Know Your Environment. Protect Your Health.

Chromium (total)

City Of Waterford

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019N/A00N/A
2020ND30ND
2021ND10ND
2022N/A00N/A
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
2018-07-18CA5010006_004_004-201807181140ND
2020-04-15CA5010006_001_001-202004151130ND
2020-04-15CA5010006_005_005-202004151225ND
2020-04-15CA5010006_006_006-202004151035ND
2021-07-20CA5010006_004_004-202107201140ND
2023-05-17CA5010006_006_006-202305171020ND
2023-05-17CA5010006_005_005-202305170950ND
2023-05-17CA5010006_002_002-202305171210ND
2023-05-17CA5010006_001_001-202305171010ND