Chromium (hexavalent)
City of Elko
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).
68
Samples
0
Samples exceeding legal limit (MCL)
68
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | 0.680 ppb | 68 | 68 | 0.180 ppb - 1.30 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 |
|---|---|---|
| 2015-05-11 | A5E0070-07A | 1.30 ppb |
| 2015-05-11 | A5E0070-22A | 0.440 ppb |
| 2015-05-11 | A5E0070-25A | 0.490 ppb |
| 2015-05-11 | A5E0070-19A | 0.660 ppb |
| 2015-05-11 | A5E0070-04A | 0.980 ppb |
| 2015-05-11 | A5E0070-01A | 0.690 ppb |
| 2015-05-11 | A5E0070-10A | 0.680 ppb |
| 2015-05-11 | A5E0070-13A | 0.490 ppb |
| 2015-05-12 | A5E0070-64A | 0.710 ppb |
| 2015-05-12 | A5E0070-78A | 0.570 ppb |
| 2015-05-12 | A5E0070-74A | 1.30 ppb |
| 2015-05-12 | A5E0070-72A | 0.820 ppb |
| 2015-05-12 | A5E0070-70A | 0.720 ppb |
| 2015-05-12 | A5E0070-84A | 0.690 ppb |
| 2015-05-12 | A5E0070-46A | 0.720 ppb |
| 2015-05-12 | A5E0070-68A | 0.490 ppb |
| 2015-05-12 | A5E0070-58A | 0.970 ppb |
| 2015-05-12 | A5E0070-62A | 0.750 ppb |
| 2015-05-12 | A5E0070-66A | 0.740 ppb |
| 2015-05-12 | A5E0070-31A | 0.630 ppb |
| 2015-05-12 | A5E0070-34A | 0.710 ppb |
| 2015-05-12 | A5E0070-28A | 1.30 ppb |
| 2015-05-12 | A5E0070-40A | 0.500 ppb |
| 2015-05-12 | A5E0070-82A | 0.730 ppb |
| 2015-05-12 | A5E0070-43A | 0.920 ppb |
| 2015-05-12 | A5E0070-49A | 0.680 ppb |
| 2015-05-12 | A5E0070-16A | 0.540 ppb |
| 2015-05-13 | A5E0070-37A | 0.180 ppb |
| 2015-05-13 | A5E0070-52A | 0.680 ppb |
| 2015-05-13 | A5E0070-54A | 0.970 ppb |
| 2015-05-13 | A5E0070-56A | 1.30 ppb |
| 2015-05-13 | A5E0070-60A | 0.670 ppb |
| 2015-05-13 | A5E0070-76A | 0.860 ppb |
| 2015-05-13 | A5E0070-80A | 0.880 ppb |
| 2015-11-16 | A5J2251-43A | 0.880 ppb |
| 2015-11-16 | A5J2251-10A | 0.960 ppb |
| 2015-11-16 | A5J2251-58A | 0.830 ppb |
| 2015-11-16 | A5J2251-78A | 0.520 ppb |
| 2015-11-16 | A5J2251-76A | 0.780 ppb |
| 2015-11-16 | A5J2251-80A | 0.860 ppb |
| 2015-11-16 | A5J2251-34A | 0.440 ppb |
| 2015-11-16 | A5J2251-74A | 0.910 ppb |
| 2015-11-16 | A5J2251-40A | 0.490 ppb |
| 2015-11-16 | A5J2251-37A | 0.210 ppb |
| 2015-11-17 | A5J2251-60A | 0.440 ppb |
| 2015-11-17 | A5J2251-01A | 0.810 ppb |
| 2015-11-17 | A5J2251-13A | 0.920 ppb |
| 2015-11-17 | A5J2251-46A | 0.180 ppb |
| 2015-11-17 | A5J2251-49A | 0.270 ppb |
| 2015-11-17 | A5J2251-07A | 0.650 ppb |
| 2015-11-17 | A5J2251-70A | 0.760 ppb |
| 2015-11-17 | A5J2251-84A | 0.600 ppb |
| 2015-11-17 | A5J2251-82A | 0.420 ppb |
| 2015-11-17 | A5J2251-56A | 0.960 ppb |
| 2015-11-17 | A5J2251-52A | 0.830 ppb |
| 2015-11-18 | A5J2251-25A | 0.390 ppb |
| 2015-11-18 | A5J2251-19A | 0.430 ppb |
| 2015-11-18 | A5J2251-16A | 0.460 ppb |
| 2015-11-18 | A5J2251-22A | 0.380 ppb |
| 2015-11-18 | A5J2251-62A | 0.420 ppb |
| 2015-11-18 | A5J2251-64A | 0.400 ppb |
| 2015-11-18 | A5J2251-66A | 0.420 ppb |
| 2015-11-18 | A5J2251-04A | 0.330 ppb |
| 2015-11-18 | A5J2251-31A | 0.610 ppb |
| 2015-11-18 | A5J2251-72A | 0.880 ppb |
| 2015-11-18 | A5J2251-54A | 0.830 ppb |
| 2015-11-18 | A5J2251-68A | 0.370 ppb |
| 2015-12-03 | A5K1960-01A | 0.830 ppb |