Know Your Environment. Protect Your Health.

Chromium (total)

Woodlands At Nuuanu

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.

 

0

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.24 ppb76ND - 2.00 ppb
20191.46 ppb551.000 ppb - 2.00 ppb
20201.68 ppb6159ND - 3.10 ppb
20212.08 ppb881.20 ppb - 3.70 ppb
20221.90 ppb1312ND - 3.40 ppb
20231.50 ppb5545ND - 3.40 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