Summary
Highlights
The Importance of Groundwater Recharge00:00:00
Due to increased concrete surfaces and reduced green areas, rainwater in Bali is increasingly wasted as runoff instead of seeping into the ground, leading to declining groundwater levels. Recharge wells serve as a simple solution to mimic nature, helping to store water and mitigate flooding.
Planning and Site Selection00:01:47
Recharge wells can be customized in shape and depth (shallow, medium, or deep) based on land availability. Ideal locations are determined by testing soil layers for high permeability and ensuring the well remains above the groundwater level. Experts categorize Bali into zones to determine where recharge wells are most effective.
Model 1: The Dug Well00:04:17
This model uses a 1-meter diameter shaft. The top 3 meters are lined with concrete to prevent collapse, while the bottom meter acts as the absorption zone filled with large stones. A gravel and fiber filter surrounds the well to treat surface runoff before it enters the system.
Model 2: The Drilled Well00:06:15
Drilled wells are designed for higher absorption capacity. Depending on the depth (shallow 4m, medium 12m, or deep 50m), the number and diameter of pipes are adjusted. These systems require careful spacing, filtration with fiber and gravel, and sedimentation basins to prevent clogging.
Maintenance and Sustainability00:10:03
Regular maintenance is crucial to prevent sedimentation and ensure efficiency. By filtering out debris and periodically cleaning the system, homeowners can contribute to groundwater preservation, reducing seawater intrusion and protecting against future water scarcity.