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EWG's Tap Water Database — 2019 UPDATE

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Mercury (inorganic)

City of Corsicana

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND20ND
2014ND20ND
20150.135 ppb21ND - 0.269 ppb
20160.0945 ppb21ND - 0.189 ppb
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
2013-07-08Q1303383026ND
2013-07-08Q1303383025ND
2014-05-15Q1416551004ND
2014-05-15Q1416551003ND
2015-01-28Q1503409004ND
2015-01-28Q15034090030.269 ppb
2016-02-02Q1604417004ND
2016-02-02Q16044170030.189 ppb
2017-01-17Q1702000001ND
2017-07-26Q1730737003ND