Chromium (hexavalent)
Florence Water Company
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 |
---|---|---|---|---|
2014 | 0.603 ppb | 6 | 6 | 0.410 ppb - 1.000 ppb |
2015 | 0.620 ppb | 6 | 6 | 0.470 ppb - 1.000 ppb |
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 |
---|---|---|
2014-09-18 | 3107709 | 0.540 ppb |
2014-09-18 | 3107646 | 0.540 ppb |
2014-09-18 | 3107653 | 0.410 ppb |
2014-09-18 | 3107629 | 0.480 ppb |
2014-09-19 | 3107988 | 0.650 ppb |
2014-09-19 | 3107978 | 1.000 ppb |
2015-03-20 | 3211511 | 0.760 ppb |
2015-03-20 | 3211496 | 0.490 ppb |
2015-03-20 | 3211501 | 1.000 ppb |
2015-03-20 | 3211486 | 0.470 ppb |
2015-03-20 | 3211529 | 0.490 ppb |
2015-03-20 | 3211519 | 0.510 ppb |