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EWG's Tap Water Database — 2019 UPDATE

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Chromium (hexavalent)

Combine Water Supply Corporation

NOTE: Combine Water Supply Corporation purchases water from City of Seagoville which is required to test for chromium (hexavalent). Sample information shown below was taken by City of Seagoville.

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).

 

8

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
20150.185 ppb880.116 ppb - 0.226 ppb
2016N/A00N/A
2017N/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

NOTE: Combine Water Supply Corporation purchases water from City of Seagoville which is required to test for chromium (hexavalent). Sample information shown below was taken by City of Seagoville.

Date Lab ID Result
2015-02-115B13020-010.116 ppb
2015-02-115B13020-020.146 ppb
2015-05-265E29017-020.211 ppb
2015-05-265E29017-010.199 ppb
2015-08-125H14007-020.226 ppb
2015-08-125H14007-010.189 ppb
2015-11-235L02009-020.218 ppb
2015-11-235L02009-010.178 ppb