Chromium (total)
Junction City Waterworks
Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | 12.0 ppb | 1 | 1 | 12.0 ppb |
| 2023 | 7.45 ppb | 2 | 2 | 2.70 ppb - 12.2 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 100 ppb
The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-05-01 | Y181230004 | ND |
| 2019-05-13 | Y191360055 | ND |
| 2020-01-28 | Y200300005 | ND |
| 2020-06-15 | Y201700024 | ND |
| 2021-04-20 | Y211110025 | ND |
| 2022-05-23 | Y221460055 | 12.0 ppb |
| 2023-01-31 | Y230330008 | 2.70 ppb |
| 2023-05-30 | Y231520035 | 12.2 ppb |