Know Your Environment. Protect Your Health.

Chromium (total)

United Water Pennsylvania

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
20231.35 ppb21ND - 2.70 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
2018-02-122295329001ND
2018-02-122295329002ND
2019-01-14H9A0679-01ND
2019-01-14H9A0679-02ND
2020-02-1021794017.00ND
2020-02-1021793984.00ND
2021-01-0623839642.00ND
2021-01-0623839675.00ND
2022-02-0926240988.00ND
2022-09-1427589615.00ND
2023-02-0928473461.002.70 ppb
2023-09-0629836419.00ND