Chromium (total)
West Baton Rouge Water Works District 2
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 2 | 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 |
|---|---|---|
| 2019-06-18 | B1902548-001 | ND |
| 2019-06-18 | B1902548-001 | ND |
| 2019-10-08 | B1904494-001 | ND |
| 2019-10-08 | B1904494-001 | ND |
| 2020-01-15 | B2000168-001 | ND |
| 2020-11-10 | B2005996-001 | ND |
| 2021-02-04 | B2100489-001 | ND |
| 2021-05-18 | B2102268-001 | ND |
| 2021-09-20 | B2104674-001 | ND |
| 2022-06-21 | B2202887-001 | ND |
| 2022-10-17 | B2205085-001 | ND |
| 2023-01-10 | B2300124-001 | ND |