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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

City of Corona

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.

 

211

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.242 ppb264ND - 1.80 ppb
20130.145 ppb478ND - 1.70 ppb
20140.0599 ppb6913ND - 0.520 ppb
2015ND260ND
2016ND220ND
2017ND210ND

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
2012-01-054790-062-1040ND
2012-03-064790-062-1005ND
2012-06-124790-062-1330ND
2012-06-134790-003-11451.40 ppb
2012-06-134790-013-1115ND
2012-06-134790-022-10301.40 ppb
2012-06-134790-023-12301.70 ppb
2012-06-134790-030-1200ND
2012-06-134790-033-1300ND
2012-06-204790-014-1550ND
2012-06-204790-015-1450ND
2012-06-204790-027-0930ND
2012-06-204790-032-1035ND
2012-06-204790-038-1310ND
2012-06-214790-019-0950ND
2012-06-214790-034-1300ND
2012-06-214790-043-1220ND
2012-06-214790-052-1040ND
2012-06-224790-039-0730ND
2012-06-274790-024-0930ND
2012-06-274790-029-1400ND
2012-06-274790-031-1450ND
2012-06-274790-054-1120ND
2012-06-274790-056-1030ND
2012-09-054790-062-1055ND
2012-12-044790-055-09001.80 ppb
2013-01-094790-062-1215ND
2013-02-064790-021-0930ND
2013-02-064790-027-13301.20 ppb
2013-02-064790-030-1130ND
2013-02-064790-039-1130ND
2013-02-134790-052-1510ND
2013-02-134790-054-1350ND
2013-05-014790-024-1230ND
2013-05-014790-038-1050ND
2013-05-014790-055-12451.30 ppb
2013-05-084790-003-1440ND
2013-05-084790-022-14001.70 ppb
2013-05-084790-023-0910ND
2013-05-164790-019-1340ND
2013-05-164790-034-0915ND
2013-05-164790-043-10501.60 ppb
2013-06-114790-062-1345ND
2013-06-264790-028-0900ND
2013-08-079590-032-0940ND
2013-08-159590-033-0900ND
2013-08-159590-056-1435ND
2013-08-219590-029-1002ND
2013-08-229590-013-0940ND
2013-08-229590-014-1500ND
2013-08-229590-015-1402ND
2013-08-229590-031-0825ND
2013-09-109590-062-1330ND
2013-10-09201310100250AMND
2013-10-09201310100244AM0.240 ppb
2013-10-09201310100246AM0.240 ppb
2013-10-09201310100248AMND
2013-10-09201310100242AM0.280 ppb
2013-10-09201310100240AMND
2013-10-09201310100236AMND
2013-10-09201310100238AMND
2013-10-09201310100234AMND
2013-10-23201310240256AMND
2013-10-23201310240260AMND
2013-10-23201310240258AMND
2013-10-23201310240248AMND
2013-10-23201310240250AMND
2013-10-23201310240254AMND
2013-10-23201310240246AM0.250 ppb
2013-10-23201310240240AMND
2013-10-23201310240242AMND
2013-10-23201310240244AMND
2013-10-23201310240252AMND
2014-01-079590-062-1330ND
2014-01-15201401150777AMND
2014-01-15201401150779AM0.370 ppb
2014-01-15201401150775AMND
2014-01-15201401150769AMND
2014-01-15201401150773AM0.520 ppb
2014-01-15201401150771AMND
2014-01-16201401170064AM0.310 ppb
2014-01-16201401170062AM0.240 ppb
2014-01-16201401170066AM0.320 ppb
2014-01-16201401170060AM0.250 ppb
2014-02-129590-021-0900ND
2014-02-129590-027-1020ND
2014-02-129590-028-1450ND
2014-02-129590-039-1100ND
2014-02-129590-052-1145ND
2014-02-129590-054-1355ND
2014-02-269590-030-0730ND
2014-03-259590-062-1455ND
2014-04-09201404090859AMND
2014-04-09201404090857AMND
2014-04-09201404090855AMND
2014-04-09201404090853AMND
