Chromium (hexavalent)
Marysville Utilities
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).
28
Samples
0
Samples exceeding legal limit (MCL)
26
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.560 ppb | 14 | 13 | ND - 2.50 ppb |
| 2015 | 0.669 ppb | 14 | 13 | ND - 2.20 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 | Lab ID | Result |
|---|---|---|
| 2014-08-11 | WA97-SE1-14-1550 | 0.301 ppb |
| 2014-08-11 | WA97-SE1-14-1550 | 0.172 ppb |
| 2014-08-11 | WA97-SE1-14-1550 | ND |
| 2014-08-11 | WA97-SE1-14-1550 | 0.309 ppb |
| 2014-08-11 | WA97-SE1-14-1550 | 0.380 ppb |
| 2014-08-11 | WA97-SE1-14-1550 | 2.50 ppb |
| 2014-08-11 | WA97-SE1-14-1550 | 0.0780 ppb |
| 2014-08-11 | WA97-SE1-14-1550 | 0.498 ppb |
| 2014-11-04 | WA97-SE2-14-2188 | 2.40 ppb |
| 2014-11-04 | WA97-SE2-14-2188 | 0.236 ppb |
| 2014-11-04 | WA97-SE2-14-2188 | 0.242 ppb |
| 2014-11-04 | WA97-SE2-14-2188 | 0.260 ppb |
| 2014-11-04 | WA97-SE2-14-2188 | 0.197 ppb |
| 2014-11-04 | WA97-SE2-14-2188 | 0.270 ppb |
| 2015-02-03 | WA97-SE3-15-0216 | 0.286 ppb |
| 2015-02-03 | WA97-SE3-15-0216 | 2.19 ppb |
| 2015-02-03 | WA97-SE3-15-0216 | 0.144 ppb |
| 2015-02-03 | WA97-SE3-15-0216 | 0.518 ppb |
| 2015-02-03 | WA97-SE3-15-0216 | 0.0620 ppb |
| 2015-02-03 | WA97-SE3-15-0216 | 1.15 ppb |
| 2015-02-04 | WA97-SE3-15-0216 | 0.292 ppb |
| 2015-02-04 | WA97-SE3-15-0216 | ND |
| 2015-05-05 | WA97-SE4-15-0848 | 0.398 ppb |
| 2015-05-05 | WA97-SE4-15-0848 | 0.441 ppb |
| 2015-05-05 | WA97-SE4-15-0848 | 1.18 ppb |
| 2015-05-05 | WA97-SE4-15-0848 | 2.20 ppb |
| 2015-05-05 | WA97-SE4-15-0848 | 0.342 ppb |
| 2015-05-05 | WA97-SE4-15-0848 | 0.159 ppb |