Fluoride Contamination in Massachusetts

ZipCheckup analyzed drinking water data across 695 ZIP codes in Massachusetts for fluoride contamination. 4 ZIP codes have reported fluoride detections, and 2 have EPA violations on record.

The violation rate for fluoride in Massachusetts is 0.3% of all ZIP codes — lower than the national average.

EPA Standard for Fluoride

The EPA maximum contaminant level (MCL) for fluoride is 4.0 mg/L (MCL) / 2.0 mg/L (SMCL), governed by the National Primary Drinking Water Regulations. Water systems that exceed this limit must take corrective action and notify consumers.

Worst ZIP Codes for Fluoride in Massachusetts

These ZIP codes reported the highest fluoride levels in Massachusetts based on CCR reports and EPA data:

Lowest Fluoride Levels in Massachusetts

These ZIP codes had the lowest reported fluoride detections in Massachusetts:

Health Effects of Fluoride

At levels above the EPA MCL of 4 mg/L, fluoride can cause skeletal fluorosis (bone pain, joint stiffness). The secondary standard of 2 mg/L is set to prevent dental fluorosis in children. At levels used in water fluoridation (0.7 mg/L), fluoride helps prevent tooth decay.

How to Remove Fluoride From Drinking Water

The most effective treatment for fluoride removal is Reverse Osmosis or Activated Alumina. Look for filters certified under NSF 58 standards.

Check Your ZIP Code

Use the ZipCheckup water quality search to see fluoride data for your specific water system in Massachusetts.