Chromium (hexavalent)
San Antonio Water System Northeast
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).
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | 0.131 ppb | 10 | 10 | 0.0790 ppb - 0.180 ppb |
2014 | 0.0807 ppb | 14 | 14 | 0.0640 ppb - 0.0940 ppb |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | N/A | 0 | 0 | N/A |
2018 | N/A | 0 | 0 | N/A |
2019 | N/A | 0 | 0 | N/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 |
---|---|---|
2013-10-08 | 201310110250AM | 0.120 ppb |
2013-10-08 | 201310110248AM | 0.0840 ppb |
2013-10-08 | 201310110252AM | 0.0790 ppb |
2013-10-08 | 201310110258AM | 0.150 ppb |
2013-10-08 | 201310110246AM | 0.180 ppb |
2013-10-08 | 201310110242AM | 0.140 ppb |
2013-10-08 | 201310110256AM | 0.150 ppb |
2013-10-08 | 201310110254AM | 0.110 ppb |
2013-10-08 | 201310110260AM | 0.160 ppb |
2013-10-08 | 201310110244AM | 0.140 ppb |
2014-01-24 | 201401270007AM | 0.0940 ppb |
2014-02-21 | 201402220103AM | 0.0900 ppb |
2014-04-14 | 201404150341AM | 0.0810 ppb |
2014-04-14 | 201404150347AM | 0.0900 ppb |
2014-04-14 | 201404150337AM | 0.0770 ppb |
2014-04-14 | 201404150335AM | 0.0940 ppb |
2014-04-14 | 201404150343AM | 0.0760 ppb |
2014-04-14 | 201404150333AM | 0.0820 ppb |
2014-04-14 | 201404150339AM | 0.0780 ppb |
2014-04-14 | 201404150345AM | 0.0780 ppb |
2014-04-15 | 201404160662AM | 0.0830 ppb |
2014-04-15 | 201404160660AM | 0.0770 ppb |
2014-07-25 | 201407260066AM | 0.0660 ppb |
2014-07-25 | 201407260068AM | 0.0640 ppb |