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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Los Angeles Department of Water and Power

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).

 

344

Samples

0

Samples exceeding legal limit (MCL)

215

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.34 ppb1610ND - 6.89 ppb
20130.494 ppb6959ND - 3.26 ppb
20141.04 ppb5041ND - 2.82 ppb
20151.02 ppb7049ND - 2.92 ppb
20160.931 ppb6945ND - 3.11 ppb
20170.515 ppb7011ND - 4.60 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
2012-02-021200-133-1000ND
2012-02-141200-011-1020ND
2012-02-241200-159-09553.20 ppb
2012-03-201200-159-11003.30 ppb
2012-04-261200-159-09403.13 ppb
2012-05-171200-011-0900ND
2012-05-211200-159-09553.44 ppb
2012-05-221200-133-10451.19 ppb
2012-06-271200-159-11154.26 ppb
2012-07-231200-159-10006.89 ppb
2012-08-221200-011-1030ND
2012-08-221200-133-13451.25 ppb
2012-08-291200-159-07555.11 ppb
2012-10-041200-159-11305.66 ppb
2012-11-131200-011-1035ND
2012-11-131200-133-0840ND
2013-02-201200-133-1200ND
2013-03-201200-011-1050ND
2013-03-251200-159-14001.84 ppb
2013-04-09AW066640.112 ppb
2013-04-09AW066660.123 ppb
2013-04-10AW067300.268 ppb
2013-04-10AW066760.134 ppb
2013-04-10AW066720.108 ppb
2013-04-10AW067340.279 ppb
2013-04-10AW067320.263 ppb
2013-04-10AW066740.133 ppb
2013-04-10AW067360.280 ppb
2013-04-10AW066780.135 ppb
2013-04-11AW066680.153 ppb
2013-04-11AW067140.115 ppb
2013-04-11AW06726ND
2013-04-11AW067223.26 ppb
2013-04-11AW067180.993 ppb
2013-04-11AW066800.229 ppb
2013-04-11AW067242.64 ppb
2013-04-11AW067201.04 ppb
2013-04-11AW067280.423 ppb
2013-04-11AW066700.161 ppb
2013-04-11AW066820.269 ppb
2013-04-11AW067160.147 ppb
2013-05-091200-011-1025ND
2013-05-091200-133-0825ND
2013-06-281200-159-11251.42 ppb
2013-07-161200-159-11551.54 ppb
2013-07-25AW144790.116 ppb
2013-07-25AW144911.04 ppb
2013-07-25AW144830.261 ppb
2013-07-25AW144870.190 ppb
2013-07-25AW144810.123 ppb
2013-07-25AW144850.153 ppb
2013-07-25AW144890.272 ppb
2013-07-25AW144930.999 ppb
2013-07-26AW145900.0840 ppb
2013-07-26AW145940.0670 ppb
2013-07-26AW145980.0810 ppb
2013-07-26AW146021.19 ppb
2013-07-26AW146000.0820 ppb
2013-07-26AW145960.0730 ppb
2013-07-26AW146041.21 ppb
2013-07-26AW145920.0990 ppb
2013-08-131200-011-1235ND
2013-08-131200-133-10401.13 ppb
2013-10-29AW215500.191 ppb
2013-10-29AW215582.72 ppb
2013-10-29AW21562ND
2013-10-29AW21564ND
2013-10-29AW215601.85 ppb
2013-10-29AW215540.208 ppb
2013-10-29AW215560.242 ppb
2013-10-29AW215520.198 ppb
2013-10-30AW215841.47 ppb
2013-10-30AW215880.377 ppb
2013-10-30AW215800.0740 ppb
2013-10-30AW215760.0830 ppb
2013-10-30AW215780.0875 ppb
2013-10-30AW215860.943 ppb
2013-10-30AW215820.0810 ppb
2013-10-30AW215740.403 ppb
2013-10-31AW215660.0950 ppb
2013-10-31AW215700.852 ppb
2013-10-31AW215720.884 ppb
2013-10-31AW215680.103 ppb
2013-11-191200-011-1045ND
2013-11-191200-133-0800ND
2014-02-261200-011-1215ND
2014-02-261200-133-1215ND
2014-02-271200-159-08502.01 ppb
2014-03-18AX055760.391 ppb
2014-03-18AX055720.579 ppb
2014-03-18AX055801.30 ppb
2014-03-18AX055700.420 ppb
2014-03-19AX056661.24 ppb
2014-03-19AX056700.439 ppb
2014-03-19AX056620.0362 ppb
2014-03-19AX056640.0316 ppb
2014-03-19AX056720.420 ppb
2014-03-19AX056681.17 ppb
2014-03-20AX057811.61 ppb
2014-03-20AX05768ND
2014-03-20AX057760.0335 ppb
2014-03-20AX057720.0335 ppb
2014-03-20AX057800.623 ppb
2014-03-20AX057700.0323 ppb
2014-03-20AX057780.0526 ppb
2014-03-20AX05774ND
2014-03-311200-159-11452.08 ppb
