history of drinking water treatment
History of drinking water treatment
In Perzia people searched for underground rivers and lakes. The water went through holes in rocks into the wells on the plains.
Figure 1: bathing residence in Mohenjo-Daro, Pakistan
The Romans were the greatest architects and constuctors of water distribution networks in history. They used river, spring or groundwater for provisioning. The Romans built dams in rivers, causing lakes to form. The lake water was aerated and than supplied. Mountain water was the most popular type of water, because of its quality.
Figure 2: a Roman aquaduct
After the fall of the Roman empire, the aquaducts were no longer used. From 500 to 1500 A.D. there was little development in the water treatment area. In the Middle Ages countless cities were manifested. In these cities wooden plumming was used. The water was extracted from rivers or wells, or from outside the city. Soon, circumstances became highly unhygenic, because waste and excrements were discharged into the water. People that drank this water fell ill and often died. To solve the problem people started drinking water from outside the city, where rivers where unpolluted. This water was carried to the city by so-called water-bearers.
More information on water disinfection?:
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