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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Municipality of Anchorage

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

 

84

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.978 ppb119ND - 1.64 ppb
20130.606 ppb127ND - 1.27 ppb
20140.422 ppb21ND - 0.844 ppb
20150.646 ppb3827ND - 1.76 ppb
20160.136 ppb111ND - 1.50 ppb
20170.410 ppb104ND - 1.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2012-07-19CG*A1207321-01DND
2012-11-28CG*A1211347-01D0.716 ppb
2012-11-28CG*A1211347-10DND
2012-11-28CG*A1211347-09D0.751 ppb
2012-11-28CG*A1211347-08D1.25 ppb
2012-11-28CG*A1211347-07D1.64 ppb
2012-11-28CG*A1211347-06D1.25 ppb
2012-11-28CG*A1211347-05D1.52 ppb
2012-11-28CG*A1211347-04D1.06 ppb
2012-11-28CG*A1211347-03D1.30 ppb
2012-11-28CG*A1211347-02D1.27 ppb
2013-04-04CG*A1304163-01CND
2013-09-24CG*A1309437-01BND
2013-10-25CG*A1310536-01B0.848 ppb
2013-10-25CG*A1310536-02B1.27 ppb
2013-10-25CG*A1310536-03B0.735 ppb
2013-10-25CG*A1310536-04B1.20 ppb
2013-10-25CG*A1310536-05BND
2013-10-31CG*A1310614-01BND
2013-10-31CG*A1310614-04BND
2013-10-31CG*A1310614-02B0.884 ppb
2013-10-31CG*A1310614-03B1.16 ppb
2013-11-08CG*A1311145-01B1.18 ppb
2014-05-13CG*A1405164-01D0.844 ppb
2014-09-09CG*A1409133-01BND
2015-01-12CG*A1501154-01D1.76 ppb
2015-03-023198474ND
2015-03-0231982961.10 ppb
2015-03-023198284ND
2015-03-023198254ND
2015-03-0231982660.500 ppb
2015-03-0331994900.500 ppb
2015-03-0331995381.40 ppb
2015-03-0331995120.900 ppb
2015-03-0331995800.900 ppb
2015-03-0331995010.500 ppb
2015-03-0331995691.000 ppb
2015-03-1332069940.800 ppb
2015-03-1332069760.800 ppb
2015-06-123262422ND
2015-06-1232624260.200 ppb
2015-06-2432696690.300 ppb
2015-08-18CG*3306156ND
2015-08-18CG*33062171.60 ppb
2015-08-18CG*33062160.900 ppb
2015-08-18CG*33062151.10 ppb
2015-08-18CG*3306214ND
2015-08-19CG*3308380ND
2015-08-20CG*33087131.000 ppb
2015-08-20CG*33087151.20 ppb
2015-08-20CG*3308717ND
2015-08-20CG*3308719ND
2015-09-1633248400.300 ppb
2015-09-1633248241.40 ppb
2015-09-1633249080.900 ppb
2015-09-1633248591.000 ppb
2015-09-1633248931.000 ppb
2015-09-163324804ND
2015-09-23CG*33298511.40 ppb
2015-10-30CG*33520001.60 ppb
2015-12-153375767ND
2015-12-1533758160.300 ppb
2015-12-1533757750.200 ppb
2016-07-13CG*280-85692-1ND
2016-07-13CG*280-85692-2ND
2016-07-13CG*280-85692-4ND
2016-07-18CG*280-85921-1ND
2016-07-18CG*280-85921-2ND
2016-07-19CG*280-85945-1ND
2016-08-02CG*280-86590-1ND
2016-08-02CG*280-86589-1ND
2016-08-29CG*3537235ND
2016-08-29CG*35372341.50 ppb
2016-11-08CG*3584825ND
2017-08-21CG*3766069ND
2017-08-21CG*37660631.20 ppb
2017-08-21CG*3765074ND
2017-08-28CG*37688721.10 ppb
2017-08-28CG*37689040.900 ppb
2017-08-28CG*3768896ND
2017-08-28CG*37688800.900 ppb
2017-08-29CG*3769505ND
2017-10-02CG*3792411ND
2017-10-31CG*440-195632-1ND