2014-04-09201404090851AMND
2014-04-09201404090849AMND
2014-04-17201404180156AM0.340 ppb
2014-04-17201404180152AMND
2014-04-17201404180154AMND
2014-04-17201404180150AM0.250 ppb
2014-04-17201404180158AMND
2014-04-17201404180148AM0.260 ppb
2014-04-22201404220791AMND
2014-04-22201404220789AMND
2014-04-24201404240703AMND
2014-04-24201404240695AMND
2014-04-24201404240701AMND
2014-04-24201404240699AMND
2014-04-24201404240697AMND
2014-04-24201404240693AMND
2014-05-149590-024-1325ND
2014-05-149590-038-1035ND
2014-05-149590-043-0915ND
2014-05-149590-055-1145ND
2014-05-159590-019-1155ND
2014-05-159590-022-0850ND
2014-05-159590-023-1005ND
2014-05-159590-034-1500ND
2014-06-179590-062-1340ND
2014-07-10201407100764AM0.350 ppb
2014-07-10201407100766AM0.240 ppb
2014-07-10201407100756AMND
2014-07-10201407100762AMND
2014-07-10201407100758AM0.320 ppb
2014-07-10201407100760AM0.360 ppb
2014-07-15201407150795AMND
2014-07-15201407150793AMND
2014-07-15201407150797AMND
2014-07-15201407150791AMND
2014-07-249590-055-0830ND
2014-08-139590-015-0930ND
2014-08-139590-031-1455ND
2014-08-139590-032-1100ND
2014-08-139590-033-1315ND
2014-08-219590-029-0900ND
2014-08-269590-003-1400ND
2014-08-279590-014-1315ND
2014-08-279590-056-1415ND
2014-08-289590-013-1030ND
2014-09-169590-062-0830ND
2015-02-039590-030-1000ND
2015-02-129590-027-0900ND
2015-02-129590-028-1420ND
2015-02-129590-030-0810ND
2015-02-129590-039-0950ND
2015-02-129590-052-1330ND
2015-03-129590-062-1100ND
2015-05-289590-003-0940ND
2015-05-289590-019-1045ND
2015-05-289590-024-0930ND
2015-05-289590-034-0830ND
2015-05-289590-038-1000ND
2015-05-289590-043-1100ND
2015-06-189590-062-1245ND
2015-08-129590-029-0900ND
2015-08-129590-031-1020ND
2015-08-129590-032-1100ND
2015-08-129590-056-0940ND
2015-08-209590-013-0900ND
2015-08-209590-014-1430ND
2015-08-209590-015-1130ND
2015-08-209590-033-0950ND
2015-09-019590-062-1100ND
2015-10-149590-023-0930ND
2015-10-149590-054-1330ND
2015-12-089590-062-1410ND
2016-03-229590-062-1215ND
2016-04-139590-027-0950ND
2016-04-139590-028-0800ND
2016-04-139590-030-0850ND
2016-04-219590-054-1340ND
2016-06-149590-062-1430ND
2016-07-209590-039-1045ND
2016-08-189590-003-1000ND
2016-08-189590-023-1050ND
2016-08-189590-038-1400ND
2016-08-239590-024-1430ND
2016-08-249590-019-1030ND
2016-08-249590-034-0900ND
2016-08-249590-043-1430ND
2016-09-139590-062-1020ND
2016-10-119590-031-1530ND
2016-10-129590-032-1430ND
2016-10-209590-029-1400ND
2016-10-279590-014-0915ND
2016-10-279590-015-1020ND
2016-10-279590-033-1400ND
2016-10-279590-056-0840ND
2017-01-129590-062-1520ND
2017-03-219590-062-1540ND
2017-04-129590-030-1000ND
2017-04-129590-054-1400ND
2017-04-209590-027-1400ND
2017-04-209590-038-0920ND
2017-04-209590-039-1500ND
2017-06-069590-062-1550ND
2017-08-099590-019-1030ND
2017-08-099590-023-0945ND
2017-08-099590-024-1400ND
2017-08-099590-043-1530ND
2017-08-109590-034-1220ND
2017-09-199590-062-1500ND
2017-10-129590-015-1500ND
2017-10-129590-031-0930ND
2017-10-129590-032-1030ND
2017-10-199590-014-1030ND
2017-10-199590-029-1500ND
2017-10-199590-056-1400ND
2017-10-269590-033-1000ND