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EWG's Tap Water Database — 2019 UPDATE

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Arsenic

Beverly Hills / Rolling Oaks Subdivision

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.444 ppb97ND - 0.800 ppb
2015N/A00N/A
2016N/A00N/A
20170.422 ppb990.300 ppb - 0.600 ppb

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 Result
2014-06-180.400 ppb
2014-06-180.600 ppb
2014-06-180.800 ppb
2014-06-180.600 ppb
2014-06-18ND
2014-06-180.700 ppb
2014-06-190.500 ppb
2014-07-10ND
2014-07-100.400 ppb
2017-05-300.400 ppb
2017-05-300.300 ppb
2017-05-300.500 ppb
2017-05-300.300 ppb
2017-05-300.400 ppb
2017-05-300.600 ppb
2017-05-300.400 ppb
2017-05-300.400 ppb
2017-05-300.500 ppb