Throughout history one of the main environmental health problems is that the world is still unsafe. The overpopulation of people in cities made sanitary problems acute. The greatest cities of Europe were filled with huge piles of waste, and contaminated sources of water. The spread of diseases would get even worse when the rain would wash into the local the watershed, the waste dumped onto the streets. Toilets were not as common and were built near a body of water, which then polluted the waterways. If the river was not available the filth, as described by Norberg, was held in cesspits or thrown out the window onto the street. Rising wealth made it possible for modern water and sewer systems to be built, as well as a systematic garbage collection programs to be implemented. These costly ventures are responsible for the increase in life expectancy and reduction in mortality. Sanitation issues are not as prevalent as they used to be, yet some countries have problems with giving people access to safe water, even if water is common.
Living in the twentieth-century water is not something that people really worry about. Humanity is narrow-minded that we take things for