Chromium (total)
Minden Water System
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 | 26 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 9 | 0 | ND |
| 2022 | ND | 10 | 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 |
|---|---|---|
| 2018-04-06 | 35385008004 | ND |
| 2018-04-06 | 35385008003 | ND |
| 2018-04-06 | 35385008002 | ND |
| 2018-04-06 | 35385008001 | ND |
| 2018-04-06 | 35385008001 | ND |
| 2018-04-06 | 35385008002 | ND |
| 2018-04-06 | 35385008003 | ND |
| 2018-04-06 | 35385008004 | ND |
| 2018-06-25 | 35400742002 | ND |
| 2018-06-25 | 35400742009 | ND |
| 2018-06-25 | 35400742008 | ND |
| 2018-06-25 | 35400742007 | ND |
| 2018-06-25 | 35400742006 | ND |
| 2018-06-25 | 35400742005 | ND |
| 2018-06-25 | 35400742004 | ND |
| 2018-06-25 | 35400742002 | ND |
| 2018-06-25 | 35400742001 | ND |
| 2018-06-25 | 35400742009 | ND |
| 2018-06-25 | 35400742008 | ND |
| 2018-06-25 | 35400742007 | ND |
| 2018-06-25 | 35400742006 | ND |
| 2018-06-25 | 35400742005 | ND |
| 2018-06-25 | 35400742004 | ND |
| 2018-06-25 | 35400742003 | ND |
| 2018-06-25 | 35400742001 | ND |
| 2018-06-25 | 35400742003 | ND |
| 2021-04-13 | B2101674-005 | ND |
| 2021-04-13 | B2101674-009 | ND |
| 2021-04-13 | B2101674-008 | ND |
| 2021-04-13 | B2101674-007 | ND |
| 2021-04-13 | B2101674-006 | ND |
| 2021-04-13 | B2101674-004 | ND |
| 2021-04-13 | B2101674-003 | ND |
| 2021-04-13 | B2101674-002 | ND |
| 2021-04-13 | B2101674-001 | ND |
| 2022-09-14 | B2204449-001 | ND |
| 2022-09-14 | B2204449-002 | ND |
| 2022-09-14 | B2204449-003 | ND |
| 2022-09-14 | B2204449-004 | ND |
| 2022-09-14 | B2204449-005 | ND |
| 2022-09-14 | B2204449-006 | ND |
| 2022-09-14 | B2204449-007 | ND |
| 2022-09-14 | B2204449-008 | ND |
| 2022-09-14 | B2204449-009 | ND |
| 2022-09-14 | B2204449-010 | ND |