Chromium (hexavalent)
Swansea Water District
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).
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | N/A | 0 | 0 | N/A |
2015 | 0.0535 ppb | 24 | 17 | ND - 0.150 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 |
---|---|
2015-02-10 | 0.0870 ppb |
2015-02-10 | 0.0800 ppb |
2015-02-10 | 0.130 ppb |
2015-02-10 | 0.0800 ppb |
2015-02-12 | ND |
2015-02-12 | ND |
2015-02-12 | ND |
2015-02-12 | ND |
2015-02-12 | 0.0910 ppb |
2015-02-12 | ND |
2015-05-21 | 0.0400 ppb |
2015-05-21 | ND |
2015-05-21 | 0.0690 ppb |
2015-05-21 | 0.0460 ppb |
2015-08-13 | 0.150 ppb |
2015-08-13 | 0.0500 ppb |
2015-08-13 | 0.0640 ppb |
2015-08-13 | 0.0850 ppb |
2015-08-18 | 0.150 ppb |
2015-08-18 | 0.0600 ppb |
2015-11-12 | 0.0350 ppb |
2015-11-12 | 0.0330 ppb |
2015-11-12 | 0.0340 ppb |
2015-11-12 | ND |