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EWG's Tap Water Database — 2021 UPDATE

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Arsenic

U.S. Marine Corps - Housing Coleville

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.

MORE ABOUT THIS CONTAMINANT

 

201

Samples

2

Samples exceeding legal limit (MCL)

65

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.834 ppb5319ND - 7.20 ppb
20153.84 ppb4632ND - 24.0 ppb
20160.0667 ppb181ND - 1.20 ppb
2017N/A00N/A
20181.05 ppb426ND - 34.0 ppb
20190.600 ppb427ND - 6.20 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
2014-01-022326-007-1047ND
2014-01-092326-007-0855ND
2014-01-162326-007-0808ND
2014-01-222326-007-0912ND
2014-01-292326-007-1011ND
2014-02-052326-007-0853ND
2014-02-122326-007-0918ND
2014-02-192326-007-0908ND
2014-02-262326-007-0800ND
2014-03-052326-007-0834ND
2014-03-122326-007-08001.30 ppb
2014-03-192326-007-0753ND
2014-03-262326-007-0950ND
2014-04-022326-007-1038ND
2014-04-092326-007-0802ND
2014-04-142326-007-0818ND
2014-04-232326-007-1012ND
2014-04-302326-007-0830ND
2014-05-072326-007-0949ND
2014-05-142326-007-0847ND
2014-05-212326-007-1017ND
2014-06-042326-007-09534.40 ppb
2014-06-112326-007-11336.50 ppb
2014-06-182326-007-09107.20 ppb
2014-06-252326-007-09124.10 ppb
2014-07-022326-007-0959ND
2014-07-092326-007-10371.000 ppb
2014-07-162326-007-09201.20 ppb
2014-07-232326-007-10251.90 ppb
2014-07-252326-007-12421.60 ppb
2014-07-302326-007-09081.30 ppb
2014-08-062326-007-0847ND
2014-08-132326-007-0903ND
2014-08-202326-007-0912ND
2014-08-272326-007-1133ND
2014-09-032326-007-0925ND
2014-09-102326-007-0915ND
2014-09-172326-007-1014ND
2014-09-242326-007-09342.20 ppb
2014-10-012326-007-0950ND
2014-10-102326-007-09033.30 ppb
2014-10-152326-007-10121.000 ppb
2014-10-222326-007-0913ND
2014-10-292326-007-09561.20 ppb
2014-11-052326-007-0932ND
2014-11-122326-007-09291.30 ppb
2014-11-202326-007-09581.20 ppb
2014-11-252326-007-0922ND
2014-12-032326-007-10031.10 ppb
2014-12-102326-007-09151.30 ppb
2014-12-172326-007-0914ND
2014-12-232326-007-0952ND
2014-12-302326-007-10121.10 ppb
2015-01-072326-007-1049ND
2015-01-142326-007-09522.60 ppb
2015-01-212326-007-08572.10 ppb
2015-01-282326-007-09182.70 ppb
2015-02-182326-007-10123.80 ppb
2015-02-252326-007-10103.60 ppb
2015-03-042326-007-09403.70 ppb
2015-03-112326-007-10175.50 ppb
2015-03-182326-007-12105.50 ppb
2015-03-252326-007-09544.50 ppb
2015-04-012326-007-10337.20 ppb
2015-04-082326-007-10187.50 ppb
2015-04-152326-007-10037.70 ppb
2015-04-222326-007-09456.80 ppb
2015-04-292326-007-09127.60 ppb
2015-05-062326-007-09306.00 ppb
2015-05-152326-007-12003.20 ppb
2015-05-202326-007-09031.20 ppb
2015-05-272326-007-0928ND
2015-06-032326-007-0935ND
2015-06-102326-007-0912ND
2015-06-172326-007-08522.90 ppb
2015-06-242326-007-09222.60 ppb
2015-07-012326-007-11152.30 ppb
2015-07-082326-007-110024.0 ppb
2015-07-152326-007-07543.40 ppb
2015-07-222326-007-09373.60 ppb
2015-07-292326-007-09305.20 ppb
2015-08-052326-007-09374.50 ppb
2015-08-122326-007-08345.60 ppb
2015-08-192326-007-09134.90 ppb
2015-08-262326-007-10294.70 ppb
