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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Los Angeles County WW District 4 & 34-Lancaster

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).

 

206

Samples

0

Samples exceeding legal limit (MCL)

205

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20138.74 ppb17170.300 ppb - 16.0 ppb
20147.81 ppb4645ND - 16.4 ppb
201511.5 ppb52521.58 ppb - 17.3 ppb
201611.4 ppb76767.20 ppb - 16.9 ppb
201711.0 ppb15156.20 ppb - 16.0 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
2013-11-14201311150378AM1.20 ppb
2013-11-18201311200611AM16.0 ppb
2013-11-19201311250062AM8.40 ppb
2013-11-19201311250078AM12.0 ppb
2013-11-19201311220608AM5.40 ppb
2013-11-19201311220610AM11.0 ppb
2013-11-20201312020193AM9.00 ppb
2013-11-20201311270080AM12.0 ppb
2013-11-20201312020184AM6.00 ppb
2013-11-20201311270082AM8.40 ppb
2013-11-25201312040648AM12.0 ppb
2013-11-25201312030254AM14.0 ppb
2013-11-25201312030252AM6.00 ppb
2013-11-26201312040650AM0.300 ppb
2013-12-11201312140178AM5.30 ppb
2013-12-11201312140176AM13.0 ppb
2013-12-11201312140179AM8.50 ppb
2014-02-13201402140365AM1.30 ppb
2014-02-13201402140367AM2.90 ppb
2014-04-215442-040-11359.31 ppb
2014-05-13201405160381AM13.0 ppb
2014-05-13201405160338AM10.00 ppb
2014-05-13201405160379AM7.90 ppb
2014-05-14201405190271AM12.0 ppb
2014-05-14201405220244AM12.0 ppb
2014-05-14201405160332AM5.30 ppb
2014-05-14201405190269AM8.30 ppb
2014-05-14201405160336AM6.60 ppb
2014-05-14201405160355AM1.90 ppb
2014-05-14201405160334AM0.630 ppb
2014-05-20201405220248AM9.40 ppb
2014-05-20201405230366AM12.0 ppb
2014-05-21201405230356AM12.0 ppb
2014-05-21201405230368AM15.0 ppb
2014-05-21201405290634AM12.0 ppb
2014-05-27201405290650AM4.50 ppb
2014-05-27201405290654AM8.90 ppb
2014-08-07201408120547AM0.360 ppb
2014-08-07201408120561AM0.420 ppb
2014-12-035442-016-08201.19 ppb
2014-12-035442-023-08356.31 ppb
2014-12-085442-002-102011.3 ppb
2014-12-085442-011-091516.4 ppb
2014-12-085442-037-103510.2 ppb
2014-12-085442-053-104011.1 ppb
2014-12-085442-054-104510.2 ppb
2014-12-085442-055-092513.5 ppb
2014-12-095442-036-08435.08 ppb
2014-12-105442-026-08265.83 ppb
2014-12-105442-041-08105.31 ppb
2014-12-105442-045-0930ND
2014-12-105442-067-11019.88 ppb
2014-12-105442-069-10006.36 ppb
2014-12-105442-070-09359.42 ppb
2014-12-105442-071-092510.1 ppb
2014-12-105442-094-10455.87 ppb
2014-12-105442-095-10556.58 ppb
2014-12-115442-028-09009.83 ppb
2014-12-115442-035-10136.45 ppb
2014-12-115442-048-09239.47 ppb
2014-12-115442-062-09156.56 ppb
2014-12-115442-063-09198.65 ppb
2014-12-115442-093-09008.12 ppb
2015-03-045442-002-093014.1 ppb
2015-03-045442-011-102017.2 ppb
2015-03-045442-053-091011.9 ppb
2015-03-125442-055-100015.5 ppb
2015-06-015442-101-113514.5 ppb
2015-06-025442-037-081515.1 ppb
2015-06-025442-053-093011.3 ppb
2015-06-025442-054-091511.3 ppb
2015-06-055442-101-122013.4 ppb
2015-06-095442-011-111017.3 ppb
2015-06-095442-055-105016.1 ppb
2015-06-125442-037-083511.2 ppb
2015-06-125442-053-083011.2 ppb
2015-06-125442-054-083010.7 ppb
2015-07-145442-037-100011.0 ppb
2015-07-145442-053-094511.7 ppb
2015-07-145442-054-093010.9 ppb
2015-08-185442-037-093010.7 ppb
2015-08-185442-053-095012.0 ppb
2015-08-185442-054-094510.8 ppb
2015-09-225442-037-103011.0 ppb
2015-09-225442-053-104511.9 ppb
2015-09-225442-054-104010.8 ppb
2015-10-135442-037-095510.8 ppb
2015-10-135442-053-094711.5 ppb
2015-10-135442-054-095110.5 ppb
2015-11-175442-011-100016.6 ppb
2015-11-175442-055-100515.0 ppb
2015-11-185442-037-094010.6 ppb
2015-11-185442-053-095511.8 ppb
2015-11-185442-054-095010.8 ppb
