Chromium (total)
Wild Oaks Water Company
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 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 |
|---|---|---|
| 2018-09-18 | 420-142840-1INP | ND |
| 2019-08-20 | 420-158952-1INP | ND |
| 2020-05-26 | AW09699-INP | ND |
| 2020-05-26 | AW09697-INP | ND |
| 2020-10-20 | AW20296-INP | ND |
| 2020-11-20 | 420-185837-1INP | ND |
| 2021-01-28 | 420-190141-1-INP | ND |
| 2021-05-19 | AX09638-INP | ND |
| 2021-05-19 | AX09636-INP | ND |
| 2021-10-06 | AX20388-INP | ND |
| 2022-06-07 | AY09594-INP | ND |
| 2022-06-07 | AY09596-INP | ND |
| 2022-10-04 | AY17877-INP | ND |
| 2022-11-23 | 22K3457-01-INP | ND |
| 2023-01-19 | 23A1932-04-INP | ND |
| 2023-05-03 | AZ08005-INP | ND |
| 2023-05-03 | AZ08003-INP | ND |
| 2023-11-02 | AZ20329-INP | ND |