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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Cross Valley Water District

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.455 ppb113ND - 2.00 ppb
20130.384 ppb216ND - 2.00 ppb
2014ND10ND
2015N/A00N/A
2016N/A00N/A
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
2012-12-1149250ND
2012-12-1149253ND
2012-12-1149252ND
2012-12-1149251ND
2012-12-1149249ND
2012-12-11492481.000 ppb
2012-12-1149247ND
2012-12-11492462.00 ppb
2012-12-11492452.00 ppb
2012-12-1149244ND
2012-12-1149243ND
2013-04-03WA97-SE1-13-0536ND
2013-04-03WA97-SE1-13-0536ND
2013-04-03WA97-SE1-13-0536ND
2013-04-03WA97-SE1-13-0536ND
2013-04-03WA97-SE1-1300536ND
2013-04-03WA97-SE1-13-05361.20 ppb
2013-04-03WA97-SE1-13-0536ND
2013-04-03WA97-SE1-13-05361.000 ppb
2013-10-09WA97-SE2-13-1948ND
2013-10-09WA97-SE2-13-1948ND
2013-10-09WA97-SE2-13-1948ND
2013-10-09WA97-SE2-13-1948ND
2013-10-09WA97-SE2-13-19480.896 ppb
2013-10-09WA97-SE2-13-19480.970 ppb
2013-10-09WA97-SE2-13-1948ND
2013-10-09WA97-SE2-13-1948ND
2013-12-1053123ND
2013-12-10531222.00 ppb
2013-12-10531212.00 ppb
2013-12-1053120ND
2013-12-1053119ND
2014-10-1446279ND