2014-04-161200-211-08302.82 ppb
2014-04-231200-205-0910ND
2014-05-141200-011-1115ND
2014-05-141200-133-11051.80 ppb
2014-05-301200-159-10102.35 ppb
2014-06-271200-159-11352.04 ppb
2014-07-251200-159-10501.95 ppb
2014-08-121200-011-1030ND
2014-08-209590-133-09001.30 ppb
2014-08-261200-159-09452.08 ppb
2014-09-291200-159-10502.20 ppb
2014-10-071200-133-12301.42 ppb
2014-10-141200-133-06351.42 ppb
2014-10-211200-133-12451.40 ppb
2014-10-281200-133-11351.45 ppb
2014-11-041200-133-06301.50 ppb
2014-11-111200-133-06301.53 ppb
2014-11-111200-159-09052.45 ppb
2014-11-121200-011-1240ND
2014-11-181200-133-09351.59 ppb
2014-11-181200-133-12151.48 ppb
2014-11-251200-133-11151.34 ppb
2014-12-021200-133-11451.30 ppb
2014-12-091200-133-11301.32 ppb
2014-12-161200-133-11451.07 ppb
2014-12-231200-133-10001.32 ppb
2014-12-301200-133-1200ND
2014-12-311200-159-12002.19 ppb
2015-01-061200-133-12051.01 ppb
2015-01-131200-133-12001.25 ppb
2015-01-201200-133-12101.21 ppb
2015-01-261200-159-09502.18 ppb
2015-01-271200-133-06201.10 ppb
2015-02-031200-133-12251.26 ppb
2015-02-101200-133-0650ND
2015-02-111200-133-08251.18 ppb
2015-02-171200-133-13301.09 ppb
2015-02-191200-011-0845ND
2015-02-241200-133-06401.18 ppb
2015-02-241200-159-09402.07 ppb
2015-03-031200-133-06251.25 ppb
2015-03-101200-133-0610ND
2015-03-171200-133-0815ND
2015-03-241200-133-0645ND
2015-03-311200-133-0950ND
2015-04-071200-133-12451.07 ppb
2015-04-141200-133-12201.14 ppb
2015-04-211200-133-13551.13 ppb
2015-05-051200-133-09451.20 ppb
2015-05-071200-159-11052.70 ppb
2015-05-131200-133-08401.19 ppb
2015-05-191200-011-0900ND
2015-05-191200-133-06201.22 ppb
2015-05-191200-133-11001.24 ppb
2015-05-261200-133-13001.21 ppb
2015-06-021200-133-10451.31 ppb
2015-06-021200-205-1015ND
2015-06-091200-133-06551.20 ppb
2015-06-161200-133-07001.25 ppb
2015-06-191200-159-09002.32 ppb
2015-06-231200-133-06501.22 ppb
2015-07-161200-159-09502.31 ppb
2015-08-041200-011-1040ND
2015-08-041200-133-06451.33 ppb
2015-08-041200-205-1200ND
2015-08-071200-133-07151.33 ppb
2015-08-141200-133-06551.28 ppb
2015-08-181200-133-10401.27 ppb
2015-08-201200-159-10002.61 ppb
2015-08-251200-133-12351.32 ppb
2015-09-011200-133-07001.24 ppb
2015-09-081200-133-07401.32 ppb
2015-09-081200-205-0715ND
2015-09-151200-133-07301.28 ppb
2015-09-221200-133-13501.18 ppb
2015-09-281200-159-10002.55 ppb
2015-09-291200-133-08551.12 ppb
2015-10-061200-133-08301.03 ppb
2015-10-061200-205-1030ND
2015-10-131200-133-0745ND
2015-10-201200-133-0805ND
2015-10-201200-205-1155ND
2015-10-271200-133-0650ND
2015-10-301200-159-10502.13 ppb
2015-11-031200-133-0800ND
2015-11-031200-205-1100ND
2015-11-051200-011-1005ND
2015-11-051200-133-0755ND
2015-11-101200-133-07451.10 ppb
2015-11-171200-133-07301.22 ppb
2015-11-241200-133-07451.21 ppb
2015-11-271200-159-09302.92 ppb
2015-12-011200-133-07201.26 ppb
2015-12-081200-133-06301.09 ppb
2015-12-081200-205-1030ND
2015-12-111200-159-08452.39 ppb
2015-12-221200-133-07501.47 ppb
2015-12-291200-133-07001.19 ppb
2016-01-051200-133-06501.04 ppb
2016-01-051200-205-1030ND
2016-01-121200-133-1115ND
2016-01-131200-159-10402.51 ppb
2016-01-191200-133-06501.30 ppb
2016-01-261200-133-1100ND
2016-02-021200-133-09451.06 ppb
2016-02-021200-205-1210ND
2016-02-091200-133-0930ND
2016-02-091200-133-1130ND
2016-02-161200-133-10401.25 ppb
2016-02-231200-133-07301.20 ppb
2016-02-241200-011-1215ND
2016-02-241200-211-11251.34 ppb
2016-02-271200-159-08401.71 ppb
2016-03-011200-133-0710ND
2016-03-081200-133-13201.12 ppb
