Chemicals human settlements

Chemicals from human settlements (including those used for public health purposes for example, for vector control)... 

Table 6.1 Chemicals derived from human settlements... 

Part B provides practical guidance on identifying specific chemicals that are likely to be of concern in individual water supply systems. It groups chemical contaminants into five categories on the basis of their potential sources naturally occurring, from agriculture activities, from human settlements, from industrial activities, and from water treatment and distribution processes themselves. 

The soils and sediments that make up the earth s surface were the focus of human activities in the past as they are today. Human settlement is almost always found on sedimentary deposits. Humans dig and build and move these sediments around. They also leave physical and chemical traces of their activities in the ground. The physical traces are the visible remains of pits and posts, earthworks and foundations that remain. The chemical traces are the invisible deposits of elements and molecules left behind by various kinds of activities. Manuring, for example, leaves a... 

What other societies had faced before ns snch as the abandoned pyramids of Mayan cities, Easter Island s lonely Moai statues and abandoned Viking settlements in Greenland, we face the same collapse today. These ancient societies failed becanse of the same problems we are facing today environmental damage, climate variation, support from trade parmers, and a failnre of society to respond to problems such as overconsumption of natnral resonrces and overpopulation. We could add human indnced climate change and environmental damage from chemical pollntion accompanied by a lack in biodiversity. This is a scary perspective. Instead of giving up we should look at solutions to avoid the same mistakes. 

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