Chromium (hexavalent)
Aquarion Water Company of Connecticut - Valley System
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 | 0.0616 ppb | 14 | 13 | ND - 0.120 ppb |
2014 | 0.0445 ppb | 2 | 2 | 0.0360 ppb - 0.0530 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 |
---|---|---|
2013-06-06 | 201306070098AM | 0.0530 ppb |
2013-06-06 | 201306070226AM | 0.0670 ppb |
2013-06-06 | 201306070232AM | 0.1000 ppb |
2013-06-06 | 201306070298AM | 0.0410 ppb |
2013-06-06 | 201306070273AM | ND |
2013-06-06 | 201306070176AM | 0.0300 ppb |
2013-09-05 | 201309060394AM | 0.120 ppb |
2013-09-05 | 201309060358AM | 0.110 ppb |
2013-12-03 | 201312040688AM | 0.0580 ppb |
2013-12-03 | 201312040936AM | 0.110 ppb |
2013-12-03 | 201312040656AM | 0.0450 ppb |
2013-12-03 | 201312040722AM | 0.0340 ppb |
2013-12-03 | 201312040681AM | 0.0550 ppb |
2013-12-03 | 201312040709AM | 0.0390 ppb |
2014-03-19 | 201403200579AM | 0.0360 ppb |
2014-03-19 | 201403200271AM | 0.0530 ppb |