Chromium (hexavalent)
Mountain Water Company
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).
52
Samples
0
Samples exceeding legal limit (MCL)
52
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | 0.159 ppb | 16 | 16 | 0.0830 ppb - 0.285 ppb |
| 2014 | 0.166 ppb | 22 | 22 | 0.0660 ppb - 0.350 ppb |
| 2015 | 0.131 ppb | 14 | 14 | 0.0890 ppb - 0.268 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 |
|---|---|---|
| 2013-05-07 | 718194-8789 | 0.169 ppb |
| 2013-05-08 | 718433-8796 | 0.0840 ppb |
| 2013-05-14 | 719477-8856 | 0.262 ppb |
| 2013-05-14 | 719520-8856 | 0.146 ppb |
| 2013-05-14 | 719518-8856 | 0.142 ppb |
| 2013-05-15 | 719821-8876 | 0.0930 ppb |
| 2013-05-15 | 719823-8876 | 0.0830 ppb |
| 2013-05-21 | 720742-8921 | 0.272 ppb |
| 2013-11-19 | 759535-10333 | 0.0830 ppb |
| 2013-11-19 | 759549-10349 | 0.277 ppb |
| 2013-11-19 | 759553-10337 | 0.166 ppb |
| 2013-11-20 | 759880-10349 | 0.121 ppb |
| 2013-11-20 | 759882-10349 | 0.1000 ppb |
| 2013-11-25 | 760466-10358 | 0.102 ppb |
| 2013-11-25 | 760469-10358 | 0.285 ppb |
| 2013-11-25 | 760458-10358 | 0.164 ppb |
| 2014-05-20 | 790721-11397 | 0.129 ppb |
| 2014-05-20 | 790729-11397 | 0.127 ppb |
| 2014-05-20 | 790731-11397 | 0.132 ppb |
| 2014-05-20 | 790745-11397 | 0.210 ppb |
| 2014-05-20 | 790723-11397 | 0.151 ppb |
| 2014-05-20 | 790727-11397 | 0.302 ppb |
| 2014-05-20 | 790725-11397 | 0.156 ppb |
| 2014-05-20 | 790747-11397 | 0.0730 ppb |
| 2014-05-21 | 792082-11435 | 0.0660 ppb |
| 2014-05-21 | 791853-11426 | 0.286 ppb |
| 2014-05-21 | 791855-11426 | 0.173 ppb |
| 2014-11-05 | 830256-12805 | 0.120 ppb |
| 2014-11-05 | 830250-12805 | 0.162 ppb |
| 2014-11-05 | 830254-12805 | 0.182 ppb |
| 2014-11-05 | 830258-12805 | 0.244 ppb |
| 2014-11-05 | 830252-12805 | 0.0860 ppb |
| 2014-11-19 | 832504-12900 | 0.104 ppb |
| 2014-11-19 | 832506-12900 | 0.152 ppb |
| 2014-11-19 | 832502-12889 | 0.139 ppb |
| 2014-11-19 | 832508-12900 | 0.350 ppb |
| 2014-11-24 | 832943-12910 | 0.233 ppb |
| 2014-11-24 | 832941-12910 | 0.0740 ppb |
| 2015-05-06 | 858622-14047 | 0.248 ppb |
| 2015-05-06 | 858627-14047 | 0.116 ppb |
| 2015-05-06 | 858624-14047 | 0.0890 ppb |
| 2015-05-06 | 858619-14047 | 0.143 ppb |
| 2015-05-12 | 859527-14100 | 0.0910 ppb |
| 2015-05-12 | 859529-14100 | 0.0990 ppb |
| 2015-05-12 | 859531-14100 | 0.104 ppb |
| 2015-11-09 | 893222-15363 | 0.109 ppb |
| 2015-11-09 | 893230-15363 | 0.0920 ppb |
| 2015-11-09 | 893224-15363 | 0.154 ppb |
| 2015-11-09 | 893228-15363 | 0.106 ppb |
| 2015-11-09 | 893226-15363 | 0.268 ppb |
| 2015-11-10 | 893564-15363 | 0.0960 ppb |
| 2015-11-17 | 894625-15414 | 0.116 ppb |