I believe the Romans and their aqua ducts.
drainage or sewage water are unsanitary water
Thomas Henry Percy Veal has written: 'The disposal of sewage' -- subject(s): Sewage disposal 'The supply of water' -- subject(s): Water-supply
John snow, he cured it by looking at the sewage and the river Thames and the sewage was found to leak through into the water supply this is how the epademic started.
It filters raw sewerage from entering the domestic potable water supply
Floodwaters allow sewage to mix with drinking water.
It covers companies providing electric power, natural gas, steam supply, water supply and sewage removal
Geo. W. Rafter has written: 'Water resources of the state of New York ...' -- subject(s): Water-supply 'Sewage disposal in the United States' -- subject(s): Sewage disposal, Sewage
Jonathan Parkinson has written: 'Integrated urban water management' -- subject(s): Municipal water supply, Water reuse, Water-supply, Management, Sewage, Watershed management, Urban runoff 'Integrated urban water management' -- subject(s): Municipal water supply, Water reuse, Water-supply, Management, Sewage, Watershed management, Urban runoff 'Integrated urban water management' -- subject(s): Municipal water supply, Water reuse, Water-supply, Management, Sewage, Watershed management, Urban runoff
Sewage is a term for the waste of people and animals. Normally, sewage is sent off to a treatment plant, and kept entirely separate from drinking water. If sewage was to enter the water supply, it would make people extremely sick.
Karl Imhoff has written: 'The arithmetic of sewage treatmemt works' -- subject(s): Sewage disposal 'Der Ruhrverband' -- subject(s): Water-supply
As a civilization, you have to have seven different qualities. One of them is a stable food supply. As we all know, Athens was a civilization, therefore, they had a stable food supply.
stable food supply is having enough food to feed civilization