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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

California Water Service Company - Dixon

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).

MORE ABOUT THIS CONTAMINANT

 

326

Samples

0

Samples exceeding legal limit (MCL)

254

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201418.8 ppb131313.0 ppb - 24.0 ppb
201510.4 ppb4837ND - 24.0 ppb
20169.85 ppb9582ND - 27.0 ppb
20178.87 ppb5847ND - 25.0 ppb
20188.01 ppb5637ND - 27.0 ppb
20197.64 ppb5638ND - 26.0 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
2014-02-185810-002-093518.0 ppb
2014-02-195810-006-114522.0 ppb
2014-02-195810-007-101817.0 ppb
2014-02-195810-017-140523.0 ppb
2014-03-045810-008-084017.0 ppb
2014-05-205810-002-094513.0 ppb
2014-05-205810-003-114022.0 ppb
2014-05-205810-005-085017.0 ppb
2014-05-205810-006-090816.0 ppb
2014-05-205810-007-100417.0 ppb
2014-05-205810-017-141020.0 ppb
2014-06-095810-008-090319.0 ppb
2014-12-301610-004-113324.0 ppb
2015-01-011610-002-095014.0 ppb
2015-01-011610-003-140024.0 ppb
2015-01-011610-005-112018.0 ppb
2015-01-011610-006-110023.0 ppb
2015-01-011610-017-082524.0 ppb
2015-01-091610-007-120718.0 ppb
2015-01-091610-008-145517.0 ppb
2015-04-079590-009-134511.0 ppb
2015-06-115810-002-113513.0 ppb
2015-06-115810-005-093819.0 ppb
2015-06-115810-007-113617.0 ppb
2015-06-115810-008-134718.0 ppb
2015-06-119590-017-161523.0 ppb
2015-06-129590-017-164423.0 ppb
2015-06-159590-017-113323.0 ppb
2015-06-169590-017-103824.0 ppb
2015-06-179590-017-142823.0 ppb
2015-07-065810-017-0830ND
2015-09-035810-002-141713.0 ppb
2015-09-035810-010-1419ND
2015-09-085810-002-140014.0 ppb
2015-09-095810-002-140014.0 ppb
2015-09-095810-010-1403ND
2015-09-105810-002-141914.0 ppb
2015-09-175810-010-1521ND
2015-09-225810-010-1443ND
2015-09-285810-010-1115ND
2015-10-085810-019-13053.30 ppb
2015-10-145810-010-1036ND
2015-10-205810-010-11181.80 ppb
2015-10-265810-010-14202.50 ppb
2015-11-035810-002-134314.0 ppb
2015-11-035810-010-13402.00 ppb
2015-11-095810-010-10282.10 ppb
2015-11-095810-017-10365.90 ppb
2015-11-095810-019-1037ND
2015-11-185810-010-11271.70 ppb
2015-11-235810-010-09301.70 ppb
2015-12-025810-010-09031.40 ppb
2015-12-025810-019-09158.60 ppb
2015-12-281644-008-153015.0 ppb
2015-12-281644-015-1532ND
2015-12-291644-008-105517.0 ppb
2015-12-291644-015-10570.0700 ppb
2015-12-301644-008-144517.0 ppb
2015-12-301644-015-1443ND
2015-12-311644-008-143316.0 ppb
2015-12-311644-015-1435ND
2016-01-011644-008-150416.0 ppb
2016-01-011644-015-15060.0800 ppb
2016-01-069590-015-1121ND
2016-01-075810-010-13442.40 ppb
2016-01-075810-019-13557.90 ppb
2016-01-129590-008-142417.0 ppb
2016-01-209590-015-0940ND
2016-01-269590-015-1401ND
2016-02-035810-002-103015.0 ppb
2016-02-035810-008-091817.0 ppb
2016-02-035810-010-10312.20 ppb
2016-02-035810-015-0916ND
2016-02-035810-017-111625.0 ppb
2016-02-035810-019-11179.30 ppb
2016-02-095810-015-1509ND
2016-02-175810-015-0951ND
2016-02-255810-015-1338ND
2016-03-035810-015-1457ND
2016-03-105810-008-092819.0 ppb
2016-03-105810-010-10221.30 ppb
2016-03-105810-015-0929ND
2016-03-145810-015-1406ND
2016-03-235810-015-1357ND
2016-03-295810-015-0932ND
2016-04-055810-008-105519.0 ppb
2016-04-055810-010-10142.20 ppb
2016-04-055810-015-10562.20 ppb
2016-04-065810-017-112021.0 ppb
2016-05-195810-019-10291.10 ppb
2016-05-205810-019-10161.10 ppb
2016-05-235810-002-094015.0 ppb
2016-05-235810-008-081419.0 ppb
2016-05-235810-010-09413.00 ppb
2016-05-235810-015-08118.40 ppb
2016-05-235810-017-144024.0 ppb
