Our drinking water is a huge topic of conversation these days, especially with the debate happening in Flint, Michigan.

The fluoridation in our drinking water is abundant in every state. Some people oppose the fluoridation, stating we don't have the choice, some people don't mind the substance . The fluoridation in water started in the 1940's and some think it is the best top heath achievement in the 20th century. The CDC states children have 2.2 less cavities since fluoridation.

Yet still there are those who debate, this is a form of mass medication and the consumer has no choice in the issue.

Andreas Rentz / Getty Images

HeathGrove listed the states with the most fluoridation in their drinking water.

North Dakota ranks in the top 10 at #6 in the country. 96.7% of the community water supply in our state is fluoridated. That equates to about 612,560 people drinking fluoridated water in the state.

The only states with more fluoridation in their drinking water is

  1. District of Columbia
  2. Kentucky
  3. Minnesota
  4. Illinois
  5. Maryland

You can see the complete list for every state.