Chromium
Heavy MetalDetected in 5,745 of the 20,609 ZIP codes we analyze (28% of areas).
Standards & Effects
MCL (Maximum Contaminant Level)
100 ppb
Health Effects
Allergic dermatitis, respiratory issues, cancer risk (Cr-6)
Common Sources
Industrial discharge, leather tanning, electroplating
Filtration Options
Reverse osmosis, ion exchange
Look for filters certified by NSF International or WQA for removal of Chromium.
See the Filter Guide →Where It's Been Detected
Largest areas with Chromium detections on record
Note: This information is educational. For personalized water testing and treatment recommendations, contact your local water utility or a certified water quality professional.