Chromium (hexavalent)
City of Lexington
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).
40
Samples
0
Samples exceeding legal limit (MCL)
34
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.321 ppb | 40 | 34 | ND - 0.600 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-05-05 | 4E06007-04 | 0.364 ppb |
| 2014-05-05 | 4E06007-10 | 0.176 ppb |
| 2014-05-05 | 4E06007-07 | 0.296 ppb |
| 2014-05-05 | 4E06007-18 | 0.337 ppb |
| 2014-05-05 | 4E06007-20 | 0.573 ppb |
| 2014-05-05 | 4E06007-24 | 0.355 ppb |
| 2014-05-05 | 4E06007-22 | 0.331 ppb |
| 2014-05-05 | 4E06007-16 | 0.184 ppb |
| 2014-05-05 | 4E06007-13 | 0.543 ppb |
| 2014-05-05 | 4E06007-01 | 0.343 ppb |
| 2014-05-06 | 4E07020-01A | 0.388 ppb |
| 2014-05-06 | 4E07020-10A | 0.179 ppb |
| 2014-05-06 | 4E07020-25A | ND |
| 2014-05-06 | 4E07020-50A | 0.449 ppb |
| 2014-05-06 | 4E07020-40A | ND |
| 2014-05-06 | 4E07020-31A | 0.292 ppb |
| 2014-05-06 | 4E07020-13A | 0.465 ppb |
| 2014-05-06 | 4E07020-38A | 0.178 ppb |
| 2014-05-06 | 4E07020-36A | 0.301 ppb |
| 2014-05-06 | 4E07020-34A | 0.297 ppb |
| 2014-05-06 | 4E07020-48A | 0.481 ppb |
| 2014-05-06 | 4E07020-04A | 0.296 ppb |
| 2014-10-06 | 4J07088-30 | 0.588 ppb |
| 2014-10-06 | 4J07088-34 | 0.531 ppb |
| 2014-10-06 | 4J07088-42 | 0.600 ppb |
| 2014-10-06 | 4J07088-32 | ND |
| 2014-10-06 | 4J07088-28 | 0.325 ppb |
| 2014-10-06 | 4J07088-36 | 0.324 ppb |
| 2014-10-06 | 4J07088-44 | 0.464 ppb |
| 2014-10-06 | 4J07088-38 | 0.407 ppb |
| 2014-10-06 | 4J07088-40 | 0.594 ppb |
| 2014-10-06 | 4J07088-13 | ND |
| 2014-10-06 | 4J07088-07 | 0.331 ppb |
| 2014-10-06 | 4J07088-10 | 0.313 ppb |
| 2014-10-06 | 4J07088-19 | ND |
| 2014-10-06 | 4J07088-22 | ND |
| 2014-10-06 | 4J07088-25 | 0.506 ppb |
| 2014-10-06 | 4J07088-04 | 0.349 ppb |
| 2014-10-06 | 4J07088-16 | 0.172 ppb |
| 2014-10-06 | 4J07088-01 | 0.492 ppb |