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EWG's Tap Water Database — 2019 UPDATE

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Mercury (inorganic)

Town of Princess Anne

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND70ND
2014N/A00N/A
2015ND20ND
2016ND90ND
2017N/A00N/A

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
2012-01-12120112_08_A12010ND
2012-02-08120208_07_004259ND
2012-02-08120208_08_004261ND
2012-12-19121219_08_L44304ND
2013-03-14130314_01_L45280ND
2013-03-14130314_03_L45280ND
2013-03-14130314_04_L45805ND
2013-04-09130409_05_L45580ND
2013-04-09130409_02_L45580ND
2013-04-09130409_06_L45580ND
2013-10-17131017_03_002074ND
2015-09-29L5834178-5ND
2015-12-28L597294_1ND
2016-03-30E16003647002ND
2016-03-30E16003647004ND
2016-08-05E17000499003ND
2016-08-05E17000499002ND
2016-12-21L6605660_1ND
2016-12-21L6605660_2ND
2016-12-21L6605660_3ND
2016-12-21L6605660_4ND
2016-12-24L6609497_1ND