Chromium (total)
Woodbury
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 | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 8 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-05-23 | 18E1991-01 | ND |
| 2018-05-23 | 18E1991-02 | ND |
| 2018-08-09 | 18H0772-01 | ND |
| 2019-11-14 | 19K0582-02 | ND |
| 2019-11-14 | 19K0582-03 | ND |
| 2020-08-25 | 20H1964-03 | ND |
| 2020-08-25 | 20H1971-01 | ND |
| 2020-08-25 | 20H1971-02 | ND |
| 2020-08-25 | 20H1971-03 | ND |
| 2020-08-25 | 20H1978-01 | ND |
| 2020-11-12 | 20K0577-01 | ND |
| 2020-11-12 | 20K0578-02 | ND |
| 2020-12-03 | 20L0163-01 | ND |
| 2021-03-09 | 21C0455-01 | ND |
| 2022-05-19 | 22E1661-02 | ND |