Acute fluoride poisoning in a New Mexico elementary school

Area of Science:

• Environmental Health
• Toxicology

Background:

• Acute fluoride poisoning can occur from contaminated drinking water.
• Proper water treatment is crucial for public health safety.

Purpose of the Study:

• To investigate an acute fluoride poisoning incident at an elementary school.
• To identify the cause and assess the health effects of toxic fluoride levels in drinking water.

Main Methods:

• Analysis of water samples for fluoride concentration.
• Clinical assessment of individuals affected by the contaminated water.
• Investigation of the water treatment system malfunction.

Main Results:

• Thirty-four individuals experienced acute fluoride poisoning.
• Elevated fluoride levels (375 ppm and 93.5 ppm) were detected in the school's water supply.
• A malfunctioning relay switch caused the excessive fluoride concentration.

Conclusions:

• The incident was caused by a mechanical failure in the water fluoridation system.
• Most patients experienced mild, short-term symptoms, with rapid recovery.
• The unpalatable taste of the water limited consumption and prevented severe poisoning.