Chromium (hexavalent)
Dayton Valley Water 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 | 0.334 ppb | 31 | 31 | 0.0800 ppb - 0.950 ppb |
2014 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2013-02-20 | 1302601-001B | 0.610 ppb |
2013-02-20 | 1302604-001B | 0.370 ppb |
2013-02-20 | 1302608-001B | 0.150 ppb |
2013-02-20 | 1302603-001B | 0.360 ppb |
2013-02-20 | 1302595-001A | 0.210 ppb |
2013-02-20 | 1302599-001A | 0.950 ppb |
2013-02-20 | 1302598-001A | 0.0900 ppb |
2013-02-20 | 1302596-001A | 0.580 ppb |
2013-02-20 | 1302594-001A | 0.320 ppb |
2013-02-20 | 1302597-001A | 0.160 ppb |
2013-02-20 | 1302602-001B | 0.200 ppb |
2013-02-20 | 1302600-001B | 0.860 ppb |
2013-02-20 | 1302605-001B | 0.0800 ppb |
2013-02-20 | 1302606-001B | 0.570 ppb |
2013-02-20 | 1302607-001B | 0.150 ppb |
2013-06-10 | 1306237-001B | 0.220 ppb |
2013-06-10 | 1306239-001A | 0.150 ppb |
2013-08-26 | 1308882-001B | 0.310 ppb |
2013-08-26 | 1308875-001A | 0.210 ppb |
2013-08-26 | 1308880-001B | 0.430 ppb |
2013-08-26 | 1308881-001B | 0.110 ppb |
2013-08-26 | 1308885-001B | 0.0980 ppb |
2013-08-26 | 1308883-001B | 0.150 ppb |
2013-08-26 | 1308874-001A | 0.160 ppb |
2013-08-26 | 1308884-001B | 0.0800 ppb |
2013-08-26 | 1308878-001A | 0.210 ppb |
2013-08-26 | 1308877-001A | 0.270 ppb |
2013-08-26 | 1308887-001B | 0.430 ppb |
2013-08-26 | 1308886-001B | 0.830 ppb |
2013-08-26 | 1308876-001A | 0.270 ppb |
2013-08-26 | 1308879-001A | 0.780 ppb |