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EWG's Tap Water Database

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Mercury (inorganic)

Del-Co Water Company Inc.

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND40ND
2011ND40ND
2012ND40ND
2013ND40ND
2014ND50ND
2015ND40ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 1.2 ppb

The 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.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 2 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)2 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-02-0810183701ND
2010-02-0810183801ND
2010-02-0810183901ND
2010-06-07104726-01ND
2011-01-1711-10359-01AND
2011-01-1711-10358-01ND
2011-01-1711-10357-01ND
2011-06-1511-14240-01AND
2012-01-0912-10325-01ND
2012-01-0912-10322-01AND
2012-01-0912-10323-01AND
2012-06-0512-16249-03ND
2013-01-0813-10284-01ND
2013-01-0813-10283-01AND
2013-01-0813-10282-01AND
2013-06-1013-17185-01AND
2014-01-0714-10164-03AND
2014-01-0714-10161-03AND
2014-01-0714-10165-01AND
2014-05-0714-15406-01AND
2014-06-3014-18397-01AND
2015-01-0515-10020-01ND
2015-01-0515-10022-01AND
2015-01-0515-10021-01AND
2015-06-0815-17517-01AND