What cities have fluoride in the water?

The largest cities with fluoridated water systems include:

- New York City

- Los Angeles

- Chicago

- Houston

- Phoenix

- Philadelphia

- San Antonio

- San Diego

- Dallas

- San Jose

Internationally, many countries have implemented water fluoridation, including:

- Australia

- Brazil

- Canada

- Chile

- Colombia

- Czech Republic

- Finland

- Germany

- Great Britain

- Ireland

- Japan

- Malaysia

- Mexico

- New Zealand

- Philippines

- Singapore

- South Africa

- Spain

- Sri Lanka

- Sweden

- Thailand

- Vietnam