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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

City of Corona

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

MORE ABOUT THIS CONTAMINANT

 

282

Samples

0

Samples exceeding legal limit (MCL)

105

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.133 ppb20200.0300 ppb - 0.270 ppb
20140.237 ppb9146ND - 5.00 ppb
2015ND370ND - 1.90 ppb
20160.384 ppb328ND - 2.00 ppb
20170.447 ppb328ND - 2.80 ppb
20180.447 ppb3610ND - 1.90 ppb
20190.588 ppb3413ND - 1.90 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) 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.

ppb = parts per billion

All test results

Date Lab ID Result
2013-10-09201310100250AM0.150 ppb
2013-10-09201310100246AM0.200 ppb
2013-10-09201310100248AM0.150 ppb
2013-10-09201310100244AM0.200 ppb
2013-10-09201310100242AM0.250 ppb
2013-10-09201310100236AM0.110 ppb
2013-10-09201310100240AM0.120 ppb
2013-10-09201310100234AM0.1000 ppb
2013-10-09201310100238AM0.110 ppb
2013-10-23201310240256AM0.120 ppb
2013-10-23201310240260AM0.140 ppb
2013-10-23201310240258AM0.140 ppb
2013-10-23201310240250AM0.0560 ppb
2013-10-23201310240248AM0.140 ppb
2013-10-23201310240254AM0.0330 ppb
2013-10-23201310240246AM0.270 ppb
2013-10-23201310240240AM0.170 ppb
2013-10-23201310240242AM0.0300 ppb
2013-10-23201310240244AM0.120 ppb
2013-10-23201310240252AM0.0420 ppb
2014-01-099590-054-1500ND
2014-01-15201401150779AM0.360 ppb
2014-01-15201401150777AM0.0600 ppb
2014-01-15201401150775AMND
2014-01-15201401150769AM0.0490 ppb
2014-01-15201401150773AM0.430 ppb
2014-01-15201401150771AMND
2014-01-16201401170064AM0.340 ppb
2014-01-16201401170062AM0.250 ppb
2014-01-16201401170066AM0.340 ppb
2014-01-16201401170060AM0.250 ppb
2014-03-129590-021-13591.10 ppb
2014-03-129590-024-1320ND
2014-03-129590-030-1451ND
2014-03-129590-031-14271.30 ppb
2014-03-129590-052-1300ND
2014-03-129590-054-1245ND
2014-04-09201404090859AM0.0790 ppb
2014-04-09201404090857AM0.120 ppb
2014-04-09201404090855AM0.110 ppb
2014-04-09201404090853AM0.0580 ppb
2014-04-09201404090851AM0.0580 ppb
2014-04-09201404090849AM0.0590 ppb
2014-04-17201404180156AM0.300 ppb
2014-04-17201404180154AM0.0680 ppb
2014-04-17201404180152AM0.0670 ppb
2014-04-17201404180158AM0.1000 ppb
2014-04-17201404180150AM0.250 ppb
2014-04-17201404180148AM0.0680 ppb
2014-04-22201404220791AM0.0900 ppb
2014-04-22201404220789AM0.110 ppb
2014-04-24201404240701AM0.0400 ppb
2014-04-24201404240695AM0.0680 ppb
2014-04-24201404240703AM0.140 ppb
2014-04-24201404240699AM0.0310 ppb
2014-04-24201404240697AM0.0330 ppb
2014-04-24201404240693AMND
2014-05-149590-033-14455.00 ppb
2014-05-219590-033-10501.20 ppb
2014-06-119590-024-1031ND
2014-06-119590-030-0915ND
2014-06-119590-031-09481.90 ppb
2014-06-119590-052-1103ND
2014-06-119590-054-1315ND
2014-06-259590-033-1050ND
2014-07-10201407100766AM0.200 ppb
2014-07-10201407100764AM0.340 ppb
2014-07-10201407100756AM0.120 ppb
2014-07-10201407100762AM0.140 ppb
2014-07-10201407100758AM0.270 ppb
2014-07-10201407100760AM0.130 ppb
2014-07-15201407150795AM0.0490 ppb
2014-07-15201407150797AM0.120 ppb
2014-07-15201407150793AM0.0370 ppb
2014-07-15201407150791AM0.0400 ppb
2014-07-249590-019-0938ND
2014-07-249590-022-1035ND
2014-07-249590-023-1000ND
2014-07-249590-024-0844ND
2014-07-249590-027-08501.20 ppb
2014-07-249590-028-1121ND
2014-07-249590-030-1100ND
2014-07-249590-034-0752ND
2014-07-249590-038-0906ND
2014-07-249590-039-0817ND
2014-07-249590-043-0919ND
2014-07-249590-052-0810ND
2014-07-249590-054-1111ND
2014-07-249590-055-0830ND
2014-08-139590-015-0930ND
2014-08-139590-031-14551.40 ppb
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
2014-09-109590-024-0810ND
2014-09-109590-030-0900ND
2014-09-109590-031-08401.50 ppb
2014-09-109590-033-0850ND
2014-09-109590-052-0730ND
2014-09-109590-054-1415ND
2014-09-169590-062-0830ND
2014-09-309590-049-1350ND
2014-12-109590-030-1030ND
2014-12-109590-031-10501.60 ppb
2014-12-109590-033-1040ND
2014-12-109590-052-0950ND
2014-12-169590-024-1150ND
2015-02-039590-030-1000ND
2015-02-129590-028-1420ND
2015-02-129590-030-0810ND
2015-02-129590-039-0950ND
2015-02-129590-052-1330ND
2015-03-119590-024-1120ND
