Chromium (hexavalent)
Scituate Water Division
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).
20
Samples
0
Samples exceeding legal limit (MCL)
20
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.161 ppb | 10 | 10 | 0.0600 ppb - 0.370 ppb |
| 2015 | 0.117 ppb | 10 | 10 | 0.0600 ppb - 0.300 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 |
|---|---|
| 2014-07-30 | 0.110 ppb |
| 2014-07-30 | 0.0900 ppb |
| 2014-07-30 | 0.0800 ppb |
| 2014-07-30 | 0.150 ppb |
| 2014-07-31 | 0.300 ppb |
| 2014-07-31 | 0.370 ppb |
| 2014-07-31 | 0.120 ppb |
| 2014-07-31 | 0.120 ppb |
| 2014-10-16 | 0.210 ppb |
| 2014-10-16 | 0.0600 ppb |
| 2015-01-22 | 0.120 ppb |
| 2015-01-22 | 0.0700 ppb |
| 2015-01-22 | 0.150 ppb |
| 2015-01-22 | 0.0600 ppb |
| 2015-01-22 | 0.0800 ppb |
| 2015-01-22 | 0.110 ppb |
| 2015-03-12 | 0.110 ppb |
| 2015-03-12 | 0.300 ppb |
| 2015-04-14 | 0.110 ppb |
| 2015-04-14 | 0.0600 ppb |