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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Cal-water Service Company - Marysville

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.

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166

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20131.13 ppb65ND - 2.20 ppb
20142.88 ppb4844ND - 6.36 ppb
20153.86 ppb3827ND - 10.8 ppb
20161.06 ppb333ND - 12.5 ppb
2017ND150ND
20182.11 ppb163ND - 12.2 ppb
20191.06 ppb101ND - 10.6 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
2013-08-06201308070465AM1.30 ppb
2013-08-06201308070408AM1.40 ppb
2013-08-06201308070401AM0.910 ppb
2013-08-06201308070476AM0.970 ppb
2013-08-12201308130201AM2.20 ppb
2013-08-14201308150249AMND
2014-02-11201402120592AM0.950 ppb
2014-02-11201402120455AM1.50 ppb
2014-02-11201402120398AM0.810 ppb
2014-02-11201402120578AM1.10 ppb
2014-02-12201402130453AM2.90 ppb
2014-02-25201402260629AMND
2014-02-25201402260647AM0.830 ppb
2014-04-08201404090521AM0.670 ppb
2014-04-08201404090610AM0.860 ppb
2014-04-08201404090532AM0.850 ppb
2014-05-035701-019-15491.83 ppb
2014-05-045701-011-08194.38 ppb
2014-05-045701-015-11223.32 ppb
2014-05-045701-018-15592.84 ppb
2014-05-045701-020-11263.28 ppb
2014-05-195810-011-1320ND
2014-06-025701-011-08394.80 ppb
2014-06-025701-015-08223.66 ppb
2014-06-025701-020-08244.19 ppb
2014-06-035701-018-08503.53 ppb
2014-06-035701-019-10082.22 ppb
2014-07-075701-009-11454.42 ppb
2014-07-075701-011-08336.36 ppb
2014-07-075701-012-09482.72 ppb
2014-07-075701-015-13494.01 ppb
2014-07-075701-016-14153.79 ppb
2014-07-075701-018-14173.92 ppb
2014-07-075701-019-09493.00 ppb
2014-07-075701-020-13474.45 ppb
2014-08-025701-011-09533.21 ppb
2014-09-075701-011-08404.96 ppb
2014-09-075701-015-08144.11 ppb
2014-09-075701-018-11043.53 ppb
2014-09-075701-019-11392.26 ppb
2014-09-075701-020-08153.87 ppb
2014-10-015701-009-10503.89 ppb
2014-10-025701-016-12053.23 ppb
2014-10-025701-018-12063.37 ppb
2014-10-035701-015-10493.78 ppb
2014-10-035701-020-10503.74 ppb
2014-10-045701-019-14212.87 ppb
2014-10-065701-011-09215.77 ppb
2014-10-125701-011-08294.47 ppb
2014-10-145810-013-1318ND
2014-10-20201410210275AM1.60 ppb
2014-10-275701-011-09245.37 ppb
2014-10-28201410290286AM1.10 ppb
2014-11-175810-008-1318ND
2015-01-125810-009-1329ND
2015-01-125701-009-13343.70 ppb
2015-01-125701-012-13572.54 ppb
2015-01-125810-012-1414ND
2015-01-125701-019-13582.49 ppb
2015-01-135701-011-10165.23 ppb
2015-01-135701-015-13084.38 ppb
2015-01-135701-016-15353.70 ppb
2015-01-135701-018-15363.64 ppb
2015-01-135701-020-13094.35 ppb
2015-01-135701-023-10173.71 ppb
2015-02-025701-011-09372.84 ppb
2015-02-025701-015-10552.83 ppb
2015-02-025701-018-13292.35 ppb
2015-02-025701-020-10592.77 ppb
2015-02-025701-023-09391.87 ppb
2015-02-035701-019-13331.32 ppb
2015-04-015701-015-13568.33 ppb
2015-04-015701-020-15588.42 ppb
2015-04-025701-011-153210.8 ppb
2015-04-025701-012-15145.99 ppb
2015-04-025701-019-15155.05 ppb
2015-04-025701-023-15349.95 ppb
2015-04-035701-009-09077.34 ppb
2015-04-065810-010-1310ND
2015-06-015701-011-08378.96 ppb
2015-06-015701-015-13028.96 ppb
2015-06-015701-018-10059.14 ppb
2015-06-015701-019-13035.84 ppb
2015-08-195810-015-1053ND
2015-09-065701-019-1601ND
2015-09-075701-011-0913ND
2015-09-075701-015-1607ND
2015-09-075701-020-1608ND
2015-09-075701-023-0910ND
2015-12-015701-011-131110.3 ppb
2015-12-015701-018-1543ND
2015-12-015701-023-1312ND
2016-02-095701-011-111311.2 ppb
2016-02-095701-018-1347ND
2016-02-095701-023-1111ND
2016-02-165810-016-1429ND
2016-03-025701-011-1003ND
2016-03-025701-018-1257ND
2016-03-025701-023-1001ND
2016-03-075810-011-1306ND
2016-04-055701-009-0830ND
2016-04-055701-011-0843ND
2016-04-055701-013-1006ND
2016-04-055701-016-1017ND
2016-04-055701-018-1019ND
2016-04-055701-023-0840ND
2016-05-025701-018-1124ND
2016-05-025701-023-0847ND
2016-06-095701-008-0935ND
2016-06-095701-009-1002ND
2016-06-225701-011-1157ND
2016-06-225701-015-1343ND
2016-06-225701-018-0925ND
2016-06-225701-019-1620ND
2016-06-225701-020-1345ND
2016-06-225701-023-1159ND
2016-07-055701-020-1313ND
2016-07-055701-023-1338ND
2016-07-065701-018-1008ND
2016-08-085701-011-085912.5 ppb
2016-08-085701-015-1413ND
2016-08-085701-018-1138ND
2016-08-085701-023-090111.1 ppb
2016-08-095701-019-0950ND
2016-12-205810-008-1305ND
2017-01-055701-009-1554ND
2017-01-055701-011-1011ND
2017-01-055701-016-1317ND
2017-01-055701-018-1319ND
2017-01-055701-023-1013ND
2017-02-025701-011-0946ND
2017-02-025701-018-1206ND
2017-02-025701-023-0948ND
2017-03-225810-013-1401ND
2017-04-055701-009-1005ND
2017-04-055701-011-1400ND
2017-04-055701-013-1021ND
2017-04-055701-016-1339ND
2017-04-055701-018-1341ND
2017-04-055701-023-1402ND
2018-01-145701-015-1440ND
2018-01-155701-012-1526ND
2018-01-175810-009-1400ND
2018-02-055701-018-1411ND
2018-02-055701-023-1122ND
2018-03-135701-011-130812.2 ppb
2018-03-135701-018-1450ND
2018-03-135701-023-131411.2 ppb
2018-04-095701-016-1441ND
2018-04-095701-018-1444ND
2018-04-095701-023-100910.4 ppb
2018-04-105701-013-1300ND
2018-04-175810-010-1316ND
2018-05-155810-012-1433ND
2018-08-075810-015-1355ND
2018-08-135701-011-1109ND
2019-02-135810-016-1035ND
2019-03-195810-011-1316ND
2019-03-195701-011-1324ND
2019-03-195701-023-1326ND
2019-03-205701-018-1036ND
2019-04-085701-016-0940ND
2019-04-085701-018-0941ND
2019-04-085701-023-141910.6 ppb
2019-04-095701-009-1451ND
2019-04-095701-013-1701ND