Iran war throttles global fluoride supply, impacting US waterworks

Source: The Hill

04/25/26 5:00 PM ET


Fluoride is becoming harder to source as the war in Iran places more strain on global supply chains, leading some local governments to reduce their own use of the widely used cavity-fighting agent. Two major water supply systems in Maryland, which serve the Baltimore and suburban D.C. areas, announced this month they would be temporarily reducing the concentration of fluoride, citing the conflict in the Middle East as the cause of a wider national shortage. A Pennsylvania town halted fluoridation for at least a few weeks, also citing the war.

According to chemical suppliers and trade groups, the shortage was brought on by a confluence of supply chain disruptions as well as higher transportation costs resulting from the conflict in the Middle East.

“Some of the suppliers around the nation have either taken their supply offline or severely shortened it, or it’s gone into other streams, like not to municipal streams. And there’s only a few fluoride manufacturers in the nation,” said Emily Horne, a spokesperson for Pencco, which has supplied the Baltimore-area waterworks.

Lowering the concentration from the federally recommended 0.7 mg/L to 0.4 mg/L, the city’s Department of Public Works said this decision was brought on by “broader national supply chain disruptions, driven in part by ongoing conflict in the Middle East.” The war in Iran and the associated standoff in the Strait of Hormuz have impacted U.S. fluoride levels, as Israel is one of the major global suppliers of the chemical used in water systems, fluorosilicic acid.

Read more: https://thehill.com/policy/healthcare/5846574-fluoride-supply-chain-iran-war/