2015-03-119590-030-1330ND
2015-03-129590-062-1100ND
2015-04-089590-052-1000ND
2015-04-159590-054-1122ND
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
2015-06-01ND*
2015-06-109590-024-1030ND
2015-06-109590-030-0940ND
2015-06-109590-054-1410ND
2015-06-189590-062-1245ND
2015-08-129590-029-0900ND
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
2015-09-019590-062-1100ND
2015-09-169590-024-1250ND
2015-09-169590-030-1330ND
2015-09-179590-054-1400ND
2015-10-149590-023-0930ND
2015-10-149590-049-1010ND
2015-12-089590-062-1410ND
2015-12-099590-024-1000ND
2015-12-099590-030-0915ND
2015-12-099590-054-1045ND
2016-03-029590-024-1100ND
2016-03-029590-030-10001.10 ppb
2016-03-029590-031-10252.00 ppb
2016-03-029590-033-10151.40 ppb
2016-03-029590-054-1220ND
2016-03-229590-062-1215ND
2016-04-139590-027-09501.50 ppb
2016-04-139590-028-0800ND
2016-06-019590-024-1340ND
2016-06-019590-030-1250ND
2016-06-019590-033-13001.40 ppb
2016-06-019590-054-1530ND
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
2016-08-249590-019-1030ND
2016-08-249590-034-0900ND
2016-08-249590-043-1430ND
2016-09-139590-062-1020ND
2016-10-129590-032-1430ND
2016-10-209590-029-1400ND
2016-10-209590-049-0955ND
2016-10-279590-014-0915ND
2016-10-279590-015-1020ND
2016-10-279590-033-14001.50 ppb
2016-10-279590-056-0840ND
2016-12-079590-024-1520ND
2016-12-079590-030-1420ND
2016-12-079590-031-14402.00 ppb
2016-12-079590-033-14301.40 ppb
2017-01-109590-054-1610ND
2017-01-129590-062-1520ND
2017-03-089590-024-1450ND
2017-03-089590-030-1400ND
2017-03-089590-031-14152.10 ppb
2017-03-089590-033-13501.50 ppb
2017-03-089590-054-1100ND
2017-03-219590-062-1540ND
2017-04-209590-027-14001.30 ppb
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
2017-09-069590-024-1140ND
2017-09-069590-031-11051.80 ppb
2017-09-069590-033-10501.60 ppb
2017-09-069590-054-1550ND
2017-09-199590-062-1500ND
2017-10-129590-015-1500ND
2017-10-129590-032-1030ND
2017-10-199590-014-1030ND
2017-10-199590-029-1500ND
2017-10-199590-056-1400ND
2017-12-069590-024-1310ND
2017-12-069590-030-12202.80 ppb
2017-12-069590-031-12301.70 ppb
2017-12-069590-033-12101.50 ppb
2017-12-069590-049-0850ND
2018-02-149590-032-1445ND
2018-03-079590-024-1130ND
2018-03-079590-030-1000ND
2018-03-079590-031-10401.90 ppb
2018-03-079590-033-10201.30 ppb
2018-04-189590-039-1600ND
2018-04-269590-027-12301.40 ppb
2018-04-269590-038-1020ND
2018-06-209590-021-10001.80 ppb
2018-06-209590-024-1050ND
2018-06-209590-030-0900ND
2018-06-209590-031-09401.80 ppb
2018-06-209590-033-0920ND
2018-08-169590-024-1100ND
2018-08-169590-055-1400ND
2018-08-229590-019-1500ND
2018-08-229590-034-0900ND
2018-08-229590-043-1030ND
2018-09-199590-021-08501.60 ppb
2018-09-199590-024-1130ND
2018-09-199590-030-1100ND
2018-09-199590-031-10001.50 ppb
2018-09-199590-033-1040ND
2018-10-109590-029-1500ND
2018-10-109590-031-11001.50 ppb
2018-10-129590-014-1000ND
2018-10-179590-049-0915ND
2018-10-259590-033-1530ND
2018-10-319590-056-0940ND
2018-11-089590-015-1230ND
2018-11-159590-071-1500ND
2018-12-129590-021-13501.80 ppb
2018-12-129590-024-1230ND
2018-12-129590-030-1520ND
2018-12-129590-031-14301.50 ppb
2018-12-129590-033-1450ND
2019-02-139590-029-1000ND
2019-02-139590-056-0900ND
2019-02-149590-032-1330ND
2019-03-139590-021-13401.90 ppb
2019-03-139590-024-1430ND
2019-03-139590-030-0820ND
2019-03-139590-031-07401.70 ppb
2019-03-139590-033-08001.000 ppb
2019-04-249590-015-0910ND
2019-05-229590-014-1030ND
2019-05-229590-039-1530ND
2019-05-229590-055-1450ND
2019-06-129590-021-15401.80 ppb
2019-06-129590-024-1455ND
2019-06-129590-030-0850ND
2019-06-129590-031-09201.80 ppb
2019-06-129590-033-08301.20 ppb
2019-06-279590-027-0945ND
2019-09-189590-021-10201.80 ppb
2019-09-189590-024-0940ND
2019-09-189590-030-1125ND
2019-09-189590-031-10501.60 ppb
2019-09-269590-038-0810ND
2019-10-099590-019-1030ND
2019-10-099590-034-0718ND
2019-10-099590-043-0918ND
2019-10-099590-072-11501.30 ppb
2019-10-159590-033-08351.20 ppb
2019-10-169590-049-1550ND
2019-12-189590-021-14251.80 ppb
2019-12-189590-024-0725ND
2019-12-189590-030-1525ND
2019-12-189590-031-14501.80 ppb
2019-12-189590-033-15051.10 ppb

* Sample result is taken from the system's CCR report.