Know Your Environment. Protect Your Health.

Chromium (total)

Haciendas Del Norte Water Improvement Di

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
20180.0833 ppb121ND - 1.000 ppb
20192.25 ppb106ND - 6.00 ppb
20202.47 ppb1513ND - 5.40 ppb
20210.842 ppb125ND - 4.20 ppb
20224.01 ppb991.80 ppb - 7.60 ppb
20231.94 ppb106ND - 6.10 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