2016-03-151200-133-08101.13 ppb
2016-03-231200-133-1050ND
2016-03-291200-133-08201.60 ppb
2016-03-291200-159-10003.04 ppb
2016-04-051200-133-07301.28 ppb
2016-04-121200-133-08401.51 ppb
2016-04-191200-133-07151.09 ppb
2016-04-191200-159-09452.90 ppb
2016-04-261200-133-0835ND
2016-05-031200-133-07451.50 ppb
2016-05-101200-133-07401.26 ppb
2016-05-171200-133-11001.20 ppb
2016-05-251200-011-1135ND
2016-05-251200-133-09451.20 ppb
2016-05-251200-133-12101.17 ppb
2016-05-261200-159-10152.82 ppb
2016-05-311200-133-10451.20 ppb
2016-06-081200-133-08501.04 ppb
2016-06-141200-133-0815ND
2016-06-221200-133-0920ND
2016-06-281200-133-10001.05 ppb
2016-07-051200-133-0935ND
2016-07-121200-133-1045ND
2016-07-191200-133-1045ND
2016-07-211200-205-1225ND
2016-07-261200-133-1125ND
2016-08-021200-133-0710ND
2016-08-091200-133-1045ND
2016-08-161200-133-1045ND
2016-08-171200-011-1010ND
2016-08-231200-133-10051.02 ppb
2016-08-301200-133-08251.16 ppb
2016-09-061200-133-13101.17 ppb
2016-09-131200-133-08051.10 ppb
2016-09-201200-133-08201.23 ppb
2016-09-271200-133-07151.27 ppb
2016-10-041200-133-13001.30 ppb
2016-10-111200-133-12201.23 ppb
2016-10-181200-133-08201.39 ppb
2016-10-251200-133-10301.28 ppb
2016-11-011200-133-06351.41 ppb
2016-11-081200-133-08451.12 ppb
2016-11-161200-133-07201.29 ppb
2016-11-211200-133-11151.41 ppb
2016-11-221200-133-13201.41 ppb
2016-11-291200-011-0845ND
2016-11-291200-133-07501.29 ppb
2016-11-291200-159-10053.11 ppb
2016-12-061200-133-07301.19 ppb
2016-12-131200-133-07251.21 ppb
2016-12-201200-133-07251.10 ppb
2016-12-271200-133-1000ND
2017-01-031200-133-1045ND
2017-01-181200-205-1235ND
2017-01-191200-133-07351.12 ppb
2017-01-241200-133-10401.09 ppb
2017-01-301200-159-10152.95 ppb
2017-01-311200-133-0815ND
2017-02-071200-133-0755ND
2017-02-141200-133-0730ND
2017-02-161200-159-09402.98 ppb
2017-02-211200-011-1140ND
2017-02-211200-133-0730ND
2017-02-211200-133-1210ND
2017-02-281200-133-0715ND
2017-03-071200-133-0725ND
2017-03-101200-159-09203.07 ppb
2017-03-141200-133-1303ND
2017-03-211200-133-1049ND
2017-03-281200-133-1342ND
2017-04-041200-133-1209ND
2017-04-111200-133-1152ND
2017-04-181200-133-1217ND
2017-04-251200-133-1210ND
2017-05-021200-133-1245ND
2017-05-091200-011-0940ND
2017-05-091200-133-0747ND
2017-05-161200-133-0912ND
2017-05-171200-133-0941ND
2017-05-231200-133-0832ND
2017-05-301200-133-1308ND
2017-06-061200-133-1234ND
2017-06-131200-133-0728ND
2017-06-201200-133-0736ND
2017-06-221200-159-08303.08 ppb
2017-06-271200-133-0936ND
2017-07-041200-133-0805ND
2017-07-101200-159-11353.98 ppb
2017-07-111200-133-0803ND
2017-07-121200-205-1000ND
2017-07-181200-133-0725ND
2017-07-251200-133-0818ND
2017-08-011200-133-0825ND
2017-08-011200-133-0940ND
2017-08-081200-133-1251ND
2017-08-151200-133-0727ND
2017-08-211200-011-1010ND
2017-08-221200-133-0914ND
2017-08-291200-133-0802ND
2017-08-291200-159-12154.37 ppb
2017-09-051200-133-1225ND
2017-09-121200-133-1243ND
2017-09-191200-133-1316ND
2017-09-261200-133-1225ND
2017-09-271200-159-10304.51 ppb
2017-10-031200-133-1235ND
2017-10-101200-133-1218ND
2017-10-171200-133-1330ND
2017-10-201200-159-10004.30 ppb
2017-10-241200-133-0751ND
2017-10-311200-133-0728ND
2017-11-031200-159-10504.60 ppb
2017-11-071200-133-0738ND
2017-11-141200-133-0738ND
2017-11-201200-011-1000ND
2017-11-201200-133-1040ND
2017-11-211200-133-0904ND
2017-11-281200-133-1209ND
2017-12-051200-133-1206ND
2017-12-121200-133-0710ND
2017-12-191200-133-1200ND
2017-12-261200-133-1059ND