Know Your Environment. Protect Your Health.

Chromium (total)

Stringer Water Works

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND20ND
20202.70 ppb441.70 ppb - 3.70 ppb
2021N/A00N/A
20221.35 ppb221.20 ppb - 1.50 ppb
20230.900 ppb220.600 ppb - 1.20 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
2019-03-27190328-025INND
2019-03-27190328-026INND
2020-03-24200325-031IN3.50 ppb
2020-03-24200325-032IN3.70 ppb
2020-04-21200422-023IN1.70 ppb
2020-04-21200422-024IN1.90 ppb
2022-05-17IN-220518-0161.50 ppb
2022-05-17IN-220518-0171.20 ppb
2023-05-16IN-230517-0131.20 ppb
2023-05-16IN-230517-0140.600 ppb