Chromium-6 Contamination in Washington

ZipCheckup analyzed EPA enforcement records across 726 ZIP codes in Washington. 2 ZIP codes have chromium-6-related violations on record.

The violation rate for chromium-6 in Washington is 0.3% of all ZIP codes — lower than the national average.

EPA Standard for Chromium-6

The EPA maximum contaminant level (MCL) for chromium-6 is 100 ppb (total chromium MCL), governed by the National Primary Drinking Water Regulations. Water systems that exceed this limit must take corrective action and notify consumers.

Health Effects of Chromium-6

How to Remove Chromium-6 From Drinking Water

The most effective treatment for chromium-6 removal is Reverse Osmosis or Strong-Base Anion Exchange. Look for filters certified under NSF 58 standards.

Check Your ZIP Code

Use the ZipCheckup water quality search to see chromium-6 data for your specific water system in Washington.