Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Chromium (total)

Cal-am Water Company - Duarte

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.

 

75

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.148 ppb4013ND - 1.10 ppb
2014ND80ND
2015ND70ND
2016ND200ND
2017N/A00N/A

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
2013-03-0621126801ND
2013-03-0621127001ND
2013-03-06211271010.200 ppb
2013-03-12211269010.500 ppb
2013-03-12211264010.300 ppb
2013-03-1321127201ND
2013-03-13211265011.000 ppb
2013-03-1321269901ND
2013-04-10217676011.10 ppb
2013-09-10233945010.300 ppb
2013-09-10233948010.300 ppb
2013-09-10233949010.500 ppb
2013-09-10233943010.500 ppb
2013-09-10233944010.200 ppb
2013-09-10233941010.300 ppb
2013-09-10233942010.400 ppb
2013-09-10233947010.300 ppb
2013-09-1023394601ND
2013-09-129590-007-1330ND
2013-09-129590-004-1415ND
2013-09-129590-003-1340ND
2013-09-129590-008-1425ND
2013-09-129590-002-1440ND
2013-09-129590-009-1355ND
2013-09-129590-010-1450ND
2013-09-181225-009-1025ND
2013-09-181225-002-1130ND
2013-09-181225-008-1105ND
2013-09-181225-010-1150ND
2013-09-181225-003-1010ND
2013-09-181225-007-0950ND
2013-09-181225-019-0850ND
2013-09-181225-004-1045ND
2013-12-049588-009-1105ND
2013-12-049588-008-1140ND
2013-12-049588-010-1220ND
2013-12-049588-007-1040ND
2013-12-049588-004-1130ND
2013-12-049588-003-1055ND
2013-12-049588-002-1210ND
2014-06-231225-003-1110ND
2014-06-231225-007-1240ND
2014-06-231225-002-1300ND
2014-06-231225-019-1005ND
2014-06-231225-008-1235ND
2014-06-231225-010-1330ND
2014-06-231225-009-1135ND
2014-12-039588-019-1020ND
2015-09-281225-003-1050ND
2015-09-281225-010-0945ND
2015-09-281225-007-1200ND
2015-09-281225-008-1330ND
2015-09-281225-009-1345ND
2015-10-141225-019-0945ND
2015-10-141225-002-1205ND
2016-06-201225-010-1135ND
2016-06-201225-019-1115ND
2016-06-201225-008-1145ND
2016-07-201225-002-1110ND
2016-07-201225-003-1000ND
2016-07-201225-007-0930ND
2016-07-201225-009-1030ND
2016-08-109590-008-1030ND
2016-08-109590-007-1045ND
2016-08-109590-019-1125ND
2016-08-109590-010-1015ND
2016-08-119590-009-1150ND
2016-08-119590-003-1205ND
2016-08-119590-002-1105ND
2016-09-079588-008-1345ND
2016-09-079588-007-1245ND
2016-09-079588-003-1305ND
2016-09-079588-009-1400ND
2016-09-079588-002-1330ND
2016-09-079588-010-1315ND