Q1507111011ND
2015-02-24Q1507111019ND
2015-02-24Q1507111017ND
2015-02-24Q1507111009ND
2015-05-19Q1518293003ND
2015-05-19Q1518293001ND
2015-08-17Q1532491011ND
2015-08-17Q1532491009ND
2015-08-17Q1532491013ND
2015-08-17Q1532491017ND
2015-08-17Q1532491015ND
2015-08-17Q1532491005ND
2015-08-17Q1532491021ND
2015-08-17Q1532491019ND
2015-08-17Q1532491023ND
2015-08-17Q1532491001ND
2015-08-17Q1532491003ND
2015-08-17Q1532491007ND
2015-11-17Q1545123001ND
2015-11-17Q1545123003ND