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EWG's Tap Water Database — 2019 UPDATE

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Arsenic

Mission Springs WD

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND100ND
2015N/A00N/A
2016N/A00N/A
20170.270 ppb101ND - 2.70 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 Lab ID Result
2014-07-073761-026-0825ND
2014-07-073761-014-0911ND
2014-07-083761-030-0922ND
2014-07-083761-015-0849ND
2014-07-083761-010-0747ND
2014-07-083761-008-0817ND
2014-07-093761-013-1035ND
2014-07-093761-025-1118ND
2014-07-093761-011-1203ND
2014-07-093761-017-1051ND
2017-06-013761-015-1246ND
2017-06-013761-013-1108ND
2017-06-053761-026-1200ND
2017-06-053761-014-1130ND
2017-06-063761-010-0945ND
2017-06-063761-011-1200ND
2017-06-063761-017-1100ND
2017-06-063761-025-13002.70 ppb
2017-06-073761-030-1200ND
2017-06-073761-008-1124ND