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EWG's Tap Water Database — 2019 UPDATE

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Mercury (inorganic)

Chesterfield County Central Water System

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND40ND
2015ND40ND
2016ND40ND
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 Lab ID Result
2012-06-05E120400813ND
2012-06-05E120400834ND
2012-06-05E120400846ND
2012-06-05E120400853ND
2013-04-23E130202495ND
2013-04-23E130202490ND
2013-04-23E130202500ND
2013-04-23E130202517ND
2014-04-22E140308608ND
2014-04-22E140308599ND
2014-04-22E140308581ND
2014-04-22E140308583ND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2016-04-25E160305660ND
2016-04-25E160305669ND
2016-04-25E160305653ND
2016-04-25E160305667ND
2017-04-19E170304740ND
2017-04-19E170304734ND
2017-04-19E170304729ND
2017-04-19E170304737ND