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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

City of Manteca

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

 

32

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
2013ND180ND
2014ND20ND
2015ND120ND
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
2013-05-14A3E1304-01AND
2013-05-14A3E1304-04AND
2013-08-14A3H0730-01AND
2013-08-14A3H0730-04AND
2013-11-18A3J2218-15AND
2013-11-19A3J2218-17AND
2013-11-19A3J2218-05AND
2013-11-19A3J2218-03AND
2013-11-19A3J2218-09AND
2013-11-19A3J2218-07AND
2013-11-19A3J2230-01AND
2013-11-19A3J2218-01AND
2013-11-19A3J2218-19AND
2013-11-19A3J2230-03AND
2013-11-19A3J2218-13AND
2013-11-19A3J2218-23AND
2013-11-19A3J2218-11AND
2013-11-19A3J2218-21AND
2014-02-26A4B0701-03AND
2014-04-23A4D1242-01AND
2015-07-07A5D1723-05AND
2015-07-07A5D1723-19AND
2015-07-07A5D1723-21AND
2015-07-07A5D1723-15AND
2015-07-07A5D1723-13AND
2015-07-07A5D1723-11AND
2015-07-07A5D1723-03AND
2015-07-07A5D1723-07AND
2015-07-07A5D1723-01AND
2015-07-07A5D1723-09AND
2015-07-07A5D1723-17AND
2015-07-08A5D1723-23AND