Know Your Environment. Protect Your Health.

Chromium (total)

City of Krum

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
20192.43 ppb441.40 ppb - 5.40 ppb
20200.850 ppb21ND - 1.70 ppb
2021ND20ND
2022ND40ND
20230.950 ppb21ND - 1.90 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
2019-01-09Q19015970091.40 ppb
2019-01-09Q19015970101.50 ppb
2019-01-09Q19015970111.40 ppb
2019-08-20Q19571550045.40 ppb
2022-02-08Q2204313002ND
2022-02-08Q2204313003ND
2022-10-19Q2231852010ND
2022-10-19Q2231852011ND