Chromium (hexavalent)
City of League City
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).
35
Samples
0
Samples exceeding legal limit (MCL)
33
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.0415 ppb | 18 | 17 | ND - 0.0602 ppb |
| 2015 | 0.0439 ppb | 17 | 16 | ND - 0.0637 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 |
|---|---|---|
| 2014-09-09 | 4I12008-08 | 0.0486 ppb |
| 2014-09-09 | 4I12008-13 | 0.0473 ppb |
| 2014-09-09 | 4I12008-12 | 0.0510 ppb |
| 2014-09-09 | 4I12008-11 | 0.0482 ppb |
| 2014-09-09 | 4I12008-10 | 0.0479 ppb |
| 2014-09-09 | 4I12008-14 | 0.0405 ppb |
| 2014-09-09 | 4I12008-02 | 0.0304 ppb |
| 2014-09-09 | 4I12008-03 | 0.0381 ppb |
| 2014-09-09 | 4I12008-07 | 0.0449 ppb |
| 2014-09-09 | 4I12008-04 | 0.0445 ppb |
| 2014-09-09 | 4I12008-06 | 0.0409 ppb |
| 2014-09-09 | 4I12008-05 | 0.0418 ppb |
| 2014-09-09 | 4I12008-01 | 0.0374 ppb |
| 2014-09-09 | 4I12008-09 | 0.0474 ppb |
| 2014-12-08 | 4L11016-01 | ND |
| 2014-12-08 | 4L11016-02 | 0.0602 ppb |
| 2014-12-08 | 4L11016-03 | 0.0421 ppb |
| 2014-12-08 | 4L11016-04 | 0.0356 ppb |
| 2015-03-17 | 5C20009-06 | 0.0318 ppb |
| 2015-03-17 | 5C20009-04 | 0.0375 ppb |
| 2015-03-17 | 5C20009-01 | 0.0357 ppb |
| 2015-03-17 | 5C20009-03 | 0.0417 ppb |
| 2015-03-17 | 5C20009-12 | 0.0409 ppb |
| 2015-03-17 | 5C20009-11 | 0.0439 ppb |
| 2015-03-17 | 5C20009-10 | 0.0496 ppb |
| 2015-03-17 | 5C20009-13 | 0.0620 ppb |
| 2015-03-17 | 5C20009-09 | 0.0565 ppb |
| 2015-03-17 | 5C20009-08 | 0.0613 ppb |
| 2015-03-17 | 5C20009-07 | 0.0637 ppb |
| 2015-03-17 | 5C20009-05 | 0.0381 ppb |
| 2015-03-17 | 5C20009-02 | 0.0490 ppb |
| 2015-06-24 | 5G01011-01 | 0.0374 ppb |
| 2015-06-24 | 5G01011-04 | 0.0500 ppb |
| 2015-06-24 | 5G01011-03 | 0.0475 ppb |
| 2015-06-24 | 5G01011-02 | ND |