III. The Industrial Revolution: A Turning Point for Water Purifiers
The Industrial Revolution in the 18th and 19th centuries had a profound impact on water purification. With the rapid growth of industries and urbanization, water pollution became a major problem. The first modern – day water filters were developed during this time. These filters often used basic materials such as cloth, sand, and charcoal. For example, the sand – filter systems, which were installed in some cities, were designed to remove sediment and larger particles from the water supply.
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The discovery of chlorine’s disinfectant properties in the 19th century was a game – changer. Chlorine was added to water supplies to kill harmful bacteria and prevent water – borne diseases. This simple yet effective method was widely adopted in many parts of the world and significantly improved public health. However, these early water treatment methods still had limitations. They were not always able to remove all types of contaminants, especially dissolved substances and heavy metals.