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EWG's Tap Water Database — 2019 UPDATE

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Mercury (inorganic)

Lehigh County Authority Allentown Division

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.200 ppb220.200 ppb
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

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
2012-07-12L4243701-10.200 ppb
2012-07-12L4243701-20.200 ppb
2013-02-07L4488090-1ND
2013-02-07L4488090-2ND
2014-05-2014050157-01ND
2014-05-2014050158-01ND
2015-08-0713170879ND
2015-08-0713170867ND
2016-08-1614784730ND
2016-08-1614784742ND
2017-08-1516611755ND
2017-08-1516611767ND