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EWG's Tap Water Database — 2019 UPDATE

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Mercury (inorganic)

East Cherry Creek Valley Water and Sanitation District

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.

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND140ND
2013N/A00N/A
2014ND130ND
2015ND10ND
2016N/A00N/A
2017ND10ND

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 Result
2012-04-12ND
2012-04-12ND
2012-04-13ND
2012-04-19ND
2012-04-23ND
2012-04-26ND
2012-04-26ND
2012-05-04ND
2012-05-10ND
2012-05-17ND
2012-05-17ND
2012-05-25ND
2012-07-13ND
2012-10-25ND
2014-05-19ND
2014-08-08ND
2014-08-13ND
2014-08-14ND
2014-08-14ND
2014-08-19ND
2014-08-19ND
2014-08-21ND
2014-08-25ND
2014-08-25ND
2014-08-25ND
2014-08-25ND
2014-11-19ND
2015-02-03ND
2017-08-15ND