Chromium (total)
Schuylkill County. Municipal 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 | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-09-10 | 8026913-01 | ND |
| 2018-09-10 | 8026914-01 | ND |
| 2018-09-10 | 8026916-01 | ND |
| 2018-09-10 | 8026917-01 | ND |
| 2019-09-09 | 9031892-02 | ND |
| 2019-09-09 | 9031892-03 | ND |
| 2019-09-09 | 9031892-01 | ND |
| 2020-09-29 | 23059549.00 | ND |
| 2020-09-29 | 23059573.00 | ND |
| 2020-09-29 | 23059561.00 | ND |
| 2021-09-29 | 25281301.00 | ND |
| 2021-09-29 | 25281313.00 | ND |
| 2021-09-29 | 25281325.00 | ND |
| 2021-09-29 | 25281337.00 | ND |
| 2022-09-28 | 27509754.00 | ND |
| 2022-09-28 | 27509753.00 | ND |
| 2022-09-28 | 27509755.00 | ND |
| 2023-09-27 | 29763335.00 | ND |
| 2023-09-27 | 29763348.00 | ND |
| 2023-09-27 | 29763322.00 | ND |