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EWG's Tap Water Database — 2021 UPDATE

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Arsenic

City of Alexandria Water System

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

 

172

Samples

0

Samples exceeding legal limit (MCL)

36

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
20160.311 ppb7218ND - 2.50 ppb
20170.150 ppb102ND - 0.750 ppb
2018N/A00N/A
20190.162 ppb9016ND - 1.70 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
2016-05-10352444080010.750 ppb
2016-05-1035244408002ND
2016-05-10352444080032.30 ppb
2016-05-10352444080040.500 ppb
2016-05-1035244408005ND
2016-05-10352444080010.750 ppb
2016-05-1035244408002ND
2016-05-10352444080032.30 ppb
2016-05-10352444080040.500 ppb
2016-05-1035244408005ND
2016-05-18352457760010.500 ppb
2016-05-1835245776002ND
2016-05-1835245776003ND
2016-05-1835245776004ND
2016-05-1835245776005ND
2016-05-18352457760010.500 ppb
2016-05-1835245776002ND
2016-05-1835245776003ND
2016-05-1835245776004ND
2016-05-1835245776005ND
2016-05-2535246558001ND
2016-05-2535246558002ND
2016-05-2535246558003ND
2016-05-2535246558004ND
2016-05-2535246558005ND
2016-05-2535246558001ND
2016-05-2535246558002ND
2016-05-2535246558003ND
2016-05-2535246558004ND
2016-05-2535246558005ND
2016-06-0635248060001ND
2016-06-0635248060002ND
2016-06-06352480600030.670 ppb
2016-06-0635248060004ND
2016-06-0635248060005ND
2016-06-0635248060001ND
2016-06-0635248060002ND
2016-06-06352480600030.670 ppb
2016-06-0635248060004ND
2016-06-0635248060005ND
2016-06-1535250015001ND
2016-06-1535250015002ND
2016-06-15352500150030.960 ppb
2016-06-1535250015004ND
2016-06-1535250015005ND
2016-06-1535250015001ND
2016-06-1535250015002ND
2016-06-15352500150030.960 ppb
2016-06-1535250015004ND
2016-06-1535250015005ND
2016-07-1935255757001ND
2016-07-1935255757002ND
2016-07-1935255757001ND
2016-07-1935255757002ND
2016-08-0935259194001ND
2016-08-0935259194002ND
2016-08-0935259194003ND
2016-08-0935259194004ND
2016-08-0935259194005ND
2016-08-0935259194001ND
2016-08-0935259194002ND
2016-08-0935259194003ND
2016-08-0935259194004ND
2016-08-0935259194005ND
2016-10-05352711420052.50 ppb
2016-10-05352711420052.50 ppb
2016-11-09352766530012.20 ppb
2016-11-0935276653002ND
2016-11-09352766530012.20 ppb
2016-11-0935276653002ND
2016-12-14352839290040.830 ppb
2016-12-14352839290040.830 ppb
2017-03-0835299871001ND
2017-03-0835299871002ND
2017-03-0835299871001ND
2017-03-0835299871002ND
2017-08-0735329426006ND
2017-08-0735329426006ND
2017-11-0235345825001ND
2017-11-02353458250020.750 ppb
2017-11-0235345825001ND
2017-11-02353458250020.750 ppb
2019-01-3035445470001ND
2019-01-30354454700020.720 ppb
2019-01-3035445470003ND
2019-01-3035445470004ND
2019-01-30354454700051.50 ppb
2019-01-3035445470001ND
2019-01-30354454700020.720 ppb
2019-01-3035445470003ND
2019-01-3035445470004ND
2019-01-30354454700051.50 ppb
2019-02-0635446987001ND
2019-02-0635446987002ND
2019-02-0635446987003ND
2019-02-0635446987004ND
2019-02-0635446987005ND
2019-02-0635446987001ND
2019-02-0635446987002ND
2019-02-0635446987003ND
2019-02-0635446987004ND
2019-02-0635446987005ND
2019-02-2735451250001ND
2019-02-27354512500020.550 ppb
2019-02-2735451250003ND
2019-02-27354512500041.70 ppb
2019-02-2735451250005ND
2019-02-2735451250001ND
2019-02-27354512500020.550 ppb
2019-02-2735451250003ND
2019-02-27354512500041.70 ppb
2019-02-2735451250005ND
2019-03-1335454676001ND
2019-03-1335454676002ND
2019-03-1335454676003ND
2019-03-13354546760040.650 ppb
2019-03-1335454676001ND
2019-03-1335454676002ND
2019-03-1335454676003ND
2019-03-13354546760040.650 ppb
2019-03-2035456260001ND
2019-03-20354562600020.830 ppb
2019-03-2035456260003ND
2019-03-2035456260004ND
2019-03-2035456260005ND
2019-03-2035456260001ND
2019-03-20354562600020.830 ppb
2019-03-2035456260003ND
2019-03-2035456260004ND
2019-03-2035456260005ND
2019-03-2735457693001ND
2019-03-2735457693002ND
2019-03-2735457693003ND
2019-03-2735457693004ND
2019-03-2735457693005ND
2019-03-2735457693001ND
2019-03-2735457693002ND
2019-03-2735457693003ND
2019-03-2735457693004ND
2019-03-2735457693005ND
2019-04-10354610500010.720 ppb
2019-04-1035461050002ND
2019-04-1035461050004ND
2019-04-10354610500050.610 ppb
2019-04-10354610500010.720 ppb
2019-04-1035461050002ND
2019-04-1035461050004ND
2019-04-10354610500050.610 ppb
2019-06-06B1902352-001ND
2019-06-06B1902352-003ND
2019-06-06B1902352-001ND
2019-06-06B1902352-003ND
2019-07-25B1903186-001ND
2019-07-25B1903188-001ND
2019-07-25B1903186-001ND
2019-07-25B1903188-001ND
2019-09-11B1904050-001ND
2019-09-11B1904050-002ND
2019-09-11B1904050-003ND
2019-09-11B1904050-001ND
2019-09-11B1904050-002ND
2019-09-11B1904050-003ND
2019-12-04B1905453-001ND
2019-12-04B1905453-002ND
2019-12-04B1905453-003ND
2019-12-04B1905453-004ND
2019-12-04B1905453-005ND
2019-12-04B1905453-001ND
2019-12-04B1905453-002ND
2019-12-04B1905453-003ND
2019-12-04B1905453-004ND
2019-12-04B1905453-005ND