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Updated on March 13, 2023
2 min read

Water Fluoride Statistics in Massachusetts

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Fluoride is a naturally occurring mineral that can help strengthen teeth and prevent dental health problems. Water fluoridation is the process of adding fluoride to public drinking water supplies to reduce tooth decay. 

Grand Rapids, Michigan became the first U.S. city to fluoridate its public water supply in 1945. Many other cities have since followed suit.

After using dental products with fluoride, fluoridated water reduces tooth decay by another 25% among children and adults.1 It's recommended to have 0.7 mg of fluoride per liter of drinking water.7

Massachusetts Fluoride Statistics Overview

Here are some key statistics about water fluoridation in Massachusetts:2,3

  • Massachusetts's most recent percentage of the population with access to fluoridated water in 2018 was 57.3%
  • The percentage of Massachusetts' population with access to fluoridated water has been steadily decreasing since 2008, dropping from 65.4% to 57.3% in 2018.
  • Massachusetts ranks #38 (out of 50) in the U.S., with the population having access to Fluoridated water
  • Massachusetts's rank for access to fluoridated water has generally been decreasing from 2012 to 2018.
  • 3,593,419 people in Massachusetts were served by CWS in 2018


Percentage of Massachusetts Population with Access to Fluoridated Water Over Time (higher is better)

This graph shows the percentage of the population in Massachusetts with access to fluoridated water from 2008 to 2018. It shows a slight decrease in access to fluoridated water over the 10 year period.

Massachusetts's Flouridated Water Access Rank in the United States Over Time (lower is better)

Massachusetts's ranking has generally been around the same over the past few years, with a slight decrease in 2018.

Why access to Fluoride water matters

Water fluoridation is a cost-effective and efficient way to help reduce cavities. Drinking water with fluoride makes teeth more resistant to acid attacks from plaque, bacteria, and sugars in the mouth. Good fluoride levels in water might even reverse early signs of tooth decay.

According to the CDC:4

  • For children younger than age 8, fluoride helps strengthen the adult (permanent) teeth that are developing under the gums
  • For adults, drinking water with fluoride supports tooth enamel, keeping teeth strong and healthy

Water fluoridation is especially important for low-income families, who often don't have access to routine dental care. It helps ensure preventive dental care is available.

Growth Of Flouride Water overtime

In 2018, 207,426,536 people in the U.S. received fluoridated water. This is a 60.1% increase from 1951.6

The past years have shown steady growth in the number of people with access to fluoridated water. Based on this information, we can infer the trend will continue. 

The Office of Disease Prevention and Health Promotion is targeting that 77.1% of the population should have access to fluoridated water. According to their website's latest information, they're about to reach this target.8

Other Sources of Fluoride

Aside from water, fluoride can be found in other sources, including: 

  • Most toothpaste 
  • Most mouthwash
  • Food and drinks processed with fluoridated water
  • Dietary prescription supplements with fluoride
Last updated on March 13, 2023
9 Sources Cited
Last updated on March 13, 2023
All NewMouth content is medically reviewed and fact-checked by a licensed dentist or orthodontist to ensure the information is factual, current, and relevant.

We have strict sourcing guidelines and only cite from current scientific research, such as scholarly articles, dentistry textbooks, government agencies, and medical journals. This also includes information provided by the American Dental Association (ADA), the American Association of Orthodontics (AAO), and the American Academy of Pediatrics (AAP).
  1. "Over 75 Years of Community Water Fluoridation." Centers for Disease Control and Prevention.
  2. "2018 Fluoridation Statistics." Centers for Disease Control and Prevention.
  3. "2008 Fluoridation Statistics." Centers for Disease Control and Prevention.
  4. "Water Fluoridation Basics." Centers for Disease Control and Prevention.
  5. "Fluoride in water." American Dental Association.
  6. "Fluoridation Growth." Centers for Disease Control and Prevention.
  7. "All About Fluoride." American Dental Association.
  8. "Increase the proportion of people whose water systems have the recommended amount of fluoride - OH-11." Office of Disease Prevention and Health Promotion.
  9. "About Fluoride." Centers for Disease Control and Prevention.
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