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EWG's Tap Water Database — 2019 UPDATE

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Arsenic

Lockport

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.

 

12

Samples

1

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
20145.38 ppb32ND - 10.5 ppb
20150.817 ppb220.773 ppb - 0.861 ppb
20161.21 ppb220.944 ppb - 1.48 ppb
20170.837 ppb110.837 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
2012-02-141202592-001AND
2012-05-221205A48-001AND
2013-01-221301983-001AND
2013-10-221310C50-001AND
2014-10-141410732-002AND
2014-10-141410732-001A10.5 ppb
2014-11-241411D53-001A5.64 ppb
2015-01-201501A97-001A0.861 ppb
2015-06-161506E89-001A0.773 ppb
2016-01-261601E20-001A1.48 ppb
2016-10-041610210-001A0.944 ppb
2017-10-031710136-001A0.837 ppb