Know Your Environment. Protect Your Health.

Chromium (total)

St. Nersess Armenian Seminary

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.

 

14

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
2019N/A00N/A
2020ND40ND
2021ND20ND
20220.400 ppb31ND - 1.20 ppb
2023ND50ND

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
2020-03-17AW05461-INPND
2020-07-15AW13401-INPND
2020-07-15AW13403-INPND
2020-11-044201846175-INPND
2021-03-02AX04088-INPND
2021-07-21AX14494-INPND
2022-01-10AY00554-INP1.20 ppb
2022-09-20AY16884-INPND
2022-09-20AY16882-INPND
2023-01-23AZ01383-INPND
2023-09-14AZ16994-INPND
2023-09-14AZ16996-INPND
2023-09-28AZ17943-INPND
2023-10-041.232482-INPND