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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

Dover Water Department

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

 

36

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.111 ppb355ND - 1.70 ppb
2015ND10ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

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
2014-03-24201403250145AMND
2014-03-24201403250132AM0.170 ppb
2014-03-24201403250143AMND
2014-03-24201403250127AMND
2014-03-25201403270282AMND
2014-03-25201403270318AMND
2014-03-25201403270433AMND
2014-03-25201403270321AMND
2014-03-25201403270437AM1.40 ppb
2014-03-26201403270425AMND
2014-03-26201403270427AMND
2014-03-26201403270306AMND
2014-03-26201403270429AMND
2014-03-26201403270400AMND
2014-03-26201403270206AMND
2014-03-26201403270163AMND
2014-03-31201404010215AM0.210 ppb
2014-09-16201409180277AMND
2014-09-16201409170723AMND
2014-09-16201409170760AMND
2014-09-16201409170855AMND
2014-09-16201409170752AMND
2014-09-17201409180639AMND
2014-09-17201409190310AMND
2014-09-17201409190318AMND
2014-09-17201409180627AMND
2014-09-17201409180608AMND
2014-09-22201409230332AM1.70 ppb
2014-09-22201409230467AMND
2014-09-22201409230406AMND
2014-09-23201409240342AMND
2014-09-23201409240352AM0.390 ppb
2014-09-23201409240394AMND
2014-09-23201409240385AMND
2014-09-24201409250535AMND
2015-03-12201503140140AMND