Cobalt

City of League City

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	18	ND
2015	ND	17	ND
2016	N/A	0	N/A
2017	N/A	0	N/A
2018	N/A	0	N/A
2019	N/A	0	N/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
2014-09-09	Q1442411029	ND
2014-09-09	Q1442411017	ND
2014-09-09	Q1442411013	ND
2014-09-09	Q1442411025	ND
2014-09-09	Q1442411001	ND
2014-09-09	Q1442411009	ND
2014-09-09	Q1442411005	ND
2014-09-09	Q1442411039	ND
2014-09-09	Q1442411033	ND
2014-09-09	Q1442411041	ND
2014-09-09	Q1442411037	ND
2014-09-09	Q1442411021	ND
2014-09-09	Q1442411031	ND
2014-09-09	Q1442411035	ND
2014-12-08	Q1458833001	ND
2014-12-08	Q1458833009	ND
2014-12-08	Q1458833011	ND
2014-12-08	Q1458833005	ND
2015-03-17	Q1509730009	ND
2015-03-17	Q1509730013	ND
2015-03-17	Q1509730021	ND
2015-03-17	Q1509730027	ND
2015-03-17	Q1509730001	ND
2015-03-17	Q1509730025	ND
2015-03-17	Q1509730005	ND
2015-03-17	Q1509730017	ND
2015-03-17	Q1509730033	ND
2015-03-17	Q1509730031	ND
2015-03-17	Q1509730029	ND
2015-03-17	Q1509730035	ND
2015-03-17	Q1509730037	ND
2015-06-24	Q1523686005	ND
2015-06-24	Q1523686011	ND
2015-06-24	Q1523686009	ND
2015-06-24	Q1523686001	ND