Chromium (hexavalent)
City of Coeur D Alene
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).
40
Samples
0
Samples exceeding legal limit (MCL)
39
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.156 ppb | 18 | 17 | ND - 0.291 ppb |
| 2015 | 0.175 ppb | 22 | 22 | 0.0390 ppb - 0.312 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 |
|---|---|---|
| 2014-09-22 | WA97-SE2-14-1911 | 0.0990 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.105 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.194 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.233 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.104 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.190 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.118 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.290 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.0870 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | ND |
| 2014-09-22 | WA97-SE2-14-1911 | 0.101 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.262 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.193 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.211 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.291 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.0450 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.1000 ppb |
| 2014-09-22 | WA97-SE2-14-1911 | 0.185 ppb |
| 2015-01-20 | WA97-SE2-15-0147 | 0.109 ppb |
| 2015-01-20 | WA97-SE2-15-0147 | 0.103 ppb |
| 2015-01-20 | WA97-SE1-15-0147 | 0.261 ppb |
| 2015-01-20 | WA97-SE1-15-0147 | 0.264 ppb |
| 2015-06-08 | WA97-SE2-15-1213 | 0.0920 ppb |
| 2015-06-08 | WA97-SE2-15-1213 | 0.0390 ppb |
| 2015-06-08 | WA97-SE2-15-1213 | 0.197 ppb |
| 2015-06-08 | WA97-SE2-15-1213 | 0.220 ppb |
| 2015-06-08 | WA97-SE2-15-1213 | 0.0850 ppb |
| 2015-06-08 | WA97-SE2-15-1213 | 0.219 ppb |
| 2015-06-08 | WA97-SE2-15-1213 | 0.208 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.273 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.194 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.253 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.0390 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.0960 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.0940 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.312 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.113 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.288 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.198 ppb |
| 2015-06-09 | WA97-SE2-15-1213 | 0.196 ppb |