Chromium (total)
Broadmoor Utilities Inc.
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 | 3.00 ppb | 1 | 1 | 3.00 ppb |
| 2019 | 2.90 ppb | 1 | 1 | 2.90 ppb |
| 2020 | 2.63 ppb | 3 | 3 | 1.10 ppb - 4.30 ppb |
| 2021 | 3.13 ppb | 4 | 4 | 2.50 ppb - 4.00 ppb |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | 3.10 ppb | 1 | 1 | 3.10 ppb |
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 |
|---|---|---|
| 2018-09-10 | 180911-005IN | 3.00 ppb |
| 2019-10-14 | 191015-031IN | 2.90 ppb |
| 2020-03-02 | 200303-007IN | 4.30 ppb |
| 2020-08-24 | IN-200826-006 | 2.50 ppb |
| 2020-11-30 | IN-201201-008 | 1.10 ppb |
| 2021-02-22 | IN-210223-006 | 4.00 ppb |
| 2021-06-14 | IN-210615-004 | 3.00 ppb |
| 2021-09-13 | IN-210914-007 | 2.50 ppb |
| 2021-10-25 | IN-211026-021 | 3.00 ppb |
| 2023-10-30 | IN-231031-005 | 3.10 ppb |