2016-05-235810-019-14411.10 ppb
2016-06-025810-008-100322.0 ppb
2016-06-025810-010-10452.50 ppb
2016-06-025810-015-10046.40 ppb
2016-06-025810-019-11301.40 ppb
2016-06-139590-020-170013.0 ppb
2016-07-055810-008-081217.0 ppb
2016-07-055810-010-09002.40 ppb
2016-07-055810-015-08131.70 ppb
2016-07-055810-019-13033.00 ppb
2016-08-245810-002-151914.0 ppb
2016-08-245810-008-150720.0 ppb
2016-08-245810-010-15162.00 ppb
2016-08-245810-015-15033.00 ppb
2016-08-245810-017-151826.0 ppb
2016-08-245810-019-150810.00 ppb
2016-09-025810-017-170024.0 ppb
2016-09-025810-019-170013.0 ppb
2016-09-125810-008-133320.0 ppb
2016-09-125810-010-13481.60 ppb
2016-09-125810-015-13324.10 ppb
2016-09-125810-019-14255.40 ppb
2016-09-225810-017-105825.0 ppb
2016-09-225810-019-10577.50 ppb
2016-09-255810-017-144824.0 ppb
2016-09-255810-019-14498.10 ppb
2016-10-045810-008-135418.0 ppb
2016-10-045810-010-14311.50 ppb
2016-10-045810-015-13554.60 ppb
2016-10-045810-017-140423.0 ppb
2016-10-045810-019-140511.0 ppb
2016-10-115810-017-140925.0 ppb
2016-10-115810-019-14089.80 ppb
2016-10-245810-017-145023.0 ppb
2016-10-245810-019-14517.30 ppb
2016-10-315810-017-151522.0 ppb
2016-10-315810-019-15164.50 ppb
2016-11-095810-002-143915.0 ppb
2016-11-095810-008-143116.0 ppb
2016-11-095810-010-14401.000 ppb
2016-11-095810-015-14301.70 ppb
2016-11-095810-017-142520.0 ppb
2016-11-095810-019-14272.10 ppb
2016-11-155810-017-110425.0 ppb
2016-11-155810-019-11052.80 ppb
2016-11-215810-017-113020.0 ppb
2016-11-215810-019-11313.60 ppb
2016-11-295810-017-145021.0 ppb
2016-11-295810-019-14512.70 ppb
2016-12-075810-008-110617.0 ppb
2016-12-075810-010-1403ND
2016-12-075810-015-11041.80 ppb
2016-12-082371-017-134622.3 ppb
2016-12-082371-019-13472.40 ppb
2016-12-145810-017-141227.0 ppb
2016-12-145810-019-14133.30 ppb
2016-12-215810-017-111224.0 ppb
2016-12-215810-019-11134.80 ppb
2016-12-295810-017-134320.0 ppb
2016-12-295810-019-13445.80 ppb
2017-01-025810-008-092118.0 ppb
2017-01-025810-010-13151.10 ppb
2017-01-025810-015-09223.80 ppb
2017-01-025810-019-10297.50 ppb
2017-02-155810-002-105014.0 ppb
2017-02-155810-008-113016.0 ppb
2017-02-155810-010-10522.10 ppb
2017-02-155810-015-11314.40 ppb
2017-02-155810-017-085025.0 ppb
2017-02-155810-019-08516.20 ppb
2017-03-095810-008-140114.0 ppb
2017-03-095810-010-14152.00 ppb
2017-03-095810-015-14024.50 ppb
2017-03-095810-019-14276.50 ppb
2017-03-275810-002-155014.0 ppb
2017-04-045810-008-112117.0 ppb
2017-04-045810-010-11021.30 ppb
2017-04-045810-015-11102.80 ppb
2017-04-045810-019-14467.30 ppb
2017-05-035810-002-154717.0 ppb
2017-05-035810-008-144817.0 ppb
2017-05-035810-010-1548ND
2017-05-035810-015-14491.50 ppb
2017-05-035810-017-151024.0 ppb
2017-05-035810-019-15114.10 ppb
2017-06-055810-002-145016.0 ppb
2017-06-055810-008-141722.0 ppb
2017-06-055810-010-14491.40 ppb
2017-06-055810-015-1416ND
2017-06-055810-019-15167.20 ppb
2017-07-065810-008-142222.0 ppb
2017-07-065810-010-13231.20 ppb
2017-07-065810-015-1421ND
2017-07-065810-019-15587.10 ppb
2017-08-085810-008-110721.0 ppb
2017-08-085810-010-1029ND
2017-08-085810-015-1105ND
2017-08-085810-017-115325.0 ppb
2017-08-085810-019-11549.20 ppb
2017-09-125810-002-151314.0 ppb
2017-09-125810-008-150617.0 ppb
2017-09-125810-010-15161.10 ppb
2017-09-125810-015-1504ND
2017-09-125810-019-14476.40 ppb
2017-10-115810-008-144819.0 ppb
2017-10-115810-010-14251.40 ppb
2017-10-115810-015-1449ND
2017-10-115810-019-14375.60 ppb
2017-11-075810-008-153015.0 ppb
2017-11-075810-010-1520ND
2017-11-075810-015-1531ND
2017-11-075810-017-145724.0 ppb
