Chromium (total)
No Kaweah Mutual Water Company
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 | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-03-22 | CA5400506_006_006-201803221135 | ND |
| 2018-03-22 | CA5400506_004_004-201803221122 | ND |
| 2018-08-16 | CA5400506_005_005-201808161025 | ND |
| 2019-03-07 | CA5400506_006_006-201903071240 | ND |
| 2019-03-07 | CA5400506_004_004-201903071220 | ND |
| 2020-01-24 | CA5400506_005_005-202001241510 | ND |
| 2020-03-17 | CA5400506_004_004-202003171120 | ND |
| 2020-03-17 | CA5400506_006_006-202003171140 | ND |
| 2021-01-13 | CA5400506_005_005-202101131000 | ND |
| 2021-04-22 | CA5400506_004_004-202104220730 | ND |
| 2021-04-22 | CA5400506_006_006-202104220733 | ND |
| 2022-01-26 | CA5400506_005_005-202201260830 | ND |
| 2022-04-07 | CA5400506_004_004-202204070700 | ND |
| 2022-04-07 | CA5400506_006_006-202204070700 | ND |
| 2023-01-11 | CA5400506_005_005-202301111630 | ND |
| 2023-04-26 | CA5400506_006_006-202304261400 | ND |
| 2023-04-26 | CA5400506_004_004-202304261400 | ND |