Chromium (total)
Cal Am Water Company - Ambler Park
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 | 4 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 7 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-01-09 | CA2710006_009_009-201801091115 | ND |
| 2018-04-04 | CA2710006_009_009-201804041510 | ND |
| 2018-07-18 | CA2710006_009_009-201807181033 | ND |
| 2018-10-22 | CA2710006_009_009-201810220900 | ND |
| 2019-01-03 | CA2710006_009_009-201901031030 | ND |
| 2019-04-15 | CA2710006_006_006-201904151305 | ND |
| 2019-04-16 | CA2710006_009_009-201904161300 | ND |
| 2019-07-01 | CA2710006_009_009-201907011140 | ND |
| 2019-09-24 | CA2710006_004_004-201909241450 | ND |
| 2019-10-16 | CA2710006_009_009-201910161702 | ND |
| 2020-01-08 | CA2710006_009_009-202001081400 | ND |
| 2020-04-14 | CA2710006_009_009-202004141100 | ND |
| 2020-07-07 | CA2710006_009_009-202007071445 | ND |
| 2020-10-06 | CA2710006_009_009-202010061517 | ND |
| 2021-01-11 | CA2710006_009_009-202101111140 | ND |
| 2021-04-15 | CA2710006_009_009-202104151423 | ND |
| 2021-07-29 | CA2710006_009_009-202107291333 | ND |
| 2021-10-12 | CA2710006_009_009-202110120907 | ND |
| 2022-01-26 | CA2710006_009_009-202201261430 | ND |
| 2022-04-20 | CA2710006_004_004-202204201335 | ND |
| 2022-04-20 | CA2710006_006_006-202204201405 | ND |
| 2022-04-21 | CA2710006_009_009-202204210945 | ND |
| 2022-04-21 | CA2710006_009_009-202204210945 | ND |
| 2022-07-20 | CA2710006_009_009-202207201035 | ND |
| 2022-10-13 | CA2710006_009_009-202210131330 | ND |
| 2023-01-19 | CA2710006_009_009-202301191145 | ND |
| 2023-04-13 | CA2710006_009_009-202304131256 | ND |
| 2023-07-17 | CA2710006_009_009-202307171350 | ND |
| 2023-10-12 | CA2710006_009_009-202310121450 | ND |