2015-11-245442-037-08309.22 ppb
2015-11-245442-053-082311.6 ppb
2015-11-245442-054-082511.2 ppb
2015-11-305442-037-10309.19 ppb
2015-11-305442-053-094512.0 ppb
2015-11-305442-054-095011.4 ppb
2015-12-075442-037-09108.08 ppb
2015-12-075442-053-084511.0 ppb
2015-12-075442-054-085011.0 ppb
2015-12-145442-037-08121.58 ppb
2015-12-145442-053-082911.2 ppb
2015-12-145442-054-082710.4 ppb
2015-12-215442-037-091511.0 ppb
2015-12-215442-053-093012.0 ppb
2015-12-215442-054-092510.9 ppb
2015-12-235442-037-09503.86 ppb
2015-12-235442-053-093511.6 ppb
2015-12-235442-054-093011.1 ppb
2015-12-295442-037-10105.57 ppb
2015-12-295442-053-094511.7 ppb
2015-12-295442-054-094011.1 ppb
2016-01-055442-037-10007.20 ppb
2016-01-055442-053-095011.6 ppb
2016-01-055442-054-094510.7 ppb
2016-01-125442-037-104510.7 ppb
2016-01-125442-053-102012.0 ppb
2016-01-125442-054-102011.2 ppb
2016-01-125442-054-102511.0 ppb
2016-01-195442-037-11007.69 ppb
2016-01-195442-053-105010.9 ppb
2016-01-195442-054-104510.3 ppb
2016-01-255442-037-08409.89 ppb
2016-01-255442-053-082011.2 ppb
2016-01-255442-054-082510.6 ppb
2016-01-265442-011-102016.8 ppb
2016-01-265442-055-101015.2 ppb
2016-02-015442-053-112512.0 ppb
2016-02-015442-054-113011.0 ppb
2016-02-025442-037-09408.66 ppb
2016-02-085442-037-114010.2 ppb
2016-02-085442-053-111511.8 ppb
2016-02-085442-054-112010.9 ppb
2016-02-165442-037-114010.4 ppb
2016-02-165442-053-112011.7 ppb
2016-02-165442-054-112510.6 ppb
2016-02-225442-037-110510.8 ppb
2016-02-225442-053-104511.5 ppb
2016-02-225442-054-105010.9 ppb
2016-02-295442-037-114510.1 ppb
2016-02-295442-053-112011.6 ppb
2016-02-295442-054-113010.7 ppb
2016-03-155442-037-104010.9 ppb
2016-03-155442-053-101511.8 ppb
2016-03-155442-054-102010.6 ppb
2016-04-195442-011-105016.9 ppb
2016-04-195442-055-104515.4 ppb
2016-05-095442-101-114710.7 ppb
2016-05-125442-011-094016.1 ppb
2016-05-125442-055-093015.3 ppb
2016-05-125442-101-09059.01 ppb
2016-05-165442-101-09459.56 ppb
2016-05-185442-037-102214.7 ppb
2016-05-185442-053-095911.9 ppb
2016-05-185442-054-095511.3 ppb
2016-05-235442-070-111013.0 ppb
2016-05-235442-071-110513.1 ppb
2016-05-235442-101-10009.59 ppb
2016-06-035442-037-09088.55 ppb
2016-06-035442-101-09318.10 ppb
2016-06-065442-101-10527.82 ppb
2016-06-145442-101-10107.81 ppb
2016-06-205442-101-09337.86 ppb
2016-06-285442-037-112811.4 ppb
2016-06-285442-053-115612.0 ppb
2016-06-285442-054-115011.1 ppb
2016-07-205442-037-110410.4 ppb
2016-07-205442-053-111211.2 ppb
2016-07-205442-054-111610.6 ppb
2016-07-255442-011-112016.2 ppb
2016-07-255442-055-104014.0 ppb
2016-08-245442-037-100210.1 ppb
2016-08-245442-053-091611.5 ppb
2016-08-245442-054-092110.8 ppb
2016-09-145442-037-115411.0 ppb
2016-09-145442-053-115811.7 ppb
2016-09-145442-054-115411.0 ppb
2016-10-195442-037-110611.0 ppb
2016-10-195442-053-104011.4 ppb
2016-10-195442-054-103311.0 ppb
2016-10-255442-011-102516.7 ppb
2016-10-255442-055-100015.0 ppb
2016-11-165442-037-115811.5 ppb
2016-11-165442-053-105911.9 ppb
2016-11-165442-054-105211.5 ppb
2016-12-085442-037-091511.3 ppb
2016-12-085442-053-093511.7 ppb
2016-12-085442-054-092511.4 ppb
2017-01-245442-037-090010.8 ppb
2017-01-245442-053-090011.0 ppb
2017-01-245442-054-090010.9 ppb
2017-01-255442-011-105016.0 ppb
2017-01-255442-055-110014.4 ppb
2017-02-085442-037-113013.0 ppb
2017-02-085442-053-111513.0 ppb
2017-02-085442-054-112013.0 ppb
2017-03-155442-037-104512.0 ppb
2017-03-155442-053-100012.0 ppb
2017-03-155442-054-101512.0 ppb
2017-05-229590-101-11006.30 ppb
2017-06-139588-101-08107.20 ppb
2017-06-199588-101-11107.10 ppb
2017-06-269588-101-09456.20 ppb