Know Your Environment. Protect Your Health.

Chromium (total)

Ephrata Area Joint Authority

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
2018ND30ND
2019ND10ND
2020ND10ND
2021ND40ND
2022ND10ND
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
2018-04-098008753-01ND
2018-04-098008770-01ND
2018-04-098008754-01ND
2019-04-019002714-01ND
2020-10-1423319945.00ND
2021-01-0623670516.00ND
2021-01-2823847283.00ND
2021-05-0724590692.00ND
2021-08-0925175341.00ND
2022-04-1226604765.00ND
2023-04-0428855379.00ND