Chromium (total)
Waysons Mobile Court
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.
8
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 3 | 0 | ND |
| 2021 | 4.30 ppb | 1 | 1 | 4.30 ppb |
| 2022 | ND | 2 | 0 | ND |
| 2023 | 4.10 ppb | 1 | 1 | 4.10 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 |
|---|---|---|
| 2018-12-05 | EC_1812_02 | ND |
| 2020-04-28 | E20003449002 | ND |
| 2020-04-28 | E20003449003 | ND |
| 2020-11-17 | EC_2011-02 | ND |
| 2021-06-17 | EC8271 | 4.30 ppb |
| 2022-02-01 | E2200114402 | ND |
| 2022-02-01 | E2200114403 | ND |
| 2023-06-22 | EC9511 | 4.10 ppb |