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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Del-Co Water Company Inc.

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.

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
20140.301 ppb1810ND - 0.840 ppb
20150.164 ppb73ND - 0.440 ppb
2016ND40ND
2017ND40ND

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
2012-01-0912-10325-01ND
2012-01-0912-10322-01AND
2012-01-0912-10323-01AND
2012-06-0512-16249-03ND
2013-01-0813-10284-01ND
2013-01-0813-10283-01AND
2013-01-0813-10282-01AND
2013-06-1013-17185-01AND
2014-01-0714-10161-03AND
2014-01-0714-10165-01AND
2014-01-0714-10164-03AND
2014-05-05201405060272AM0.390 ppb
2014-05-05201405060353AM0.360 ppb
2014-05-0714-15406-01AND
2014-05-13201405140518AMND
2014-05-13201405140512AM0.510 ppb
2014-05-21201405220455AMND
2014-06-3014-18397-01AND
2014-08-05201408060320AM0.840 ppb
2014-08-05201408060357AM0.560 ppb
2014-08-12201408130376AM0.440 ppb
2014-08-19201408210450AMND
2014-11-17201411180487AM0.830 ppb
2014-11-17201411180174AM0.480 ppb
2014-11-17201411180088AM0.600 ppb
2014-11-18201411190573AM0.400 ppb
2015-01-0515-10022-01AND
2015-01-0515-10020-01ND
2015-01-0515-10021-01AND
2015-02-10201502110510AM0.440 ppb
2015-02-10201502110515AM0.360 ppb
2015-02-11201502120616AM0.350 ppb
2015-06-0815-17517-01AND
2016-01-0416-10029-01AND
2016-01-0416-10028-01AND
2016-01-0416-10027-01ND
2016-06-0116-17762-01AND
2017-01-0317-10009-01AND
2017-01-0317-10012-01ND
2017-01-0317-10011-01ND
2017-06-1917-20888-01AND