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EWG's Tap Water Database

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Barium

Clarksville Waterworks

Barium is a mineral present in rocks, soil and water. High concentrations of barium in drinking water increase the risk of cardiovascular disease and hypertension.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201011.0 ppb1111.0 ppb
2011ND10ND
2012ND20ND
2013ND10ND
2014ND20ND
2015ND10ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 700 ppb

The health guideline of 700 ppb for barium was defined by EWG as benchmark that protects against harm to the kidneys and the cardiovascular system. This health guideline protects against harm to internal organs.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 2,000 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)2,000 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
2010-01-0410007000511.0 ppb
2011-01-04110060002ND
2012-01-04Y120060007ND
2012-01-04120060007ND
2013-01-03130040015ND
2014-02-26140580001ND
2014-03-10140720021ND
2015-02-02Y150370001ND