Chromium (total)
Hamburg Municipal Water&sewer Authority
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 | 3 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
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 |
|---|---|---|
| 2018-01-10 | 7028620-01 | ND |
| 2018-03-28 | 8007560-01 | ND |
| 2018-03-28 | 8007562-01 | ND |
| 2019-05-08 | 9009392-01 | ND |
| 2020-08-19 | 22841411.00 | ND |
| 2021-04-14 | 24288628.00 | ND |
| 2021-04-14 | 24288629.00 | ND |
| 2022-03-02 | 26327217.00 | ND |
| 2022-03-09 | 26327189.00 | ND |
| 2022-03-16 | 26327109.00 | ND |
| 2022-03-23 | 26327137.00 | ND |
| 2023-09-19 | 29742150.00 | ND |
| 2023-09-27 | 29742300.00 | ND |
| 2023-09-27 | 29742301.00 | ND |
| 2023-09-28 | 29742302.00 | ND |