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EWG's Tap Water Database — 2021 UPDATE

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Arsenic

City of Coeur D Alene

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

 

182

Samples

28

Samples exceeding legal limit (MCL)

171

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20145.92 ppb2826ND - 25.0 ppb
20155.72 ppb1816ND - 22.9 ppb
20165.43 ppb2422ND - 27.8 ppb
20176.27 ppb23231.55 ppb - 22.8 ppb
20185.48 ppb3028ND - 25.0 ppb
20196.36 ppb5957ND - 28.8 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
2014-01-07I1475572.20 ppb
2014-01-07I1475582.80 ppb
2014-01-07I1475593.70 ppb
2014-01-07I1475603.00 ppb
2014-01-27I0127141302.86 ppb
2014-03-07I1487202.60 ppb
2014-03-07I1487211.70 ppb
2014-03-07I1487222.30 ppb
2014-03-07I1487232.80 ppb
2014-05-20I150635ND
2014-05-20I1506361.60 ppb
2014-05-20I1506372.40 ppb
2014-05-20I1506383.20 ppb
2014-06-02I060214991.32 ppb
2014-06-02I060214102ND
2014-06-02I0602141001.66 ppb
2014-07-16I15252910.3 ppb
2014-07-16I15253010.4 ppb
2014-07-16I15253125.0 ppb
2014-07-16I15253324.9 ppb
2014-09-03I1541905.40 ppb
2014-09-03I15419124.0 ppb
2014-09-03I15419311.9 ppb
2014-09-03I1541948.90 ppb
2014-11-18I1566321.90 ppb
2014-11-18I1566332.80 ppb
2014-11-18I1566343.90 ppb
2014-11-18I1566352.20 ppb
2015-01-21I1581001.60 ppb
2015-01-21I158101ND
2015-01-211581023.60 ppb
2015-01-21I1581032.70 ppb
2015-03-18I0318151302.98 ppb
2015-03-18I0318151001.84 ppb
2015-05-14I1609103.70 ppb
2015-05-14I1609113.80 ppb
2015-05-14I1609127.90 ppb
2015-05-14I1609146.90 ppb
2015-08-20I16384718.8 ppb
2015-08-20I16384810.00 ppb
2015-08-20I1638509.80 ppb
2015-08-20I16385122.9 ppb
2015-12-01I167034ND
2015-12-01I1670351.60 ppb
2015-12-01I1670362.60 ppb
2015-12-01I1670372.30 ppb
2016-01-25I1682261.90 ppb
2016-01-25I1682271.60 ppb
2016-01-25I168228ND
2016-01-25I168229ND
2016-03-03I1691653.30 ppb
2016-03-03I169166`3.70 ppb
2016-03-03I1691673.40 ppb
2016-03-03I1691682.70 ppb
2016-05-02I1706223.60 ppb
2016-05-03I1706623.70 ppb
2016-06-06I17167027.8 ppb
2016-06-06I1716715.00 ppb
2016-06-06I1716723.60 ppb
2016-06-06I1716733.10 ppb
2016-06-07I1716929.80 ppb
2016-06-28I1723673.30 ppb
2016-09-16I1756333.80 ppb
2016-09-16I17563418.0 ppb
2016-09-16I17563519.0 ppb
2016-09-16I1756374.10 ppb
2016-11-01I1771822.40 ppb
2016-11-01I1771832.20 ppb
2016-11-01I1771842.00 ppb
2016-11-01I1771852.20 ppb
2017-01-20I1791173.10 ppb
2017-01-20I1791182.60 ppb
2017-01-20I1791193.40 ppb
2017-01-20I1791204.20 ppb
2017-03-15I1703150530021001.55 ppb
2017-03-15I1703150530031302.63 ppb
2017-04-05I1809222.80 ppb
2017-04-05I1809232.90 ppb
2017-04-05I1809242.40 ppb
2017-04-05I1809252.10 ppb
