Chromium (hexavalent)
Orem City 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).
23
Samples
0
Samples exceeding legal limit (MCL)
18
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | 0.732 ppb | 9 | 9 | 0.116 ppb - 1.86 ppb |
| 2014 | 0.640 ppb | 10 | 9 | ND - 1.83 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 4 | 0 | ND |
| 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 | Result |
|---|---|
| 2013-09-10 | 0.474 ppb |
| 2013-09-10 | 0.148 ppb |
| 2013-09-10 | 0.116 ppb |
| 2013-09-10 | 1.86 ppb |
| 2013-09-10 | 0.663 ppb |
| 2013-09-10 | 0.864 ppb |
| 2013-09-10 | 1.34 ppb |
| 2013-12-10 | 0.137 ppb |
| 2013-12-10 | 0.990 ppb |
| 2014-03-17 | 0.213 ppb |
| 2014-03-17 | 0.156 ppb |
| 2014-03-17 | 1.40 ppb |
| 2014-03-17 | 0.819 ppb |
| 2014-03-17 | 0.492 ppb |
| 2014-04-29 | 1.83 ppb |
| 2014-04-29 | 0.548 ppb |
| 2014-06-09 | 0.0895 ppb |
| 2014-06-09 | 0.852 ppb |
| 2014-07-29 | ND |
| 2016-06-15 | ND |
| 2016-06-15 | ND |
| 2016-06-15 | ND |
| 2016-06-15 | ND |