Know Your Environment. Protect Your Health.

Chromium (total)

Friona Municipal Water System

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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.10 ppb113.10 ppb
20192.50 ppb332.10 ppb - 3.10 ppb
2020N/A00N/A
20211.90 ppb111.90 ppb
20224.90 ppb222.30 ppb - 7.50 ppb
2023N/A00N/A

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
2018-07-30Q18300460103.10 ppb
2019-01-17Q19027510102.30 ppb
2019-01-17Q19027510113.10 ppb
2019-04-23Q19161760092.10 ppb
2021-04-08Q21090540081.90 ppb
2022-01-11Q22008090012.30 ppb
2022-07-12Q22195200047.50 ppb