Chromium (hexavalent)
Central IA Water Assn (Waverly)
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).
18
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 |
|---|---|---|---|---|
| 2014 | 0.283 ppb | 16 | 16 | 0.0470 ppb - 0.617 ppb |
| 2015 | 0.574 ppb | 2 | 2 | 0.547 ppb - 0.600 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 |
|---|---|---|
| 2014-05-27 | 166065 | 0.0470 ppb |
| 2014-05-27 | 166063 | 0.458 ppb |
| 2014-05-27 | 166045 | 0.497 ppb |
| 2014-05-27 | 166044 | 0.194 ppb |
| 2014-05-27 | 166046 | 0.0490 ppb |
| 2014-05-27 | 166062 | 0.294 ppb |
| 2014-05-27 | 166043 | 0.329 ppb |
| 2014-05-27 | 166049 | 0.344 ppb |
| 2014-08-05 | 181809 | 0.333 ppb |
| 2014-08-05 | 181808 | 0.347 ppb |
| 2014-11-17 | 203088 | 0.516 ppb |
| 2014-11-17 | 203087 | 0.299 ppb |
| 2014-11-17 | 203085 | 0.0517 ppb |
| 2014-11-17 | 203084 | 0.617 ppb |
| 2014-11-17 | 203086 | 0.102 ppb |
| 2014-11-17 | 203089 | 0.0527 ppb |
| 2015-03-30 | 225511 | 0.547 ppb |
| 2015-03-30 | 225512 | 0.600 ppb |