Which of the following actions is part of water well maintenance?

Cleaning and re-screening existing wells is an essential action in water well maintenance because it directly ensures the well's operational efficiency and water quality. Over time, wells can accumulate sediment, minerals, and biological contaminants that can affect both the flow of water and the safety of the water supply. Regular cleaning helps to remove these obstructions and ensures that the well can deliver clean water at the required capacity.

Re-screening refers to the process of replacing or repairing the well screen, which prevents sediment and other particles from entering the water supply while allowing water to flow through. If the screen is clogged or damaged, it can lead to decreased water quality and quantity. By maintaining and updating these components, the integrity of the water supply is safeguarded, and the lifespan of the well can be prolonged.

Other options, though they may contribute to overall water management or improve household water quality, do not directly fall under the typical actions classified as water well maintenance. Building new wells expands capacity but does not directly maintain existing wells. Installing filtration systems on the household level addresses water quality but is separate from the maintenance of the well itself. Conducting community education programs is important for awareness and usage but does not involve hands-on maintenance or treatment of the wells.