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Optimization of Radiochemical Reactions using Droplet Arrays
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Published on: February 12, 2021

Clay pots for reducing fluoride concentration in drinking water.

Amrita Bansal1, Richa Nagar1, Ashwini Kurli1

  • 1Department of Public Health Dentistry, Government College of Dentistry, Indore, Madhya Pradesh, India.

The Indian Journal of Medical Research
|July 3, 2026
PubMed
Summary

Clay pots significantly reduced fluoride in drinking water by an average of 64%, offering a safe, affordable household solution for communities affected by fluoride contamination and fluorosis.

Keywords:
Clay potDefluoridationFluorosis preventionHousehold treatmentIndia

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Area of Science:

  • Environmental Science
  • Public Health
  • Materials Science

Background:

  • Fluoride contamination in drinking water is a critical public health issue in India, causing dental and skeletal fluorosis.
  • There is a pressing need for accessible and affordable household-level interventions to mitigate fluoride exposure.
  • This study investigates a traditional, low-cost method for water purification.

Purpose of the Study:

  • To evaluate the efficacy of locally available clay pots in reducing fluoride concentrations in drinking water.
  • To assess the feasibility of using clay pots as a household intervention in resource-limited settings.
  • To provide data supporting the use of natural materials for water quality improvement.

Main Methods:

  • Ten drinking water samples from diverse sources in Indore, India, were analyzed for baseline fluoride levels.
  • Fluoride analysis was performed using the SPADNS spectrophotometric method.
  • Water samples were stored in clay pots for 24 hours at room temperature, followed by post-storage fluoride concentration measurements.

Main Results:

  • A statistically significant reduction in mean fluoride concentration was observed, decreasing from 0.72±0.10 mg/L to 0.26±0.06 mg/L.
  • The average reduction in fluoride concentration achieved by clay pot storage was 64% (P=0.01).
  • The results demonstrate a substantial decrease in fluoride levels within a short storage period.

Conclusions:

  • Clay pots present a simple, cost-effective, and culturally appropriate method for reducing fluoride levels in drinking water.
  • This intervention holds significant potential for improving water quality and public health in communities facing fluoride contamination.
  • The study supports the use of traditional materials as sustainable solutions for water treatment challenges.