Chromium (total)
Veiola Water Idaho
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 | 0.533 ppb | 15 | 2 | ND - 5.00 ppb |
| 2019 | 0.200 ppb | 15 | 1 | ND - 3.00 ppb |
| 2020 | ND | 13 | 0 | ND |
| 2021 | 0.438 ppb | 16 | 3 | ND - 3.00 ppb |
| 2022 | 0.154 ppb | 13 | 1 | ND - 2.00 ppb |
| 2023 | ND | 6 | 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 |
|---|---|---|
| 2018-02-05 | I1804986 | ND |
| 2018-02-06 | I1805280 | ND |
| 2018-02-12 | I1806151 | ND |
| 2018-05-15 | I1821863 | ND |
| 2018-05-15 | I1821851 | ND |
| 2018-06-06 | I1825583 | ND |
| 2018-06-06 | I1825581 | ND |
| 2018-06-21 | I1828604 | ND |
| 2018-06-21 | I1828603 | ND |
| 2018-06-21 | I1828606 | ND |
| 2018-06-21 | I1828608 | ND |
| 2018-06-26 | I1829342 | ND |
| 2018-06-26 | I1829341 | ND |
| 2018-06-26 | I1829345 | 3.00 ppb |
| 2018-07-02 | I1830578 | 5.00 ppb |
| 2019-02-19 | I1907386 | ND |
| 2019-02-19 | I1907388 | ND |
| 2019-03-06 | I1909868 | ND |
| 2019-03-06 | I1909865 | ND |
| 2019-04-17 | I1917321 | ND |
| 2019-06-12 | I1927972 | ND |
| 2019-06-20 | I1929654 | ND |
| 2019-07-03 | I1932118 | ND |
| 2019-07-10 | I1933346 | 3.00 ppb |
| 2019-07-10 | I1933345 | ND |
| 2019-07-19 | I1935267 | ND |
| 2019-07-19 | I1935266 | ND |
| 2019-08-28 | I1942932 | ND |
| 2019-08-28 | I1942930 | ND |
| 2019-09-05 | I1944523 | ND |
| 2020-01-29 | I2004286 | ND |
| 2020-05-12 | I2021377 | ND |
| 2020-05-27 | I2024179 | ND |
| 2020-06-24 | I2029685 | ND |
| 2020-06-24 | I2029690 | ND |
| 2020-06-24 | I2029684 | ND |
| 2020-06-25 | I2029970 | ND |
| 2020-06-25 | I2029961 | ND |
| 2020-06-25 | I2029967 | ND |
| 2020-06-25 | I2029950 | ND |
| 2020-07-06 | I2031370 | ND |
| 2020-07-21 | I203447 | ND |
| 2020-07-29 | I2036178 | ND |
| 2021-02-10 | I2106445 | ND |
| 2021-02-10 | I2106442 | ND |
| 2021-02-22 | I2108110 | ND |
| 2021-02-23 | I2108307 | ND |
| 2021-02-25 | I2108881 | ND |
| 2021-02-25 | I2108882 | ND |
| 2021-03-10 | I2111204 | ND |
| 2021-03-10 | I2111201 | ND |
| 2021-03-31 | I2114461 | 2.00 ppb |
| 2021-03-31 | I2114464 | ND |
| 2021-04-14 | I2116875 | ND |
| 2021-04-14 | I2116880 | 2.00 ppb |
| 2021-06-02 | I2126624 | ND |
| 2021-06-14 | I2129194 | ND |
| 2021-06-16 | I2129746 | 3.00 ppb |
| 2021-07-07 | I2133971 | ND |
| 2022-02-08 | I2206351 | ND |
| 2022-02-28 | I2209478 | ND |
| 2022-05-04 | I2221318 | ND |
| 2022-06-08 | I2227283 | ND |
| 2022-06-28 | I2230856 | ND |
| 2022-06-28 | I2230843 | ND |
| 2022-07-12 | I2233126 | ND |
| 2022-07-12 | I2233125 | ND |
| 2022-07-12 | I2233124 | ND |
| 2022-07-12 | I2233123 | ND |
| 2022-07-19 | I2234591 | ND |
| 2022-07-26 | I2235901 | ND |
| 2022-07-26 | I2235903 | 2.00 ppb |
| 2023-03-08 | I2304392-05 | ND |
| 2023-04-26 | I2307945-08 | ND |
| 2023-04-26 | I2307945-09 | ND |
| 2023-06-07 | I2311322-01 | ND |
| 2023-06-14 | I2311829-01 | ND |
| 2023-07-26 | I2315525-01 | ND |