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EWG's Tap Water Database — 2019 UPDATE

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Arsenic

Lee County WSC

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
20130.491 ppb21ND - 0.981 ppb
2014N/A00N/A
2015ND20ND
2016ND50ND
2017ND50ND

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
2012-01-11AB77426ND
2013-10-14Q13088540290.981 ppb
2013-10-14Q1308854017ND
2015-03-04AC82817ND
2015-03-04AC82818ND
2016-01-27AD20303ND
2016-01-27AD20304ND
2016-01-27AD20302ND
2016-04-12AD32724ND
2016-04-12AD32718ND
2017-01-30AD67458ND
2017-01-30AD67457ND
2017-05-04AD82652ND
2017-05-04AD82645ND
2017-07-24AD90256ND