Cadmium in Drinking Water
Inorganic Chemical · MCL: 5 ppb · 0 systems exceeding limit
Overview
Cadmium is regulated under the Safe Drinking Water Act with an MCL of 5 ppb. The EPA Safe Drinking Water program sets and enforces the maximum contaminant levels shown here.
Health Effects
Exposure to Cadmium above the MCL of 5 ppb may cause adverse health effects. Consult EPA fact sheets for detailed information.
Sources of Contamination
Cadmium can enter drinking water from natural deposits, industrial discharges, or other sources.
Treatment & Removal
Treatment methods for Cadmium include activated carbon filtration, reverse osmosis, and specialized media.
How to Remove Cadmium From Water
These filtration methods are effective for reducing Cadmium in drinking water:
| Filter Method | Effectiveness | Cost Range | Certification |
|---|---|---|---|
| Reverse Osmosis (RO) | High (varies) | $200-500 (under-sink) | NSF/ANSI 58 |
| Activated Carbon Block | Moderate (varies) | $30-100 (pitcher/faucet) | NSF/ANSI 53 |
Reverse Osmosis (RO) — details
Reverse osmosis is effective against most dissolved contaminants. Check specific certifications for this contaminant.
Activated Carbon Block — details
Effectiveness varies by contaminant. Look for filters specifically certified for this substance.
Water Systems with Cadmium Detected
Aqua Pa Main System
Bryn Mawr, Pennsylvania
Tucson City Of
Tucson, Arizona
Gilbert, Town Of
Gilbert, Arizona
Provo City
Provo, Utah
Aquarion-Eastern Fairfield County
Shelton, Connecticut
Glen Burnie-Broadneck
Millersville, Maryland