Chromium (hexavalent)
Nashville Water Department #1
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).
16
Samples
0
Samples exceeding legal limit (MCL)
14
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | 0.0805 ppb | 16 | 14 | ND - 0.167 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 | Result |
|---|---|
| 2015-01-06 | 0.0890 ppb |
| 2015-01-06 | 0.0850 ppb |
| 2015-01-06 | 0.0610 ppb |
| 2015-01-06 | 0.0430 ppb |
| 2015-04-22 | 0.0990 ppb |
| 2015-04-22 | 0.159 ppb |
| 2015-04-22 | 0.108 ppb |
| 2015-04-22 | ND |
| 2015-08-11 | 0.167 ppb |
| 2015-08-11 | 0.152 ppb |
| 2015-08-11 | 0.0450 ppb |
| 2015-08-11 | 0.0650 ppb |
| 2015-10-19 | ND |
| 2015-10-19 | 0.0440 ppb |
| 2015-10-19 | 0.0920 ppb |
| 2015-10-19 | 0.0790 ppb |