Chromium (total)
Lovelock Meadows Water District
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 | 5.00 ppb | 1 | 1 | 5.00 ppb |
| 2019 | 4.00 ppb | 2 | 2 | 4.00 ppb |
| 2020 | 4.00 ppb | 1 | 1 | 4.00 ppb |
| 2021 | 3.00 ppb | 1 | 1 | 3.00 ppb |
| 2022 | 5.00 ppb | 1 | 1 | 5.00 ppb |
| 2023 | 6.00 ppb | 1 | 1 | 6.00 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 |
|---|---|---|
| 2018-07-30 | EN2018-00003723 | 5.00 ppb |
| 2019-02-25 | EN2019-00000705 | 4.00 ppb |
| 2019-08-12 | EN2019-00003934 | 4.00 ppb |
| 2020-02-25 | EN2020-00007407 | 4.00 ppb |
| 2021-03-01 | EN2021-00012246 | 3.00 ppb |
| 2022-04-04 | EN2022-00001425 | 5.00 ppb |
| 2023-07-05 | EN2023-00002483 | 6.00 ppb |