Chromium (hexavalent)
Arvin Community Services 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).
28
Samples
0
Samples exceeding legal limit (MCL)
25
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.479 ppb | 15 | 13 | ND - 1.10 ppb |
| 2015 | 0.735 ppb | 12 | 12 | 0.0440 ppb - 4.70 ppb |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 1 | 0 | ND |
| 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 |
|---|---|---|
| 2014-09-08 | 5806-001-0954 | 0.210 ppb |
| 2014-09-08 | 5806-005-0918 | 0.700 ppb |
| 2014-09-08 | 5806-006-0927 | 0.430 ppb |
| 2014-09-08 | 5806-016-0943 | ND |
| 2014-12-22 | A4L1765-19A | 0.610 ppb |
| 2014-12-22 | A4L1765-10A | 0.360 ppb |
| 2014-12-22 | A4L1765-04A | 1.10 ppb |
| 2014-12-22 | A4L1765-07A | 0.300 ppb |
| 2014-12-22 | A4L1765-34A | 0.660 ppb |
| 2014-12-22 | A4L1765-32A | 0.520 ppb |
| 2014-12-22 | A4L1765-30A | 0.630 ppb |
| 2014-12-22 | A4L1765-28A | 0.710 ppb |
| 2014-12-22 | A4L1765-16A | 0.580 ppb |
| 2014-12-22 | A4L1765-26A | 0.370 ppb |
| 2014-12-22 | A4L1765-13A | ND |
| 2015-07-27 | A5G1841-13A | 0.460 ppb |
| 2015-07-27 | A5G1841-02A | 0.650 ppb |
| 2015-07-27 | A5G1841-05A | 0.0650 ppb |
| 2015-07-27 | A5G1841-06A | 4.70 ppb |
| 2015-07-27 | A5G1841-03A | 0.410 ppb |
| 2015-07-27 | A5G1841-04A | 0.450 ppb |
| 2015-07-27 | A5G1841-01A | 0.0950 ppb |
| 2015-07-27 | A5G1841-07A | 0.0920 ppb |
| 2015-07-27 | A5G1841-08A | 0.0440 ppb |
| 2015-07-27 | A5G1841-09A | 0.860 ppb |
| 2015-07-27 | A5G1841-10A | 0.610 ppb |
| 2015-07-27 | A5G1841-11A | 0.380 ppb |
| 2017-10-10 | 5806-018-1158 | ND |