Chromium (total)
Kings Court Mobile Home Park 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 | 5.85 ppb | 4 | 4 | 5.00 ppb - 6.70 ppb |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | 6.40 ppb | 2 | 2 | 5.40 ppb - 7.40 ppb |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | 6.75 ppb | 2 | 2 | 6.30 ppb - 7.20 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 |
|---|---|---|
| 2018-07-17 | AE22091 | 5.00 ppb |
| 2018-07-17 | AE22091 | 5.00 ppb |
| 2018-08-22 | B1803900-001 | 6.70 ppb |
| 2018-08-22 | B1803900-001 | 6.70 ppb |
| 2020-11-16 | B2006099-001 | 5.40 ppb |
| 2020-11-16 | B2006099-002 | 7.40 ppb |
| 2023-09-25 | B2304064-002 | 6.30 ppb |
| 2023-09-25 | B2304064-003 | 7.20 ppb |