Chromium (hexavalent)
Valley of The Moon 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 | 0.515 ppb | 15 | 11 | ND - 1.40 ppb |
2015 | 0.641 ppb | 10 | 10 | 0.400 ppb - 1.40 ppb |
2016 | N/A | 0 | 0 | N/A |
2017 | N/A | 0 | 0 | N/A |
2018 | ND | 2 | 0 | ND |
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 |
---|---|---|
2014-10-13 | 5810-001-0958 | ND |
2014-10-13 | 5810-002-1106 | ND |
2014-10-13 | 5810-003-0838 | 1.40 ppb |
2014-10-13 | 5810-004-1026 | ND |
2014-10-13 | 5810-005-1011 | ND |
2014-11-04 | A4J2567-04A | 0.640 ppb |
2014-11-04 | A4J2567-10A | 0.660 ppb |
2014-11-04 | A4J2567-20A | 0.330 ppb |
2014-11-04 | A4J2567-16A | 0.290 ppb |
2014-11-04 | A4J2567-18A | 0.890 ppb |
2014-11-04 | A4J2567-22A | 0.450 ppb |
2014-11-04 | A4J2567-24A | 0.450 ppb |
2014-11-04 | A4J2567-01A | 0.490 ppb |
2014-11-04 | A4J2567-13A | 0.720 ppb |
2014-11-04 | A4J2567-07A | 1.40 ppb |
2015-05-19 | A5D2590-07A | 1.40 ppb |
2015-05-19 | A5D2590-10A | 0.610 ppb |
2015-05-19 | A5D2590-01A | 0.690 ppb |
2015-05-19 | A5D2590-04A | 0.550 ppb |
2015-05-19 | A5D2590-18A | 0.850 ppb |
2015-05-19 | A5D2590-16A | 0.400 ppb |
2015-05-19 | A5D2590-22A | 0.410 ppb |
2015-05-19 | A5D2590-20A | 0.430 ppb |
2015-05-19 | A5D2590-24A | 0.480 ppb |
2015-05-19 | A5D2590-13A | 0.590 ppb |
2018-01-11 | 5810-024-1232 | ND |
2018-01-11 | 5810-019-1232 | ND |