Chromium (total)
Meridian Water Department
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 | 24 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 22 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | 0.200 ppb | 13 | 2 | ND - 1.40 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 |
|---|---|---|
| 2018-03-26 | I2018003270669 | ND |
| 2018-03-26 | I2018003270688 | ND |
| 2018-03-26 | I2018003270670 | ND |
| 2018-03-26 | I201803270687 | ND |
| 2018-03-26 | I2018003270671 | ND |
| 2018-03-26 | I2018003270680 | ND |
| 2018-03-26 | I2018003270686 | ND |
| 2018-03-26 | I2018003270668 | ND |
| 2018-03-26 | I2018003270682 | ND |
| 2018-03-26 | I2018003270673 | ND |
| 2018-03-26 | I2018003270666 | ND |
| 2018-03-26 | I2018003270667 | ND |
| 2018-03-26 | I2018003270665 | ND |
| 2018-03-26 | I2018003270685 | ND |
| 2018-03-26 | I2018003270675 | ND |
| 2018-03-26 | I2018003270683 | ND |
| 2018-03-26 | I2018003270684 | ND |
| 2018-03-26 | I2018003270674 | ND |
| 2018-03-26 | I2018003270681 | ND |
| 2018-03-26 | I2018003270672 | ND |
| 2018-03-26 | I2018003270689 | ND |
| 2018-04-10 | I201804120311 | ND |
| 2018-05-07 | R201805100737 | ND |
| 2018-06-12 | I201806131144 | ND |
| 2019-04-09 | 201904100102 | ND |
| 2019-12-10 | 201912110680 | ND |
| 2020-03-10 | 202003110253 | ND |
| 2020-03-10 | 202003110242 | ND |
| 2020-03-17 | 202003180487 | ND |
| 2020-03-17 | 202003180445 | ND |
| 2020-03-17 | 202003180341 | ND |
| 2020-03-18 | 202003190169 | ND |
| 2020-04-07 | 202004080530 | ND |
| 2020-04-07 | 202004080558 | ND |
| 2020-04-14 | 202004150455 | ND |
| 2020-04-14 | 202004160513 | ND |
| 2020-08-05 | 202008060243 | ND |
| 2020-08-06 | 202008070395 | ND |
| 2020-08-06 | 202008070424 | ND |
| 2020-08-06 | 202008070429 | ND |
| 2020-08-13 | 202008140195 | ND |
| 2020-08-24 | 202008260647 | ND |
| 2020-08-26 | 202008280065 | ND |
| 2020-11-23 | 202011240342 | ND |
| 2020-11-23 | 202011240344 | ND |
| 2020-11-24 | 202011250284 | ND |
| 2020-11-24 | 202011250275 | ND |
| 2020-12-02 | 202012030482 | ND |
| 2021-01-20 | 202101210294 | ND |
| 2021-07-21 | 202107220276 | ND |
| 2021-11-16 | 202111170684 | ND |
| 2022-02-22 | 202202231261 | ND |
| 2022-03-01 | 202203020994 | ND |
| 2022-11-16 | 380-28732-1 | ND |
| 2023-08-01 | 380-57235-1 | ND |
| 2023-08-02 | 380-57464-1 | 1.40 ppb |
| 2023-08-07 | 380-57977-1 | ND |
| 2023-08-07 | 380-57974-1 | ND |
| 2023-08-07 | 380-57897-1 | ND |
| 2023-08-07 | 380-57894-1 | ND |
| 2023-08-07 | 380-57899-1 | ND |
| 2023-08-09 | 380-58355-1 | ND |
| 2023-08-09 | 380-58481-1 | 1.20 ppb |
| 2023-08-09 | 380-58496-1 | ND |
| 2023-08-10 | 380-58742-1 | ND |
| 2023-09-26 | 380-64427-1 | ND |
| 2023-09-26 | 380-64488-1 | ND |