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EWG's Tap Water Database — 2021 UPDATE

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Mercury (inorganic)

City of Edmond - Arcadia Lake

Mercury is a potent neurotoxin that also damages the kidneys and other internal organs. Mercury enters drinking water from industrial pollution, mining wastes and coal-fired power plants.

MORE ABOUT THIS CONTAMINANT

 

51

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016N/A00N/A
2017ND10ND
2018ND10ND
2019ND460ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1.2 ppb

The EWG Health Guideline of 1.2 ppb for mercury (inorganic) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 2 ppb

The legal limit for inorganic mercury, established in 1991, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2014-12-174L17093-01ND
2015-11-095K09022-01ND
2015-11-305K30021-01ND
2017-03-217C21038-04ND
2018-07-30AG30042-33ND
2019-09-301824716ND
2019-09-301824715ND
2019-09-301824717ND
2019-09-301824718ND
2019-09-301824719ND
2019-09-301824720ND
2019-09-301824721ND
2019-09-301824722ND
2019-09-301824723ND
2019-09-301824724ND
2019-09-301824725ND
2019-09-301824726ND
2019-09-301824727ND
2019-09-301824728ND
2019-09-301824729ND
2019-09-301824730ND
2019-09-301824731ND
2019-09-301824732ND
2019-09-301824733ND
2019-09-301824734ND
2019-09-301824735ND
2019-09-301824702ND
2019-09-301824689ND
2019-09-301824690ND
2019-09-301824692ND
2019-09-301824693ND
2019-09-301824694ND
2019-09-301824695ND
2019-09-301824696ND
2019-09-301824697ND
2019-09-301824698ND
2019-09-301824699ND
2019-09-301824700ND
2019-09-301824701ND
2019-09-301824703ND
2019-09-301824704ND
2019-09-301824705ND
2019-09-301824706ND
2019-09-301824707ND
2019-09-301824708ND
2019-09-301824709ND
2019-09-301824710ND
2019-09-301824712ND
2019-09-301824713ND
2019-09-301824714ND
2019-11-211841037ND