Chromium (hexavalent)
Vernon Water Department
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 | 0.212 ppb | 24 | 12 | ND - 1.10 ppb |
2015 | 0.132 ppb | 4 | 4 | 0.0340 ppb - 0.410 ppb |
2016 | ND | 1 | 0 | ND |
2017 | 0.580 ppb | 5 | 1 | ND - 2.90 ppb |
2018 | ND | 1 | 0 | ND |
2019 | 1.62 ppb | 9 | 5 | ND - 5.30 ppb |
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 |
---|---|---|
2014-04-24 | 201404250225AM | ND |
2014-04-24 | 201404250409AM | ND |
2014-04-24 | 201404250411AM | 0.650 ppb |
2014-04-24 | 201404250415AM | 0.940 ppb |
2014-04-24 | 201404250413AM | 0.0770 ppb |
2014-04-24 | 201404250223AM | ND |
2014-04-24 | 201404250227AM | 0.0810 ppb |
2014-04-24 | 201404250229AM | 0.0580 ppb |
2014-07-24 | 201407250403AM | 0.0630 ppb |
2014-07-24 | 201407250401AM | 0.0560 ppb |
2014-08-14 | 2706-005-0818 | 1.10 ppb |
2014-08-14 | 2706-009-0830 | ND |
2014-08-14 | 2706-011-0852 | ND |
2014-08-21 | 2706-014-0825 | ND |
2014-08-21 | 2706-013-0810 | ND |
2014-08-21 | 2706-006-0835 | ND |
2014-10-23 | 201410240338AM | ND |
2014-10-23 | 201410240344AM | 1.000 ppb |
2014-10-23 | 201410240346AM | 0.0330 ppb |
2014-10-23 | 201410240340AM | 0.640 ppb |
2014-10-23 | 201410240336AM | ND |
2014-10-23 | 201410240348AM | 0.400 ppb |
2014-10-23 | 201410240342AM | ND |
2014-12-11 | 2706-010-0820 | ND |
2015-01-22 | 201501230162AM | 0.0460 ppb |
2015-01-22 | 201501200174AM | 0.410 ppb |
2015-01-22 | 201501200175AM | 0.0360 ppb |
2015-07-30 | 201507310226AM | 0.0340 ppb |
2016-08-29 | 9588-009-0945 | ND |
2017-02-23 | 9588-006-0915 | ND |
2017-02-23 | 9588-011-0925 | ND |
2017-05-24 | 9588-014-0955 | ND |
2017-05-24 | 9588-010-0905 | ND |
2017-08-24 | 9588-005-0920 | 2.90 ppb |
2018-08-30 | 9588-013-0900 | ND |
2019-01-14 | 9588-010-1017 | ND |
2019-02-28 | 9588-006-0925 | ND |
2019-05-09 | 9588-010-1005 | 1.60 ppb |
2019-05-23 | 9588-014-1050 | ND |
2019-07-17 | 9588-010-0920 | 1.20 ppb |
2019-08-20 | 9588-010-0845 | 1.40 ppb |
2019-09-30 | 9588-005-1300 | 5.30 ppb |
2019-11-27 | 9588-010-0825 | ND |
2019-11-27 | 9588-005-0815 | 5.10 ppb |