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EWG's Tap Water Database — 2019 UPDATE

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Arsenic

Suez

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.

 

232

Samples

3

Samples exceeding legal limit (MCL)

124

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.59 ppb175ND - 7.00 ppb
20132.47 ppb199ND - 7.00 ppb
20142.31 ppb6427ND - 9.00 ppb
20152.47 ppb3017ND - 8.00 ppb
20164.00 ppb2118ND - 9.80 ppb
20172.72 ppb8148ND - 15.0 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
2012-02-13I1204322ND
2012-02-13I1204318ND
2012-04-09I12098977.00 ppb
2012-04-09I1209866ND
2012-04-09I1209894ND
2012-04-10I1210106ND
2012-05-30I1215650ND
2012-05-30I1215646ND
2012-05-30I12156527.00 ppb
2012-06-20I1218353ND
2012-06-21I12185306.00 ppb
2012-06-21I1218525ND
2012-07-16I12213694.00 ppb
2012-07-16I1221373ND
2012-07-17I12216523.00 ppb
2012-07-17I1221649ND
2012-07-17I1221650ND
2013-03-11I1310330ND
2013-05-20I13215687.00 ppb
2013-06-05I13239174.00 ppb
2013-06-05I13239163.00 ppb
2013-06-05I1323913ND
2013-06-05I1323912ND
2013-06-05I13239146.00 ppb
2013-06-05I13239214.00 ppb
2013-06-18I1326017ND
2013-06-18I13260195.00 ppb
2013-07-09I1329338ND
2013-07-10I1329587ND
2013-07-10I13295926.00 ppb
2013-07-10I13295937.00 ppb
2013-07-11I13298175.00 ppb
2013-07-11I1329810ND
2013-07-11I1329812ND
2013-07-11I1329816ND
2013-08-07I1333781ND
2014-03-04I14077256.00 ppb
2014-03-04I1407732ND
2014-03-04I1407718ND
2014-03-04I14077286.00 ppb
2014-03-04I1407727ND
2014-03-04I14077265.00 ppb
2014-03-04I1407731ND
2014-03-04I14077303.00 ppb
2014-03-04I14077353.00 ppb
2014-06-05I14203767.00 ppb
2014-06-06I1420556ND
2014-06-06I1420554ND
2014-06-06I1420560ND
2014-06-06I1420558ND
2014-06-06I14205596.00 ppb
2014-06-09I1420777ND
2014-06-09I1420778ND
2014-06-09I14207835.00 ppb
2014-06-09I14207768.00 ppb
2014-06-09I14207798.00 ppb
2014-06-09I14207816.00 ppb
2014-06-09I14207747.00 ppb
2014-06-09I14207824.00 ppb
2014-06-09I1420772ND
2014-06-10I1421072ND
2014-06-10I14210734.00 ppb
2014-06-10I1421071ND
2014-06-10I1421075ND
2014-06-10I1421074ND
2014-06-12I1421492ND
2014-06-12I1421498ND
2014-06-12I1421497ND
2014-06-12I1421494ND
2014-06-17I1422335ND
2014-06-17I1422330ND
2014-06-25I14235286.00 ppb
2014-06-26I1423785ND
2014-06-27I1424004ND
2014-07-01I1424564ND
2014-07-01I1424561ND
2014-07-01I14245605.00 ppb
2014-07-01I14245656.00 ppb
2014-07-08I1425431ND
2014-07-08I1425428ND
2014-07-16I1427068ND
2014-07-16I14270716.00 ppb
2014-07-16I14270699.00 ppb
2014-07-16I1427058ND
2014-07-16I14270704.00 ppb
2014-07-16I14270645.00 ppb
2014-07-17I1427228ND
2014-07-30I1429113ND
2014-07-30I1429112ND
2014-07-30I1429111ND
2014-07-301429110ND
2014-08-05I1429865ND
2014-08-05I14298674.00 ppb
2014-08-05I14298644.00 ppb
2014-08-11IND
2014-08-11I1430896ND
2014-08-19I14322887.00 ppb
2014-08-19I14322874.00 ppb
2014-08-19I14322836.00 ppb
2014-10-02I14391184.00 ppb
2015-03-09I1508860ND
2015-03-09I1508865ND
2015-03-12I1509544ND
2015-05-27I1520479ND
2015-05-28I1520653ND
2015-06-04I1521791ND
2015-06-04I1521779ND
2015-06-09I15225325.00 ppb
2015-06-09I1522529ND