2015-09-092326-007-09197.20 ppb
2015-09-162326-007-10247.90 ppb
2015-09-232326-007-09209.20 ppb
2015-10-232326-007-09107.40 ppb
2015-10-282326-007-0916ND
2015-11-042326-007-0850ND
2015-11-112326-007-0933ND
2015-11-182326-007-0817ND
2015-11-252326-007-0907ND
2015-12-022326-007-0821ND
2015-12-092326-007-0902ND
2015-12-162326-007-0905ND
2015-12-232326-007-0924ND
2015-12-302326-007-0916ND
2016-01-062326-007-0937ND
2016-01-132326-007-0929ND
2016-01-202326-007-0854ND
2016-01-272326-007-0852ND
2016-02-032326-007-0925ND
2016-02-102326-007-0919ND
2016-02-192326-007-0916ND
2016-02-252326-007-0824ND
2016-03-022326-007-0947ND
2016-03-092326-007-0907ND
2016-03-162326-007-0845ND
2016-03-302326-007-0855ND
2016-04-062326-007-0839ND
2016-04-132326-007-08591.20 ppb
2016-04-202326-007-0955ND
2016-04-272326-007-0824ND
2016-09-282326-007-0900ND
2016-10-262326-007-0847ND
2018-01-032326-007-082234.0 ppb
2018-01-032326-007-0824ND
2018-01-242326-007-08221.70 ppb
2018-02-072326-007-0851ND
2018-02-142326-007-0842ND
2018-02-212326-007-0852ND
2018-02-282326-007-0852ND
2018-03-072326-007-0832ND
2018-03-142326-007-0832ND
2018-03-212326-007-0817ND
2018-03-282326-007-0841ND
2018-04-042326-007-0841ND
2018-04-112326-007-0834ND
2018-05-022326-007-0802ND
2018-05-092326-007-0832ND
2018-05-162326-007-0836ND
2018-05-232326-007-0813ND
2018-06-062326-007-0804ND
2018-06-132326-007-0821ND
2018-06-192326-007-0910ND
2018-06-272326-007-08371.30 ppb
2018-07-052326-007-08511.000 ppb
2018-07-112326-007-0816ND
2018-07-182326-007-0811ND
2018-07-252326-007-0911ND
2018-08-082326-007-0817ND
2018-08-222326-007-08413.10 ppb
2018-08-292326-007-08262.80 ppb
2018-09-122326-007-0812ND
2018-09-192326-007-0832ND
2018-09-262326-007-0826ND
2018-10-032326-007-0851ND
2018-10-102326-007-0805ND
2018-10-172326-007-0858ND
2018-10-242326-007-0916ND
2018-10-312326-007-0843ND
2018-11-072326-007-0902ND
2018-11-142326-007-0826ND
2018-11-202326-007-0845ND
2018-11-282326-007-0906ND
2018-12-052326-007-0940ND
2018-12-192326-007-0831ND
2019-01-022326-007-0831ND
2019-01-092326-007-0822ND
2019-01-162326-007-0843ND
2019-01-232326-007-0846ND
2019-01-302326-007-0856ND
2019-02-062326-007-0938ND
2019-02-132326-007-0834ND
2019-02-202326-007-0812ND
2019-02-272326-007-0821ND
2019-03-062326-007-0723ND
2019-03-132326-007-0805ND
2019-03-202326-007-0823ND
2019-03-262326-007-0900ND
2019-04-032326-007-0806ND
2019-04-102326-007-1036ND
2019-04-172326-007-0829ND
2019-04-242326-007-0910ND
2019-05-012326-007-0921ND
2019-05-082326-007-0919ND
2019-05-152326-007-0913ND
2019-06-192326-007-0833ND
2019-06-232326-007-0907ND
2019-07-102326-007-0909ND
2019-07-172326-007-0846ND
2019-07-242326-007-0911ND
2019-07-312326-007-08593.50 ppb
2019-08-072326-007-08474.10 ppb
2019-08-142326-007-08216.20 ppb
2019-08-282326-007-0843ND
2019-09-032326-007-0750ND
2019-09-112326-007-0814ND
2019-09-182326-007-0836ND
2019-10-092326-007-0827ND
2019-10-162326-007-0825ND
2019-10-302326-007-0827ND
2019-11-132326-007-0811ND
2019-11-202326-007-0828ND
2019-11-262326-007-0831ND
2019-12-042326-007-08302.00 ppb
2019-12-112326-007-08212.20 ppb
2019-12-182326-007-09162.80 ppb
2019-12-302326-007-08404.40 ppb