2017-06-23I1833998.60 ppb
2017-06-23I1834006.20 ppb
2017-06-23I18340110.4 ppb
2017-06-23I1834026.50 ppb
2017-06-271835016.40 ppb
2017-08-10I18531110.6 ppb
2017-08-10I18531222.2 ppb
2017-08-10I18531422.8 ppb
2017-08-10I18531611.3 ppb
2017-11-16I1886003.40 ppb
2017-11-16I1886013.70 ppb
2017-11-16I1886031.80 ppb
2017-11-16I1886022.70 ppb
2018-01-04I1897524.60 ppb
2018-01-04I1897534.50 ppb
2018-01-04I1897541.50 ppb
2018-01-04I1897551.40 ppb
2018-03-14I1803140530021.58 ppb
2018-03-14I1803140530031.99 ppb
2018-03-27I1917662.40 ppb
2018-03-27I1917672.00 ppb
2018-03-27I1917683.10 ppb
2018-03-27I1917692.90 ppb
2018-06-21I19449825.0 ppb
2018-06-21I1945006.40 ppb
2018-06-21I1645019.00 ppb
2018-06-21I1945033.30 ppb
2018-09-06I19713610.00 ppb
2018-09-06I19713710.00 ppb
2018-09-06I19713823.0 ppb
2018-09-06I19714022.0 ppb
2018-10-10I1985004.60 ppb
2018-10-10I1985014.50 ppb
2018-10-10I1985022.70 ppb
2018-10-10I1985032.50 ppb
2018-11-01I1991053.60 ppb
2018-11-01I1991062.10 ppb
2018-11-01I199107ND
2018-11-01I199108ND
2018-12-06I1999943.40 ppb
2018-12-06I1999953.00 ppb
2018-12-06I1999961.90 ppb
2018-12-06I1999971.40 ppb
2019-01-03I2005142.00 ppb
2019-01-03I2005152.10 ppb
2019-01-03I2005163.00 ppb
2019-01-03I2005173.80 ppb
2019-02-06I2013214.60 ppb
2019-02-06I2013223.20 ppb
2019-02-06I2013233.00 ppb
2019-02-06I2013242.80 ppb
2019-03-12I2020152.40 ppb
2019-03-12I2020161.70 ppb
2019-03-12I20201710.00 ppb
2019-03-12I2020181.50 ppb
2019-03-13I1903130550022.33 ppb
2019-04-02I2025872.70 ppb
2019-04-02I2025882.40 ppb
2019-04-02I2025893.10 ppb
2019-04-02I2025903.80 ppb
2019-05-01I2034424.20 ppb
2019-05-01I2034433.70 ppb
2019-05-01I2034443.70 ppb
2019-05-01I2034452.20 ppb
2019-05-23I2041864.10 ppb
2019-05-23I2041895.10 ppb
2019-05-23I2041875.40 ppb
2019-05-29I2042881.60 ppb
2019-05-29I2042871.80 ppb
2019-05-29I20429110.00 ppb
2019-06-03I2043623.10 ppb
2019-06-03I204360ND
2019-06-03I20436128.8 ppb
2019-06-03I2043633.10 ppb
2019-06-07I2043552.20 ppb
2019-06-07I20435622.4 ppb
2019-06-07I20435728.1 ppb
2019-06-07I2043582.60 ppb
2019-07-02I20563519.9 ppb
2019-07-02I20563618.6 ppb
2019-07-02I2056372.80 ppb
2019-07-02I2056382.20 ppb
2019-08-08I20705623.2 ppb
2019-08-08I20705821.5 ppb
2019-08-08I2070607.90 ppb
2019-08-08I2070617.80 ppb
2019-09-05I20821923.5 ppb
2019-09-05I20822124.6 ppb
2019-09-05I2082230 ppb
2019-09-05I2082242.50 ppb
2019-10-07I2096696.80 ppb
2019-10-07I2096701.90 ppb
2019-10-07I2096714.10 ppb
2019-10-07I2096724.30 ppb
2019-11-05I210619ND
2019-11-05I2106201.70 ppb
2019-11-05I2106213.60 ppb
2019-11-05I2106222.90 ppb
2019-12-05I2116242.80 ppb
2019-12-05I2116252.70 ppb
2019-12-05I2116261.60 ppb
2019-12-05I2116271.70 ppb