A community water well, or borehole, is typically built in stages: the community and local partners agree on the need and the site; a hydrogeological survey locates groundwater; a drilling rig bores the well; the hole is lined with casing and screens and sealed at the top; the well is developed and pump-tested; the water is tested for quality; a pump and concrete apron are installed; and a local water committee is trained to maintain it.
The short version
- Listen and partner. The community asks for, owns, and helps plan the project.
- Find the water. A hydrogeological survey locates a promising site.
- Drill. A rig bores down until it reaches a reliable water-bearing layer.
- Line and seal. Casing, screens, gravel pack, and a sanitary seal protect the well.
- Test. The well is developed, pump-tested for yield, and the water is tested for quality.
- Install. A hand pump or solar pump, apron, and drainage are installed.
- Sustain. A trained water committee and a maintenance plan keep it flowing.
This guide describes how community boreholes are generally built. Each confirmed Water Well Project will publish the actual partners and methods used.
1. Listening and local partnership
Lasting projects start with relationship. Community leaders, local government, and trusted partners confirm the need, discuss where a water point would serve people best, and agree on who will own and care for it. This is also when a water committee is often formed — local people responsible for the well’s upkeep, fees or savings for repairs, and fair access.
2. Finding groundwater: the siting survey
Groundwater is not everywhere at the same depth or quality. A hydrogeologist studies local geology and existing wells and often uses geophysical methods — such as measuring how electrical current moves through the ground — to choose a promising drilling point. Sites are also chosen with care to stay a safe distance from latrines and other contamination sources. Local rules may require permits before drilling begins.
3. Drilling the borehole
A drilling rig bores a narrow hole down through soil and rock until it reaches a water-bearing layer called an aquifer. Depth depends entirely on the geology — from a few dozen metres to well over a hundred. Drillers log the layers they pass through, which helps decide where to place screens.
4. Casing, screens, and a sanitary seal
The borehole is lined with casing (usually PVC or steel) to stop it collapsing. Slotted screens are placed at the water-bearing depth so water can enter while sand stays out, and a gravel pack fills the space around them as a natural filter. Near the surface, the gap around the casing is sealed with grout so surface water cannot run straight down into the well.
5. Development, pump testing, and water quality
The new well is “developed” — pumped or flushed until the water runs clear. A pump test measures how much water the well can reliably supply and how quickly it recovers. Samples are then tested for microbial safety and for chemicals relevant to the area before the water is used for drinking.
6. Installing the pump and apron
Many rural community wells use a durable hand pump, while others use a solar-powered pump feeding a storage tank and taps. A concrete apron and drainage channel around the well keep the area clean and stop spilled water pooling. Many projects add a fence to keep animals away.
7. The part that matters most: keeping it flowing
A well that breaks and is never repaired helps no one. Studies across sub-Saharan Africa have repeatedly found that a significant share of rural hand pumps are out of service at any given time, which is why sustainability matters as much as drilling. Good projects plan for spare parts, trained local mechanics, a repair fund, and follow-up visits — and they report honestly on how wells are performing years later.
That is why Water Well Project’s intended approach runs Identify → Partner → Drill → Celebrate → Multiply, and why it will only publish project details once they are verified.
Questions people ask
What is the difference between a well and a borehole?
A borehole is a narrow, deep well drilled by machine and lined with casing. Hand-dug wells are wider and shallower. Most modern community water wells are drilled boreholes.
How deep is a community water well?
It depends on local geology. Boreholes can range from a few dozen metres to well over a hundred metres deep, and a hydrogeological survey is used to choose the site and estimate depth.
Why do some water wells stop working?
Common reasons include broken pump parts, lack of a repair fund or trained mechanic, poor construction, or a drop in groundwater. Community ownership, maintenance planning, and follow-up are what keep wells working.
How much does a water well cost?
Costs vary widely by country, depth, geology, access, pump type, and what is included. Water Well Project does not publish a fixed cost per well; verified funding goals will be published for each confirmed project.