Know Your Environment. Protect Your Health.

Chromium (total)

State College Boro Water Auth.

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND10ND
2020ND10ND
2021ND90ND
2022ND30ND
2023ND40ND

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
2018-02-148B14175-02ND
2018-02-148B14175-03ND
2018-02-148B14175-04ND
2018-02-148B14175-05ND
2018-02-148B14175-01ND
2019-02-129B12142-01ND
2020-02-1221735717.00ND
2021-02-1623954025.00ND
2021-02-1623954036.00ND
2021-02-1623954047.00ND
2021-02-1623954058.00ND
2021-02-1623954014.00ND
2021-04-0724321987.00ND
2021-08-1625098854.00ND
2021-09-1325291490.00ND
2021-11-1525654956.00ND
2022-02-1526182626.00ND
2022-09-0127520774.00ND
2022-11-1627890883.00ND
2023-02-1428415042.00ND
2023-05-1528981477.00ND
2023-08-1429578250.00ND
2023-11-1330139883.00ND