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EWG's Tap Water Database — 2021 UPDATE

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Arsenic

City of Sherman

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.650 ppb21ND - 1.30 ppb
20150.960 ppb110.960 ppb
2016ND90ND
2017ND30ND
2018ND10ND
20190.122 ppb91ND - 1.10 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
2014-04-22Q1412762003ND
2014-06-16Q14214030051.30 ppb
2015-03-17Q15098880040.960 ppb
2016-01-20Q1602479019ND
2016-01-20Q1602479018ND
2016-01-20Q1602479017ND
2016-04-11Q1614214006ND
2016-11-08Q1648503006ND
2016-11-08Q1648503005ND
2016-11-08Q1648503004ND
2016-11-08Q1648503003ND
2016-11-08Q1648503002ND
2017-01-12Q1701556004ND
2017-01-12Q1701556012ND
2017-07-11Q1728660017ND
2018-07-05Q1826605004ND
2019-02-12Q1906434014ND
2019-02-12Q19064340131.10 ppb
2019-02-12Q1906434012ND
2019-02-12Q1906434011ND
2019-05-07Q1922272015ND
2019-05-07Q1922272019ND
2019-05-07Q1922272018ND
2019-05-07Q1922272017ND
2019-05-07Q1922272016ND