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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

City of Waco

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
20150.0165 ppb249ND - 0.0640 ppb
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
2015-03-2635181337005AMND
2015-03-2635181337013AMND
2015-03-2635181337015AMND
2015-03-2635181337007AMND
2015-03-2635181337011AMND
2015-03-2635181337009AMND
2015-05-2735190256007AMND
2015-05-2735190256009AMND
2015-07-3015080819-0030.0320 ppb
2015-07-3015080819-004ND
2015-07-3015080819-002ND
2015-07-3015080819-001ND
2015-09-2835209341013AM0.0470 ppb
2015-09-2835209341005AM0.0370 ppb
2015-09-2835209341007AM0.0380 ppb
2015-09-2835209341003AMND
2015-09-2835209341011AMND
2015-09-2835209341009AMND
2015-09-2835209341001AMND
2015-09-2835209341015AM0.0350 ppb
2015-12-2135222235003AM0.0590 ppb
2015-12-2135222235005AM0.0390 ppb
2015-12-2135222235007AM0.0440 ppb
2015-12-2135222235001AM0.0640 ppb