Chromium (hexavalent)
Green Valley SUD
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).
46
Samples
0
Samples exceeding legal limit (MCL)
45
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | 0.101 ppb | 46 | 45 | ND - 0.546 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 |
|---|---|---|
| 2013-01-22 | 3A25004-16 | 0.0848 ppb |
| 2013-01-22 | 3A25004-06 | 0.101 ppb |
| 2013-01-22 | 3A25004-02 | 0.108 ppb |
| 2013-01-22 | 3A25004-05 | 0.0795 ppb |
| 2013-01-22 | 3A25004-04 | 0.130 ppb |
| 2013-01-22 | 3A25004-15 | 0.0706 ppb |
| 2013-01-22 | 3A25004-13 | 0.114 ppb |
| 2013-01-22 | 3A25004-14 | 0.0559 ppb |
| 2013-01-22 | 3A25004-08 | 0.0684 ppb |
| 2013-01-22 | 3A25004-07 | 0.0611 ppb |
| 2013-01-22 | 3A25004-01 | 0.0649 ppb |
| 2013-01-22 | 3A25004-03 | 0.115 ppb |
| 2013-01-22 | 3A25004-09 | 0.0419 ppb |
| 2013-01-22 | 3A25004-12 | 0.103 ppb |
| 2013-01-22 | 3A25004-11 | 0.546 ppb |
| 2013-01-22 | 3A25004-10 | 0.1000 ppb |
| 2013-04-25 | 3E03017-06 | 0.0742 ppb |
| 2013-04-25 | 3E03017-05 | 0.189 ppb |
| 2013-04-25 | 3E03017-07 | 0.169 ppb |
| 2013-04-25 | 3E03017-02 | 0.0776 ppb |
| 2013-04-25 | 3E03017-01 | 0.180 ppb |
| 2013-04-25 | 3E03017-03 | 0.171 ppb |
| 2013-04-25 | 3E03017-04 | 0.0769 ppb |
| 2013-04-25 | 3E03017-08 | 0.0789 ppb |
| 2013-07-16 | 3G23009-10 | 0.111 ppb |
| 2013-07-16 | 3G23009-04 | 0.0467 ppb |
| 2013-07-16 | 3G23009-01 | 0.0403 ppb |
| 2013-07-16 | 3G23009-02 | 0.0327 ppb |
| 2013-07-16 | 3G23009-12 | ND |
| 2013-07-16 | 3G23009-03 | 0.0496 ppb |
| 2013-07-16 | 3G23009-09 | 0.0470 ppb |
| 2013-07-16 | 3G23009-08 | 0.0402 ppb |
| 2013-07-16 | 3G23009-06 | 0.0863 ppb |
| 2013-07-16 | 3G23009-05 | 0.0890 ppb |
| 2013-07-16 | 3G23009-13 | 0.197 ppb |
| 2013-07-16 | 3G23009-14 | 0.0681 ppb |
| 2013-07-16 | 3G23009-07 | 0.0453 ppb |
| 2013-07-16 | 3G23009-11 | 0.0885 ppb |
| 2013-07-25 | 3G30007-01 | 0.0449 ppb |
| 2013-10-29 | 3J31005-06A | 0.0920 ppb |
| 2013-10-29 | 3J31005-07A | 0.113 ppb |
| 2013-10-29 | 3J31005-05A | 0.127 ppb |
| 2013-10-29 | 3J31005-04A | 0.0840 ppb |
| 2013-10-29 | 3J31005-03A | 0.0770 ppb |
| 2013-10-29 | 3J31005-02A | 0.188 ppb |
| 2013-10-29 | 3J31005-01A | 0.123 ppb |