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EWG's Tap Water Database — 2019 UPDATE

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Mercury (inorganic)

Attleboro Water Department

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND30ND
2014ND20ND
2015ND40ND
2016ND50ND
2017ND40ND

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
2012-02-02ND
2012-12-31ND
2013-01-02ND
2013-12-02ND
2013-12-02ND
2014-01-02ND
2014-06-16ND
2015-01-07ND
2015-03-04ND
2015-08-21ND
2015-10-01ND
2016-01-06ND
2016-08-03ND
2016-08-03ND
2016-10-05ND
2016-10-05ND
2017-01-04ND
2017-06-27ND
2017-10-04ND
2017-10-04ND