Artificial water recharging satisfies insufficient water supply.
A New York State town developed a water treatment plant which uses dissolved air flotation and ozone disinfection to ensure meeting anticipated tighter regulations.
Water Treatment and Disinfection
No matter what design solutions engineers and construction contractors devise to contend with the growing number of water and air pollution regulations, they can't do very much without pumps. Gravity sometimes may play a role in water and wastewater systems, but pumps are without a doubt the prime movers in the business of fluid handling.
A review of the role of plastic pumps in water pollution control systems