Know Your Environment. Protect Your Health.

Chromium (total)

Arbor Hills 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.

 

11

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
2019ND10ND
20200.733 ppb32ND - 1.10 ppb
2021ND20ND
20220.300 ppb41ND - 1.20 ppb
2023ND10ND

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
2019-09-19CE13376 INPND
2020-05-14AW08958-INP1.10 ppb
2020-05-14AW08956-INP1.10 ppb
2020-10-06AW19319-INPND
2021-05-18AX09492-INPND
2021-05-18AX09490-INPND
2022-04-08AY05849-INP1.20 ppb
2022-04-08AY05847-INPND
2022-05-184202239301-INPND
2022-10-11AY18277-INPND
2023-12-19AZ22865-PRIND