Chromium (hexavalent)
Northampton Water Department
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 |
|---|---|---|---|---|
| 2013 | 0.248 ppb | 8 | 8 | 0.0370 ppb - 0.850 ppb |
| 2014 | 0.154 ppb | 8 | 6 | ND - 0.810 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|
| 2013-07-17 | 0.850 ppb |
| 2013-07-17 | 0.690 ppb |
| 2013-07-17 | 0.0820 ppb |
| 2013-07-17 | 0.0820 ppb |
| 2013-07-17 | 0.0870 ppb |
| 2013-07-17 | 0.0970 ppb |
| 2013-10-15 | 0.0370 ppb |
| 2013-10-15 | 0.0600 ppb |
| 2014-01-08 | 0.810 ppb |
| 2014-01-08 | 0.160 ppb |
| 2014-01-08 | 0.0630 ppb |
| 2014-01-08 | 0.0670 ppb |
| 2014-01-08 | 0.0650 ppb |
| 2014-01-08 | ND |
| 2014-04-10 | 0.0650 ppb |
| 2014-04-10 | ND |