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EWG's Tap Water Database — 2021 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).

 

429

Samples

0

Samples exceeding legal limit (MCL)

201

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.486 ppb5855ND - 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
2018ND560ND
2019ND560ND

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
2013-04-09AW066640.112 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
2013-07-25AW144790.116 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
2013-10-29AW215500.191 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
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
2018-01-021200-133-1151ND
2018-01-091200-133-0917ND
2018-01-161200-133-0859ND
2018-01-231200-133-0843ND
2018-01-301200-133-0948ND
2018-02-061200-011-1040ND
2018-02-061200-133-0905ND
2018-02-071200-133-0930ND
2018-02-131200-133-0820ND
2018-02-201200-133-0734ND
2018-02-271200-133-0800ND
2018-03-061200-133-1109ND
2018-03-131200-133-0723ND
2018-03-201200-133-0931ND
2018-03-271200-133-0901ND
2018-04-031200-133-0912ND
2018-04-101200-133-0908ND
2018-04-171200-133-0905ND
2018-04-241200-133-0906ND
2018-05-011200-133-0943ND
2018-05-081200-133-0736ND
2018-05-081200-133-0907ND
2018-05-151200-133-1221ND
2018-05-221200-133-0952ND
2018-05-231200-011-0925ND
2018-05-291200-133-1325ND
2018-06-051200-133-1239ND
2018-06-121200-133-1220ND
2018-06-191200-133-1251ND
2018-06-261200-133-0721ND
2018-07-031200-133-0724ND
2018-07-101200-133-0720ND
2018-07-171200-133-0717ND
2018-07-241200-133-0707ND
2018-07-311200-133-0723ND
2018-08-071200-133-0655ND
2018-08-141200-133-1251ND
2018-08-161200-011-0940ND
2018-08-161200-133-0747ND
2018-08-211200-133-1215ND
2018-08-281200-133-1229ND
2018-09-041200-133-1021ND
2018-09-111200-133-1212ND
2018-09-181200-133-0737ND
2018-09-251200-133-0748ND
2018-10-021200-133-0732ND
2018-10-091200-133-0721ND
2018-10-161200-133-1155ND
2018-10-231200-133-0737ND
2018-10-301200-133-0856ND
2018-11-061200-011-0842ND
2018-11-151200-133-0917ND
2018-12-041200-133-0849ND
2018-12-111200-133-0912ND
2018-12-181200-133-0952ND
2018-12-251200-133-1004ND
2019-01-011200-133-0927ND
2019-01-081200-133-0923ND
2019-01-151200-133-0901ND
2019-01-221200-133-0811ND
2019-01-291200-133-0735ND
2019-02-051200-133-0810ND
2019-02-111200-133-1011ND
2019-02-121200-133-0917ND
2019-02-131200-011-1115ND
2019-02-191200-133-0815ND
2019-02-261200-133-0840ND
2019-03-051200-133-0728ND
2019-03-121200-133-0841ND
2019-03-191200-133-0919ND
2019-03-261200-133-0859ND
2019-04-021200-133-0846ND
2019-04-091200-133-0841ND
2019-04-161200-133-1252ND
2019-04-231200-133-1150ND
2019-05-011200-133-0805ND
2019-05-071200-133-1338ND
2019-05-141200-133-1242ND
2019-05-211200-011-1012ND
2019-05-211200-133-0647ND
2019-05-221200-133-0945ND
2019-05-281200-133-1227ND
2019-06-041200-133-0759ND
2019-06-111200-133-0907ND
2019-06-181200-133-0844ND
2019-06-251200-133-0750ND
2019-07-021200-133-0750ND
2019-07-091200-133-0809ND
2019-07-161200-133-0853ND
2019-07-241200-133-0747ND
2019-07-301200-133-0843ND
2019-08-061200-133-1047ND
2019-08-121200-011-1028ND
2019-08-131200-133-0907ND
2019-08-131200-133-0951ND
2019-08-201200-133-0857ND
2019-08-271200-133-0746ND
2019-09-031200-133-1010ND
2019-09-101200-133-0923ND
2019-09-171200-133-0913ND
2019-09-241200-133-0908ND
2019-10-011200-133-1213ND
2019-10-081200-133-1219ND
2019-10-151200-133-0858ND
2019-10-221200-133-1231ND
2019-10-291200-133-1235ND
2019-11-051200-133-1249ND
2019-11-071200-011-0958ND
2019-11-071200-133-0852ND
2019-11-121200-133-1208ND
2019-11-191200-133-0759ND
2019-11-261200-133-0726ND