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EWG's Tap Water Database — 2019 UPDATE

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Cobalt

City of Mesa

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

 

128

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
20130.00924 ppb1191ND - 1.10 ppb
2014ND70ND
2015ND20ND
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
2013-01-15201301160556AMND
2013-01-15201301160548AMND
2013-01-15201301160554AMND
2013-01-16201301160558AMND
2013-01-16201301160560AMND
2013-01-16201301160566AMND
2013-01-16201301160562AMND
2013-01-16201301160564AMND
2013-01-22201301240174AMND
2013-01-22201301240176AMND
2013-01-22201301240152AMND
2013-01-23201301240195AMND
2013-01-23201301240197AMND
2013-01-30201301310433AMND
2013-01-30201301310431AMND
2013-02-12201302140551AMND
2013-02-12201302140549AMND
2013-02-12201302140542AMND
2013-02-12201302140544AMND
2013-02-13201302140538AMND
2013-02-13201302140540AMND
2013-02-13201302140535AMND
2013-02-13201302140531AMND
2013-02-13201302140529AMND
2013-02-13201302140533AMND
2013-02-19201302200375AMND
2013-02-19201302200373AMND
2013-02-19201302200371AMND
2013-02-26201302260119AMND
2013-04-08201304100491AMND
2013-04-09201304100493AMND
2013-04-09201304100477AMND
2013-04-09201304100479AMND
2013-04-09201304100481AM1.10 ppb
2013-04-10201304110552AMND
2013-04-10201304110554AMND
2013-04-10201304110546AMND
2013-04-10201304110540AMND
2013-04-10201304110542AMND
2013-04-10201304110544AMND
2013-04-16201304170691AMND
2013-04-17201304170699AMND
2013-04-17201304170697AMND
2013-04-17201304170701AMND
2013-04-17201304170695AMND
2013-05-09201305100038AMND
2013-05-09201305100040AMND
2013-05-09201305100042AMND
2013-05-09201305100044AMND
2013-05-14201305150463AMND
2013-05-14201305150465AMND
2013-05-15201305150520AMND
2013-05-15201305150518AMND
2013-05-20201305200188AMND
2013-05-20201305200190AMND
2013-05-20201305200068AMND
2013-05-20201305200127AMND
2013-05-29201305290453AMND
2013-05-29201305290411AMND
2013-07-09201307100755AMND
2013-07-09201307100757AMND
2013-07-10201307100761AMND
2013-07-23201307240533AMND
2013-07-23201307240535AMND
2013-07-23201307240531AMND
2013-07-24201307240537AMND
2013-07-24201307240544AMND
2013-08-05201308070778AMND
2013-08-05201308070622AMND
2013-08-05201308070618AMND
2013-08-05201308070620AMND
2013-08-05201308070624AMND
2013-08-06201308070603AMND
2013-08-06201308070601AMND
2013-08-06201308070586AMND
2013-08-06201308070588AMND
2013-08-06201308070584AMND
2013-08-07201308070605AMND
2013-08-07201308070590AMND
2013-08-12201308130444AMND
2013-08-12201308130442AMND
2013-08-12201308130434AMND
2013-08-12201308130430AMND
2013-08-12201308130432AMND
2013-08-13201308140060AMND
2013-08-13201308140062AMND
2013-08-14201308140418AMND
2013-08-14201308140416AMND
2013-08-14201308140394AMND
2013-08-14201308140392AMND
2013-10-08201310080652AMND
2013-10-08201310080650AMND
2013-10-08201310080610AMND
2013-10-08201310080612AMND
2013-10-08201310080614AMND
2013-10-08201310080616AMND
2013-10-09201310090515AMND
2013-10-09201310090517AMND
2013-10-09201310090511AMND
2013-10-09201310090513AMND
2013-10-15201310150507AMND
2013-10-15201310150505AMND
2013-10-15201310150503AMND
2013-10-16201310160477AMND
2013-10-16201310160475AMND
2013-10-31201310310439AMND
2013-11-05201311070311AMND
2013-11-05201311070309AMND
2013-11-05201311050403AMND
2013-11-05201311050401AMND
2013-11-06201311070313AMND
2013-11-06201311070298AMND
2013-11-06201311070294AMND
2013-11-06201311070300AMND
2013-11-06201311070296AMND
2013-11-12201311130338AMND
2013-11-12201311130336AMND
2013-11-13201311140713AMND
2013-11-20201311210516AMND
2014-01-23201401230427AMND
2014-03-25201403250421AMND
2014-03-25201403250419AMND
2014-06-17201406180491AMND
2014-07-15201407160688AMND
2014-09-02201409020219AMND
2014-09-02201409020217AMND
2015-01-21201501220206AMND
2015-01-21201501220204AMND