Chromium (total)
Washington Township Mua-schoo
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 | 8 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 9 | 0 | ND |
| 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
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 |
|---|---|---|
| 2018-08-21 | L7064333-3 | ND |
| 2018-08-21 | L7064333-1 | ND |
| 2018-10-02 | L7075896-1 | ND |
| 2018-10-11 | L7078128-1 | ND |
| 2018-10-16 | L7078602-1 | ND |
| 2018-10-16 | L7078602-5 | ND |
| 2018-11-13 | L7084148-1 | ND |
| 2018-12-11 | L7089480-1 | ND |
| 2021-06-08 | 630-18243-1 | ND |
| 2021-06-08 | 630-18243-3 | ND |
| 2021-07-13 | 630-19520-2 | ND |
| 2021-07-13 | 630-19520-4 | ND |
| 2021-07-13 | 630-19520-3 | ND |
| 2021-09-21 | 630-22183-1 | ND |
| 2021-09-28 | 630-22489-1 | ND |
| 2021-09-28 | 630-22489-3 | ND |
| 2021-10-05 | 630-22730-1 | ND |