2017-11-075810-019-14584.80 ppb
2017-12-175810-002-140118.0 ppb
2017-12-175810-008-133020.0 ppb
2017-12-175810-010-1400ND
2017-12-175810-015-1331ND
2017-12-175810-019-14245.00 ppb
2018-01-025810-008-153215.0 ppb
2018-01-025810-010-1552ND
2018-01-025810-015-1531ND
2018-01-025810-019-16065.10 ppb
2018-02-225810-008-100525.0 ppb
2018-02-225810-010-0924ND
2018-02-225810-015-1006ND
2018-02-225810-017-140027.0 ppb
2018-02-225810-019-14013.20 ppb
2018-03-075810-002-134014.0 ppb
2018-03-075810-008-112513.0 ppb
2018-03-075810-010-1341ND
2018-03-075810-015-1123ND
2018-03-075810-019-08502.90 ppb
2018-04-045810-008-103719.0 ppb
2018-04-045810-010-09121.40 ppb
2018-04-045810-015-1038ND
2018-04-045810-019-14503.50 ppb
2018-05-095810-008-141618.0 ppb
2018-05-095810-010-1514ND
2018-05-095810-015-1415ND
2018-05-095810-017-144521.0 ppb
2018-05-095810-019-14475.00 ppb
2018-06-045810-002-141516.0 ppb
2018-06-045810-008-134422.0 ppb
2018-06-045810-010-14161.90 ppb
2018-06-045810-015-1345ND
2018-06-045810-019-13595.20 ppb
2018-07-025806-008-132519.0 ppb
2018-07-025806-010-14501.10 ppb
2018-07-025806-015-13220.310 ppb
2018-07-025806-019-14207.20 ppb
2018-08-135810-008-141019.0 ppb
2018-08-135810-010-14591.70 ppb
2018-08-135810-015-1408ND
2018-08-135810-017-135424.0 ppb
2018-08-135810-019-13536.70 ppb
2018-09-065810-002-074114.0 ppb
2018-09-065810-008-080917.0 ppb
2018-09-065810-010-0743ND
2018-09-065810-015-0812ND
2018-09-065810-019-08518.70 ppb
2018-10-025810-008-133819.0 ppb
2018-10-025810-010-1150ND
2018-10-025810-015-1332ND
2018-10-025810-019-14156.30 ppb
2018-11-065810-008-135416.0 ppb
2018-11-065810-010-1328ND
2018-11-065810-015-1355ND
2018-11-065810-017-141223.0 ppb
2018-11-065810-019-14137.80 ppb
2018-12-035810-002-101019.0 ppb
2018-12-035810-008-104415.0 ppb
2018-12-035810-010-1011ND
2018-12-035810-015-1045ND
2018-12-035810-019-09455.80 ppb
2019-01-085810-008-142117.0 ppb
2019-01-085810-010-1344ND
2019-01-085810-015-1422ND
2019-01-085810-019-15114.50 ppb
2019-02-135810-008-110618.0 ppb
2019-02-135810-010-14401.80 ppb
2019-02-135810-015-1107ND
2019-02-135810-017-145423.0 ppb
2019-02-135810-019-14554.20 ppb
2019-03-055810-002-100017.0 ppb
2019-03-055810-008-104118.0 ppb
2019-03-055810-010-0954ND
2019-03-055810-015-1040ND
2019-03-055810-019-14563.90 ppb
2019-04-045810-008-102818.0 ppb
2019-04-045810-010-09331.40 ppb
2019-04-045810-015-1029ND
2019-04-045810-019-11156.70 ppb
2019-05-065810-008-090219.0 ppb
2019-05-065810-010-1014ND
2019-05-065810-015-0855ND
2019-05-065810-017-111521.0 ppb
2019-05-065810-019-11164.60 ppb
2019-06-045810-002-113514.0 ppb
2019-06-045810-008-104315.0 ppb
2019-06-045810-010-11361.60 ppb
2019-06-045810-015-1043ND
2019-06-045810-019-10474.00 ppb
2019-07-025810-008-104618.0 ppb
2019-07-025810-010-09571.10 ppb
2019-07-025810-015-1047ND
2019-07-025810-019-11405.60 ppb
2019-08-065810-008-100120.0 ppb
2019-08-065810-010-0940ND
2019-08-065810-015-1003ND
2019-08-065810-017-113722.0 ppb
2019-08-065810-019-11386.00 ppb
2019-09-045810-002-103615.0 ppb
2019-09-045810-008-101017.0 ppb
2019-09-045810-010-10341.20 ppb
2019-09-045810-015-1005ND
2019-09-045810-019-11135.40 ppb
2019-10-075810-008-140818.0 ppb
2019-10-075810-010-1325ND
2019-10-075810-015-1409ND
2019-10-075810-019-14464.80 ppb
2019-11-065810-008-133015.0 ppb
2019-11-065810-010-1054ND
2019-11-065810-015-1331ND
2019-11-065810-017-141726.0 ppb
2019-11-065810-019-14185.70 ppb
2019-12-045810-002-144513.0 ppb
2019-12-045810-008-142216.0 ppb
2019-12-045810-010-14441.20 ppb
2019-12-045810-015-1420ND
2019-12-045810-019-14554.00 ppb