Chromium (hexavalent)
Metropolitan DWID
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 | 0.177 ppb | 44 | 43 | ND - 0.620 ppb |
2015 | 0.260 ppb | 44 | 44 | 0.0550 ppb - 3.00 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 |
---|---|---|
2014-08-06 | 201408070497AM | 0.0700 ppb |
2014-08-06 | 201408070495AM | 0.400 ppb |
2014-08-11 | 201408120137AM | 0.240 ppb |
2014-08-11 | 201408120139AM | 0.300 ppb |
2014-08-11 | 201408120145AM | 0.200 ppb |
2014-08-11 | 201408120149AM | 0.200 ppb |
2014-08-11 | 201408120151AM | 0.200 ppb |
2014-08-11 | 201408120143AM | 0.260 ppb |
2014-08-11 | 201408120141AM | 0.350 ppb |
2014-08-11 | 201408120147AM | 0.200 ppb |
2014-08-12 | 201408130510AM | 0.120 ppb |
2014-08-12 | 201408130504AM | 0.170 ppb |
2014-08-12 | 201408130508AM | 0.0960 ppb |
2014-08-12 | 201408130498AM | 0.110 ppb |
2014-08-12 | 201408130506AM | 0.230 ppb |
2014-08-12 | 201408130500AM | 0.180 ppb |
2014-08-12 | 201408130502AM | 0.110 ppb |
2014-08-12 | 201408130512AM | 0.220 ppb |
2014-08-14 | 201408150334AM | 0.0860 ppb |
2014-08-14 | 201408150338AM | 0.0810 ppb |
2014-08-14 | 201408150336AM | 0.140 ppb |
2014-08-14 | 201408150342AM | 0.0800 ppb |
2014-08-14 | 201408150340AM | 0.140 ppb |
2014-08-18 | 201408190500AM | 0.110 ppb |
2014-08-18 | 201408190498AM | 0.0990 ppb |
2014-08-18 | 201408190665AM | 0.240 ppb |
2014-08-18 | 201408190667AM | 0.110 ppb |
2014-08-18 | 201408190496AM | 0.1000 ppb |
2014-08-18 | 201408190663AM | 0.150 ppb |
2014-08-19 | 201408200439AM | 0.130 ppb |
2014-08-19 | 201408200433AM | ND |
2014-08-19 | 201408200415AM | 0.0720 ppb |
2014-08-19 | 201408200435AM | 0.0590 ppb |
2014-08-19 | 201408200419AM | 0.0690 ppb |
2014-08-19 | 201408200417AM | 0.0740 ppb |
2014-08-19 | 201408200437AM | 0.0650 ppb |
2014-08-20 | 201408210492AM | 0.320 ppb |
2014-08-20 | 201408210482AM | 0.200 ppb |
2014-08-20 | 201408210488AM | 0.250 ppb |
2014-08-20 | 201408210480AM | 0.620 ppb |
2014-08-20 | 201408210490AM | 0.160 ppb |
2014-08-20 | 201408210484AM | 0.220 ppb |
2014-08-25 | 201408260297AM | 0.250 ppb |
2014-09-22 | 201409230534AM | 0.300 ppb |
2015-02-17 | 201502180791AM | 1.60 ppb |
2015-02-17 | 201502180797AM | 0.210 ppb |
2015-02-17 | 201502180766AM | 0.280 ppb |
2015-02-17 | 201502180795AM | 0.120 ppb |
2015-02-17 | 201502180770AM | 0.280 ppb |
2015-02-17 | 201502180793AM | 0.130 ppb |
2015-02-18 | 201502190975AM | 0.120 ppb |
2015-02-18 | 201502190761AM | 3.00 ppb |
2015-02-18 | 201502190763AM | 0.130 ppb |
2015-02-18 | 201502190759AM | 0.140 ppb |
2015-02-18 | 201502190757AM | 0.200 ppb |
2015-02-19 | 201502200386AM | 0.0550 ppb |
2015-02-19 | 201502200211AM | 0.130 ppb |
2015-02-19 | 201502200213AM | 0.120 ppb |
2015-02-19 | 201502200207AM | 0.140 ppb |
2015-02-19 | 201502200384AM | 0.0860 ppb |
2015-02-19 | 201502200382AM | 0.0780 ppb |
2015-02-23 | 201502240516AM | 0.160 ppb |
2015-02-23 | 201502240514AM | 0.160 ppb |
2015-02-23 | 201502240502AM | 0.240 ppb |
2015-02-23 | 201502240504AM | 0.260 ppb |
2015-02-23 | 201502240506AM | 0.290 ppb |
2015-02-23 | 201502240508AM | 0.180 ppb |
2015-02-23 | 201502240510AM | 0.160 ppb |
2015-02-24 | 201502250889AM | 0.0660 ppb |
2015-02-24 | 201502250887AM | 0.360 ppb |
2015-02-24 | 201502250596AM | 0.200 ppb |
2015-02-24 | 201502250592AM | 0.220 ppb |
2015-02-24 | 201502250594AM | 0.140 ppb |
2015-02-24 | 201502250590AM | 0.130 ppb |
2015-02-24 | 201502250588AM | 0.200 ppb |
2015-02-24 | 201502250600AM | 0.180 ppb |
2015-02-24 | 201502250602AM | 0.270 ppb |
2015-02-24 | 201502250598AM | 0.130 ppb |
2015-02-25 | 201502260401AM | 0.0820 ppb |
2015-02-25 | 201502260403AM | 0.0880 ppb |
2015-02-25 | 201502260399AM | 0.140 ppb |
2015-02-25 | 201502260397AM | 0.160 ppb |
2015-02-25 | 201502260405AM | 0.0960 ppb |
2015-03-04 | 201503060401AM | 0.0650 ppb |
2015-03-04 | 201503060400AM | 0.120 ppb |
2015-03-10 | 201503110622AM | 0.160 ppb |
2015-03-23 | 201503100115AM | 0.280 ppb |
2015-08-31 | 201509010996AM | 0.0960 ppb |