Chromium (total)
Town of Sharpsburg
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | 2.00 ppb | 1 | 1 | 2.00 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 |
|---|---|---|
| 2018-04-04 | 1804042_01_A | ND |
| 2018-05-21 | E18004206003 | ND |
| 2019-02-06 | 2002038_01 | ND |
| 2019-03-04 | 1804042_01_A2 | ND |
| 2020-02-06 | 0210017_020620_TP01 | ND |
| 2020-06-04 | E20003757003 | ND |
| 2021-01-08 | 2101042_01_A | ND |
| 2021-05-25 | E21003466002 | ND |
| 2022-05-16 | 2205081_01 | ND |
| 2022-09-27 | E2300068402 | ND |
| 2023-05-10 | 2305060-01 | 2.00 ppb |