Chromium (hexavalent)
City of Bellaire
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).
20
Samples
0
Samples exceeding legal limit (MCL)
16
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.0803 ppb | 10 | 8 | ND - 0.176 ppb |
| 2015 | 0.0343 ppb | 10 | 8 | ND - 0.0693 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 |
|---|---|---|
| 2014-09-25 | 4I30036-01 | 0.152 ppb |
| 2014-09-25 | 4I30036-02 | 0.176 ppb |
| 2014-09-25 | 4I30036-06 | 0.147 ppb |
| 2014-09-25 | 4I30036-09 | 0.0424 ppb |
| 2014-09-25 | 4I30036-08 | ND |
| 2014-09-25 | 4I30036-04 | 0.0916 ppb |
| 2014-09-25 | 4I30036-03 | ND |
| 2014-09-25 | 4I30036-05 | 0.126 ppb |
| 2014-12-04 | 4L09028-01 | 0.0350 ppb |
| 2014-12-04 | 4L09028-02 | 0.0334 ppb |
| 2015-03-24 | 5C27006-03 | ND |
| 2015-03-24 | 5C27006-01 | ND |
| 2015-03-24 | 5C27006-02 | 0.0393 ppb |
| 2015-03-24 | 5C27006-05 | 0.0350 ppb |
| 2015-03-24 | 5C27006-07 | 0.0358 ppb |
| 2015-03-24 | 5C27006-08 | 0.0365 ppb |
| 2015-03-24 | 5C27006-06 | 0.0350 ppb |
| 2015-03-24 | 5C27006-04 | 0.0401 ppb |
| 2015-07-20 | 5G22004-02 | 0.0521 ppb |
| 2015-07-20 | 5G22004-01 | 0.0693 ppb |