Chromium (total)
Eugene Water & Electric Board
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 | 4 | 0 | ND |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 3 | 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 |
|---|---|---|
| 2018-02-06 | 180223101C-I | ND |
| 2018-05-09 | 180543001C-I | ND |
| 2018-08-01 | 180809401B-I | ND |
| 2018-11-07 | 201811080534-I | ND |
| 2019-02-04 | 201902050084-I | ND |
| 2019-05-13 | 201905140039-I | ND |
| 2019-08-05 | 201908060215-I | ND |
| 2019-11-04 | 201911051086-I | ND |
| 2020-02-03 | 202002040124-I | ND |
| 2020-08-03 | 202008040087-I | ND |
| 2020-09-10 | 202009110103-I | ND |
| 2020-09-14 | 202009150221-I | ND |
| 2020-09-21 | 202009220096-I | ND |
| 2020-11-03 | 202011040128-I | ND |
| 2020-11-16 | 202011170113-I | ND |
| 2021-02-02 | 202102030239-I | ND |
| 2021-05-10 | 202105110438-I | ND |
| 2021-08-02 | 202108030522-I | ND |
| 2021-11-01 | 202111020067-I | ND |
| 2022-02-02 | 202202040410-I | ND |
| 2022-08-01 | 22080056-01C-I | ND |
| 2022-11-07 | 22110349-01B-I | ND |
| 2023-02-06 | 23020244-01C-I | ND |
| 2023-05-08 | 23050406-01C-I | ND |
| 2023-08-01 | 380-57291-1-I | ND |
| 2023-11-06 | 380-69947-1-I | ND |