Know Your Environment. Protect Your Health.

Chromium (total)

Applehill Farm Water District

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.600 ppb21ND - 1.20 ppb
20191.15 ppb21ND - 2.30 ppb
2020ND20ND
20210.750 ppb21ND - 1.50 ppb
20220.550 ppb21ND - 1.10 ppb
2023ND20ND

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
2020-06-17AW11405-INPND
2020-12-09AW23542-INPND
2021-05-19AX09625-INPND
2021-10-27AX21685-INP1.50 ppb
2022-06-08AY09683-INP1.10 ppb
2022-10-06AY18083-INPND
2023-05-22AZ09222-INPND
2023-11-15AZ21006-INPND