Chromium (total)
Shippensburg Boro Water 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 | 4 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-04-03 | (104) GUNTER | ND |
| 2018-06-13 | (105) SOUTHS | ND |
| 2018-06-13 | (106) MAINSV | ND |
| 2018-08-08 | (107) | ND |
| 2019-04-10 | (104) GUNTER | ND |
| 2020-04-15 | 22158961.00 | ND |
| 2021-04-20 | 24380482.00 | ND |
| 2021-05-19 | 24579242.00 | ND |
| 2021-06-15 | 24774728.00 | ND |
| 2021-07-20 | 24966079.00 | ND |
| 2022-04-13 | 26594465.00 | ND |
| 2023-03-14 | 28650100.00 | ND |