Chromium (hexavalent)
City of Blackfoot
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).
32
Samples
0
Samples exceeding legal limit (MCL)
32
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.500 ppb | 12 | 12 | 0.120 ppb - 0.790 ppb |
| 2015 | 0.488 ppb | 20 | 20 | 0.280 ppb - 0.750 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 |
|---|---|---|
| 2014-11-24 | 35165420009AM | 0.790 ppb |
| 2014-11-24 | 35165420031AM | 0.520 ppb |
| 2014-11-24 | 35165420019AM | 0.590 ppb |
| 2014-11-24 | 35165420003AM | 0.460 ppb |
| 2014-11-24 | 35165420007AM | 0.120 ppb |
| 2014-11-24 | 35165420005AM | 0.710 ppb |
| 2014-11-24 | 35165420011AM | 0.330 ppb |
| 2014-11-24 | 35165420015AM | 0.340 ppb |
| 2014-11-24 | 35165420013AM | 0.580 ppb |
| 2014-11-24 | 35165420025AM | 0.560 ppb |
| 2014-11-24 | 35165420023AM | 0.340 ppb |
| 2014-11-24 | 35165420027AM | 0.660 ppb |
| 2015-02-17 | 35176445001AM | 0.750 ppb |
| 2015-02-17 | 35176445002AM | 0.420 ppb |
| 2015-02-17 | 35176445003AM | 0.730 ppb |
| 2015-02-17 | 35176445004AM | 0.320 ppb |
| 2015-05-19 | 35189241001AM | 0.740 ppb |
| 2015-05-19 | 35189241007AM | 0.740 ppb |
| 2015-05-19 | 35189241031AM | 0.380 ppb |
| 2015-05-19 | 35189241003AM | 0.390 ppb |
| 2015-05-19 | 35189241009AM | 0.300 ppb |
| 2015-05-19 | 35189241019AM | 0.490 ppb |
| 2015-05-19 | 35189241021AM | 0.750 ppb |
| 2015-05-19 | 35189241015AM | 0.740 ppb |
| 2015-05-19 | 35189241029AM | 0.310 ppb |
| 2015-05-19 | 35189241005AM | 0.450 ppb |
| 2015-05-19 | 35189241011AM | 0.430 ppb |
| 2015-05-19 | 35189241025AM | 0.400 ppb |
| 2015-05-19 | 35189241023AM | 0.280 ppb |
| 2015-05-19 | 35189241027AM | 0.450 ppb |
| 2015-05-19 | 35189241017AM | 0.380 ppb |
| 2015-05-19 | 35189241013AM | 0.300 ppb |