Chromium (hexavalent)
Bellflower - Somerset MWC
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).
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.510 ppb | 24 | 17 | ND - 1.40 ppb |
| 2015 | 0.500 ppb | 14 | 14 | 0.0630 ppb - 1.40 ppb |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | 0.260 ppb | 1 | 1 | 0.260 ppb |
| 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 |
|---|---|---|
| 2014-07-23 | 4G23102-23A | 1.40 ppb |
| 2014-07-23 | 4G23102-29A | 0.620 ppb |
| 2014-07-23 | 4G23102-17A | 1.10 ppb |
| 2014-07-23 | 4G23102-21A | 0.700 ppb |
| 2014-07-23 | 4G23102-25A | 0.780 ppb |
| 2014-07-23 | 4G23102-11A | 1.20 ppb |
| 2014-07-23 | 4G23102-15A | 0.110 ppb |
| 2014-07-23 | 4G23102-13A | 0.650 ppb |
| 2014-07-23 | 4G23102-31A | 0.400 ppb |
| 2014-07-23 | 4G23102-27A | 1.20 ppb |
| 2014-07-23 | 4G23102-19A | 0.0830 ppb |
| 2014-07-23 | 4G23102-03A | 0.0480 ppb |
| 2014-07-23 | 4G23102-01A | 0.810 ppb |
| 2014-07-23 | 4G23102-07A | 1.20 ppb |
| 2014-07-23 | 4G23102-09A | 0.340 ppb |
| 2014-07-23 | 4G23102-05A | 0.500 ppb |
| 2014-10-22 | 9588-009-1113 | ND |
| 2014-10-22 | 9588-008-0959 | ND |
| 2014-10-22 | 9588-029-0941 | ND |
| 2014-10-22 | 9588-011-1058 | ND |
| 2014-10-22 | 9588-021-1034 | 1.10 ppb |
| 2014-10-22 | 9588-022-1012 | ND |
| 2014-10-22 | 9588-027-1044 | ND |
| 2014-10-22 | 9588-026-1128 | ND |
| 2015-01-30 | 5A30045-07A | 1.40 ppb |
| 2015-01-30 | 5A30045-11A | 0.630 ppb |
| 2015-01-30 | 5A30045-09A | 0.190 ppb |
| 2015-01-30 | 5A30045-01A | 1.40 ppb |
| 2015-01-30 | 5A30045-05A | 0.700 ppb |
| 2015-01-30 | 5A30045-03A | 0.0630 ppb |
| 2015-01-30 | 5A30045-15A | 0.570 ppb |
| 2015-01-30 | 5A30045-17A | 0.0650 ppb |
| 2015-01-30 | 5A30045-19A | 0.710 ppb |
| 2015-01-30 | 5A30045-25A | 0.610 ppb |
| 2015-01-30 | 5A30045-23A | 0.110 ppb |
| 2015-01-30 | 5A30045-21A | 0.330 ppb |
| 2015-01-30 | 5A30045-27A | 0.110 ppb |
| 2015-01-30 | 5A30045-13A | 0.110 ppb |
| 2017-06-01 | 0.260 ppb* |
* Sample result is taken from the system's CCR report.