Chromium (hexavalent)
Truckee Meadows Water Authority
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).
45
Samples
0
Samples exceeding legal limit (MCL)
45
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | 0.619 ppb | 34 | 34 | 0.0390 ppb - 2.10 ppb |
| 2014 | 0.474 ppb | 11 | 11 | 0.0350 ppb - 0.950 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2013-05-20 | 201305210059AM | 0.880 ppb |
| 2013-05-20 | 201305210061AM | 0.880 ppb |
| 2013-05-20 | 201305210066AM | 0.370 ppb |
| 2013-05-20 | 201305210275AM | 0.630 ppb |
| 2013-05-22 | 201305230289AM | 0.930 ppb |
| 2013-05-22 | 201305230342AM | 0.370 ppb |
| 2013-05-22 | 201305230335AM | 0.530 ppb |
| 2013-05-22 | 201305230338AM | 0.380 ppb |
| 2013-06-04 | 201306050241AM | 1.000 ppb |
| 2013-06-04 | 201306050182AM | 0.370 ppb |
| 2013-06-04 | 201306050256AM | 0.0500 ppb |
| 2013-06-11 | 201306120169AM | 0.490 ppb |
| 2013-06-11 | 201306120227AM | 0.490 ppb |
| 2013-06-11 | 201306120163AM | 0.620 ppb |
| 2013-06-11 | 201306120229AM | 0.0440 ppb |
| 2013-06-11 | 201306120213AM | 0.430 ppb |
| 2013-06-11 | 201306120172AM | 0.930 ppb |
| 2013-06-19 | 201306200237AM | 0.200 ppb |
| 2013-06-19 | 201306200239AM | 0.350 ppb |
| 2013-06-19 | 201306200243AM | 0.890 ppb |
| 2013-06-19 | 201306200250AM | 0.700 ppb |
| 2013-06-19 | 201306200268AM | 1.10 ppb |
| 2013-06-19 | 201306200241AM | 1.000 ppb |
| 2013-06-19 | 201306200126AM | 1.20 ppb |
| 2013-06-24 | 201306250077AM | 0.480 ppb |
| 2013-06-25 | 201306260231AM | 2.10 ppb |
| 2013-06-25 | 201306260226AM | 2.00 ppb |
| 2013-06-27 | 201306280176AM | 0.740 ppb |
| 2013-09-17 | 201309200279AM | 0.0400 ppb |
| 2013-09-17 | 201309200267AM | 0.0390 ppb |
| 2013-09-17 | 201309200263AM | 0.220 ppb |
| 2013-11-25 | 201311270060AM | 0.480 ppb |
| 2013-12-16 | 201312180499AM | 0.0570 ppb |
| 2013-12-17 | 201312180531AM | 0.0600 ppb |
| 2014-03-05 | 201403070277AM | 0.0550 ppb |
| 2014-03-05 | 201403070313AM | 0.0390 ppb |
| 2014-04-22 | 201404250189AM | 0.330 ppb |
| 2014-04-22 | 201404250162AM | 0.450 ppb |
| 2014-04-22 | 201404250176AM | 0.950 ppb |
| 2014-04-22 | 201404250157AM | 0.860 ppb |
| 2014-04-29 | 201405020173AM | 0.550 ppb |
| 2014-04-29 | 201405020265AM | 0.720 ppb |
| 2014-04-29 | 201405020169AM | 0.840 ppb |
| 2014-04-29 | 201405020257AM | 0.380 ppb |
| 2014-06-09 | 201406110932AM | 0.0350 ppb |