Louisiana Act 731, signed into law on June 2, 2026, lets local communities hold a public vote to remove fluoride from their drinking water. For families, it means the quiet cavity protection that fluoridated water has provided for decades could disappear in some parishes if enough voters petition for and approve a change. Dentists warn that children, who benefit the most from fluoride, would carry the greatest risk if that happens.
Key facts at a glance
- Act 731 (Senate Bill 4) passed the Louisiana House 55 to 38 and the Senate 26 to 7, then was signed into law on June 2, 2026. Source: Louisiana Legislature, 2026.
- About 40 percent of Louisiana residents live in communities with fluoridated water systems. Source: Louisiana Dental Association, reported by the Louisiana Illuminator, 2026.
- Removing fluoride from all United States public water systems could cause 25.4 million more decayed teeth and about 9.8 billion dollars in added dental costs over five years. Source: Choi and Simon, JAMA Health Forum, 2025.
For a directory built around Abbeville and Louisiana dental care, this is one of the most consequential oral health stories of the year. Below is a plain answer to what changed, why it matters for children, and what parents can do right now.
What does Louisiana Act 731 actually change?
Act 731 gives local governments the power to hold a public vote on whether to exempt their water system from Louisiana's fluoridation rules, rather than banning fluoride across the state. The law grew out of Senate Bill 4, sponsored by Senator Mike Fesi, a Republican from Houma, and moved through the 2026 Regular Session before Governor Jeff Landry signed it on June 2, 2026. During the debate, Senator Gerald Boudreaux, a Democrat from Lafayette, amended the measure so that no statewide ban is possible and any change must start with a local petition.
The practical effect is that fluoride is now a community decision. Nothing changes automatically at your tap. A parish or municipality would first need residents to gather signatures from 15 percent of voters, according to the Louisiana Illuminator (2026), and then a local election would decide the outcome. That places the responsibility, and the risk, on individual communities.
| Provision | Detail |
|---|---|
| Sponsor | Senator Mike Fesi, Republican of Houma |
| Bill and act | Senate Bill 4, enacted as Act 731 |
| Signed | June 2, 2026 |
| What it does | Lets a local government hold a public vote to exempt its water system from fluoridation |
| Petition threshold | Signatures from 15 percent of voters to trigger an election |
| Statewide ban | Not permitted; every decision is local |
Why do dentists worry about removing fluoride?
Dentists worry because fluoride in water is one of the cheapest and most even ways to prevent tooth decay, and taking it out tends to hurt the children who can least afford dental care. The Louisiana Dental Association and state health groups opposed Senate Bill 4, noting that fluoridated communities show better long term dental health. Their concern is echoed by national modeling.
A study published in JAMA Health Forum in 2025 by researchers at the Harvard School of Dental Medicine and Brigham and Women's Hospital projected that removing fluoride from every United States public water system would lead to 25.4 million additional decayed teeth and roughly 9.8 billion dollars in added dental costs over five years, with the burden falling hardest on children. Over a ten year horizon, the projected cost rose to about 19.4 billion dollars.
"Fluoride replaces weaker ions within tooth enamel, making it stronger and less susceptible to tooth decay."
Supporters of the law see it differently. Senator Fesi has described fluoride in blunt terms and questioned the dental profession's motives, saying, "Whatever the reason the dental association doesn't want to treat cavities is unknown to me," as quoted by the Louisiana Illuminator (2026). Researchers widely dispute his claims that fluoride at recommended levels harms children.
Who is most affected if a community removes fluoride?
Children, especially those from lower income families, stand to lose the most if a community votes fluoride out. Water fluoridation reaches every home on a system regardless of whether a family can visit a dentist, so it acts as a safety net for kids who might otherwise go without preventive care. When that protection is removed, tooth decay tends to rise first among children who already face the steepest barriers to treatment.
The stakes are not just about teeth. Untreated decay causes pain that keeps children home from school and out of class, and it can push families toward emergency rooms that are not set up for dental care. That is why pediatric and family dentists frame fluoride as a public health measure rather than a personal preference.
How can Abbeville and Louisiana families protect their children now?
Families can protect their children by keeping up twice yearly dental visits and by asking their dentist about extra fluoride protection if their community is weighing a change. A dentist can apply in office fluoride varnish, recommend prescription strength fluoride toothpaste, and place dental sealants on the back teeth where most cavities start. These steps matter even more in a home served by a system that has voted to stop fluoridation.
Parents in the area can start with a local practice such as Abbeville Family Dental, which offers general and family services close to home. It is also worth planning routine care around the school calendar, as we covered in our guide to back to school dental checkups in 2026, so that any cavities are caught and treated early. Staying informed about your own parish's water decisions is the final piece, because under Act 731 the choice now sits with local voters.
Frequently asked questions
Did Louisiana ban fluoride in drinking water?
No. Louisiana did not ban fluoride statewide. Act 731 lets individual communities hold a public vote to remove fluoride from their own water system, and it specifically bars a statewide ban.
Is my tap water still fluoridated right now?
If your community fluoridates its water, that continues unless local voters petition for and approve a change under Act 731. Keep in mind that only about 40 percent of Louisiana residents live on fluoridated systems to begin with, according to the Louisiana Dental Association in 2026.
If my community removes fluoride, how can I protect my child's teeth?
Ask your dentist about fluoride varnish, prescription strength fluoride toothpaste, and dental sealants, and keep regular checkups every six months. Brushing twice a day with fluoride toothpaste and limiting sugary drinks also help lower the risk of decay.
Does fluoride in water really prevent cavities?
Yes. Decades of research support community water fluoridation as a safe way to reduce tooth decay, and a 2025 JAMA Health Forum study projected millions of additional decayed teeth in children if fluoride were removed from United States public water systems.
Updated July 2026. This article summarizes public reporting and published research and is not a substitute for advice from your dentist.
