Chromium (total)
Angelica Village Public Water
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 | 2 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | 2.80 ppb | 1 | 1 | 2.80 ppb |
| 2022 | 0.600 ppb | 2 | 1 | ND - 1.20 ppb |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-01-23 | EHS1800003815IOC | ND |
| 2019-06-05 | EHS1900029887-SR-2 | ND |
| 2019-06-05 | EHS1900029887-SR-2 | ND |
| 2020-07-13 | 2010566-001 | ND |
| 2021-09-23 | 2116229-001B | 2.80 ppb |
| 2022-05-17 | 2207014-001B | 1.20 ppb |
| 2022-07-12 | EHS2200032672-01I | ND |
| 2023-05-16 | EHS2300027426-01A | ND |