Chromium (hexavalent)
JBLM Lewis
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).
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.165 ppb | 16 | 14 | ND - 0.715 ppb |
| 2015 | 0.379 ppb | 14 | 14 | 0.0610 ppb - 1.24 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 |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2014-06-09 | WA97-SE1-14-10670-25605 | 0.385 ppb |
| 2014-06-09 | WA97-SE1-14-10670-25604 | 0.134 ppb |
| 2014-06-10 | WA97-SE1-14-11079-26503 | 0.0610 ppb |
| 2014-06-10 | WA97-SE1-14-11079-26500 | 0.610 ppb |
| 2014-06-10 | WA97-SE1-14-11079-26504 | 0.0310 ppb |
| 2014-06-10 | WA97-SE1-14-11079-26501 | ND |
| 2014-06-11 | WA97-SE1-14-11079-26499 | 0.0610 ppb |
| 2014-06-11 | WA97-SE1-14-11079-26502 | 0.115 ppb |
| 2014-12-29 | 3163621 | 0.0626 ppb |
| 2014-12-29 | 3163578 | 0.135 ppb |
| 2014-12-29 | 3163592 | ND |
| 2014-12-29 | 3163667 | 0.0712 ppb |
| 2014-12-29 | 3163614 | 0.0640 ppb |
| 2014-12-29 | 3163583 | 0.143 ppb |
| 2014-12-29 | 3163639 | 0.0553 ppb |
| 2014-12-29 | 3163626 | 0.715 ppb |
| 2015-03-17 | WA97-SE1-15-05041-11621 | 0.0610 ppb |
| 2015-03-17 | WA97-SE1-15-05041-11617 | 0.0610 ppb |
| 2015-03-17 | WA97-SE1-15-05041-11619 | 1.19 ppb |
| 2015-03-17 | WA97-SE1-15-05041-11616 | 0.152 ppb |
| 2015-03-17 | WA97-SE1-15-05041-11618 | 1.24 ppb |
| 2015-03-17 | WA97-SE1-15-05041-11620 | 0.195 ppb |
| 2015-03-18 | WA97-SE1-15-05320-12207 | 0.194 ppb |
| 2015-03-18 | WA97-SE1-15-05320-12208 | 0.206 ppb |
| 2015-09-02 | 3314374 | 0.226 ppb |
| 2015-09-02 | 3314352 | 0.172 ppb |
| 2015-09-02 | 3314339 | 1.16 ppb |
| 2015-09-14 | 3322519 | 0.147 ppb |
| 2015-09-14 | 3322497 | 0.150 ppb |
| 2015-09-23 | 3328889 | 0.145 ppb |