2015-06-09I15225274.00 ppb
2015-06-16I1523454ND
2015-06-16I1523455ND
2015-06-24I15252954.00 ppb
2015-06-24I1525294ND
2015-06-24I15252964.00 ppb
2015-06-24I15253013.00 ppb
2015-06-24I15252938.00 ppb
2015-07-15I15286834.00 ppb
2015-07-15I15286816.00 ppb
2015-07-15I1528669ND
2015-07-15I15286803.00 ppb
2015-07-15I15286826.00 ppb
2015-07-17I15290953.00 ppb
2015-07-17N15290933.00 ppb
2015-07-22I1529742ND
2015-07-22I15297504.00 ppb
2015-07-23I15300074.00 ppb
2015-07-24I15302303.00 ppb
2015-08-06I15326986.00 ppb
2015-12-03I15519704.00 ppb
2016-06-23I16276473.00 ppb
2016-06-24I1627840ND
2016-06-24I16278394.10 ppb
2016-06-27I16281264.10 ppb
2016-06-27I16281242.70 ppb
2016-06-27I16281254.20 ppb
2016-06-27I16281275.00 ppb
2016-06-28I16284402.10 ppb
2016-06-28I1628441ND
2016-06-29I16286553.70 ppb
2016-06-29I16286543.10 ppb
2016-06-29I1628657ND
2016-06-29I16286538.60 ppb
2016-07-07I16297282.40 ppb
2016-07-15I16314345.90 ppb
2016-08-03I16349344.30 ppb
2016-08-03I16349329.80 ppb
2016-08-15I16367727.40 ppb
2016-08-15I16367734.70 ppb
2016-08-25I16385553.50 ppb
2016-10-03I16452305.50 ppb
2017-03-13I17098994.30 ppb
2017-03-13I17099004.90 ppb
2017-03-13I1709901ND
2017-03-14I1710137ND
2017-03-14I1710138ND
2017-03-14I1710138ND
2017-03-14I17101342.20 ppb
2017-03-14I1710137ND
2017-03-14I1710140ND
2017-03-14I1710135ND
2017-05-30I17225812.40 ppb
2017-05-30I17225792.30 ppb
2017-05-30I1722574ND
2017-05-31I17227608.30 ppb
2017-05-31I17227554.50 ppb
2017-05-31I1722752ND
2017-05-31I1722751ND
2017-05-31I1722753ND
2017-05-31I17227594.40 ppb
2017-05-31I1722763ND
2017-05-31I17227625.30 ppb
2017-05-31I1722761ND
2017-05-31I17227586.20 ppb
2017-06-06I17236556.60 ppb
2017-06-06I1723654ND
2017-06-06I17236574.00 ppb
2017-06-06I17236562.70 ppb
2017-06-19I17261113.00 ppb
2017-06-19I17261073.30 ppb
2017-06-19I1726108ND
2017-06-19I1726109ND
2017-06-21I1726722ND
2017-06-21I17267742.20 ppb
2017-06-21I1726775ND
2017-06-21I17267764.70 ppb
2017-06-21I1726777ND
2017-06-21I17267792.50 ppb
2017-06-21I1726781ND
2017-06-21I1726782ND
2017-06-21I17267712.50 ppb
2017-06-22I1726960ND
2017-06-22I1726962ND
2017-06-22I17269664.20 ppb
2017-06-22I172696412.0 ppb
2017-06-26I1727441ND
2017-06-26I17274393.00 ppb
2017-07-10I17298683.60 ppb
2017-07-10I172987515.0 ppb
2017-07-10I17298762.60 ppb
2017-07-10I17298773.90 ppb
2017-07-10I17298678.20 ppb
2017-07-11I1730135ND
2017-07-11I1730137ND
2017-07-13I173078811.0 ppb
2017-07-13I17307894.50 ppb
2017-07-13I17307903.00 ppb
2017-07-17I1731306ND
2017-07-17I17313097.40 ppb
2017-07-19I17319436.40 ppb
2017-07-20I17322216.30 ppb
2017-07-20I17322142.10 ppb
2017-07-20I17322175.80 ppb
2017-07-20I17322153.10 ppb
2017-07-25I17328142.60 ppb
2017-07-25I17328187.00 ppb
2017-07-25I17328113.80 ppb
2017-07-25I1732813ND
2017-08-01I17340833.20 ppb
2017-08-03I1734570ND
2017-08-03I1734567ND
2017-08-03I1734565ND
2017-08-04I17347272.40 ppb
2017-08-07I17351032.80 ppb
2017-08-14I1736475ND
2017-08-14I17364763.30 ppb
2017-08-14I17364774.70 ppb
2017-08-17I17373292.80 ppb
2017-08-18I17375723.30 ppb
2017-08-22I17380343.60 ppb
2017-09-26I17445472.10 ppb
2017-10-24I1749574ND