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EWG's Tap Water Database — 2021 UPDATE

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Arsenic

Lebanon

Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

MORE ABOUT THIS CONTAMINANT

 

24

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
20160.150 ppb131ND - 1.95 ppb
2017ND40ND
2018ND10ND
2019ND60ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.004 ppb

The EWG Health Guideline of 0.004 ppb for arsenic 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 cancer.

EPA Maximum Contaminant
Level (MCL) 10 ppb

The legal limit for arsenic, established in 2001, was based on costs for arsenic removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to arsenic exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2016-02-29AC66567ND
2016-02-29AC66565ND
2016-02-29AC66564ND
2016-02-29AC665691.95 ppb
2016-02-29AC66568ND
2016-02-29AC66566ND
2016-02-29AC66563ND
2016-03-25AC69033ND
2016-03-25AC69046ND
2016-04-04AC70292ND
2016-04-04AC70293ND
2016-08-02AC80038ND
2016-10-12AC85441ND
2017-01-30AC89314ND
2017-04-17AC94652ND
2017-07-18AD01718ND
2017-10-24AD08055ND
2018-05-08AD18222ND
2019-03-04AD39580ND
2019-03-04AD39581ND
2019-03-04AD39582ND
2019-03-04AD39583ND
2019-03-04AD39584ND
2019-03-04AD39585ND