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EWG's Tap Water Database — 2019 UPDATE

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Chromium (total)

Combine Water Supply Corporation

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

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.

 

8

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
2013N/A00N/A
2014N/A00N/A
20150.478 ppb880.271 ppb - 1.41 ppb
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

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

Date Lab ID Result
2015-02-11Q15056220010.271 ppb
2015-02-11Q15056220031.41 ppb
2015-05-26Q15190320030.451 ppb
2015-05-26Q15190320010.382 ppb
2015-08-12Q15317470030.353 ppb
2015-08-12Q15317470010.287 ppb
2015-11-23Q15464400030.292 ppb
2015-11-23Q15464400010.377 ppb