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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Crescenta Valley CWD

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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90

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.403 ppb3226ND - 1.000 ppb
2014ND110ND
2015ND110ND
2016ND120ND
2017ND120ND
2018ND10ND
2019ND110ND

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
2013-03-20201303200421AM0.990 ppb
2013-03-20201303200395AM0.410 ppb
2013-03-20201303200426AM0.260 ppb
2013-03-20201303200393AM0.490 ppb
2013-03-20201303200412AM0.620 ppb
2013-03-20201303200430AM0.720 ppb
2013-03-20201303200414AM0.500 ppb
2013-03-20201303200370AM0.380 ppb
2013-03-20201303200432AM0.520 ppb
2013-03-20201303200372AM1.000 ppb
2013-03-20201303200374AM0.600 ppb
2013-03-20201303200376AM0.910 ppb
2013-03-20201303200397AMND
2013-03-20201303200391AM0.930 ppb
2013-06-03201306040462AMND
2013-06-04201306040460AM0.360 ppb
2013-09-17201309170927AM0.390 ppb
2013-09-17201309170922AM0.270 ppb
2013-09-17201309170931AM0.270 ppb
2013-09-17201309170853AM0.270 ppb
2013-09-17201309170937AM0.270 ppb
2013-09-17201309170933AM0.460 ppb
2013-09-17201309170916AMND
2013-09-17201309170929AM0.290 ppb
2013-09-17201309170935AM0.350 ppb
2013-09-17201309170832AM0.260 ppb
2013-09-17201309170865AMND
2013-09-17201309170918AM0.440 ppb
2013-09-17201309170925AM0.500 ppb
2013-09-17201309170920AMND
2013-12-10201312100551AM0.420 ppb
2013-12-10201312110520AMND
2014-08-055806-001-1130ND
2014-08-055806-011-0950ND
2014-08-055806-002-1056ND
2014-08-055806-005-1135ND
2014-08-055806-012-1245ND
2014-08-055806-006-1320ND
2014-08-055806-007-1030ND
2014-08-055806-013-1156ND
2014-08-055806-009-1030ND
2014-08-055806-010-1340ND
2014-09-165806-008-0908ND
2015-05-055806-010-1319ND
2015-05-055806-013-1255ND
2015-05-055806-012-1318ND
2015-05-055806-011-1101ND
2015-05-055806-009-1028ND
2015-05-055806-008-1243ND
2015-05-055806-007-1128ND
2015-05-055806-006-1302ND
2015-05-055806-005-1215ND
2015-05-055806-002-1157ND
2015-05-055806-001-1120ND
2016-05-035806-001-1048ND
2016-05-035806-009-1101ND
2016-05-035806-027-1215ND
2016-05-035806-002-1225ND
2016-05-035806-010-1301ND
2016-05-035806-013-1240ND
2016-05-035806-005-1210ND
2016-05-035806-008-1300ND
2016-05-035806-007-1110ND
2016-05-035806-006-1323ND
2016-05-035806-011-1150ND
2016-06-075806-012-1110ND
2017-02-215806-006-1308ND
2017-02-215806-009-1013ND
2017-02-215806-007-1030ND
2017-02-215806-005-1100ND
2017-02-215806-002-1125ND
2017-02-215806-001-1125ND
2017-02-215806-027-0914ND
2017-02-215806-010-1250ND
2017-02-215806-013-0941ND
2017-02-215806-011-1145ND
2017-02-215806-012-1245ND
2017-07-265806-008-0800ND
2018-02-065806-010-1248ND
2019-02-125806-011-0841ND
2019-02-125806-001-1021ND
2019-02-125806-013-1130ND
2019-02-125806-002-0950ND
2019-02-125806-012-1225ND
2019-02-125806-005-1015ND
2019-02-125806-027-1205ND
2019-02-125806-010-1215ND
2019-02-125806-007-1005ND
2019-02-125806-008-1150ND
2019-02-125806-009-0854ND