Water quality in storage reservoirs is maintained through a combination of design features, regular monitoring, and active management practices. One of the primary methods is disinfection, usually with chlorine or a similar agent, which prevents microbial growth and keeps the water safe for consumption during storage. Operators regularly check disinfectant levels and adjust dosing as needed to maintain effectiveness without affecting taste.
Reservoirs are also designed to reduce contamination risks. Protective linings prevent seepage and chemical leaching, while covers or controlled access keep out debris, animals, and pollutants. In uncovered reservoirs, managers may use shade structures or floating covers to limit sunlight, which helps control algae growth.



