Wellpoint Installation
Durban

A wellpoint is a small-diameter pipe driven or jetted into shallow, saturated sand, with a perforated point at the bottom and a suction pump at the surface. It is a much smaller undertaking than a borehole, it costs considerably less, and in the right ground it will water a garden perfectly well.

The catch is in that last phrase. Wellpoints only work where the ground suits them. Around Durban that covers far more properties than in most South African cities, because much of the coast is lined with sand, but it still excludes most of the higher, rocky ground inland. Where the geology is right, a wellpoint is often the sensible choice. Where it is not, no amount of trying will make one work.

How a Wellpoint Works

1. 1A small-diameter pipe with a screened or perforated point at its base is driven, jetted or augered into the ground.
2. 2It penetrates into the saturated sand below the water table - typically only a matter of metres, not the tens of metres a borehole reaches.
3. 3A surface pump connected at the top draws water up by suction.
4. 4Water is delivered to irrigation, a tank or a garden tap.

The defining constraint is that a surface pump lifts by suction, and suction lift is limited by atmospheric pressure to roughly seven or eight metres in practice - often less, allowing for pipe friction and any air leakage. If the water table sits below that, a wellpoint cannot work regardless of how much water is down there. This is why wellpoints are confined to areas with a genuinely shallow water table.

Where Wellpoints Work in Durban

Along much of the coast, often. A wellpoint needs several metres of loose, permeable sand with a water table within roughly seven metres of surface, and Durban's coastal strip has a good deal of that. Sandy stands near the beach at Umdloti, Ballito, Amanzimtoti, Warner Beach, Kingsburgh and Scottburgh, the lower slopes of Umhlanga and La Lucia, the dunes on the Bluff and the sandier parts of the Durban South flats are the typical candidates, and on many of those properties a wellpoint is a routine way of watering a garden.

There are caveats, and they matter. Close to the sea, fresh groundwater in the sand sits above salt water, and pumping hard can draw brackish water in, so a wellpoint near the shore should be pumped gently and its water tested for conductivity and chloride. Iron is common in the coastal sands, and it clogs points and stains paving. Fine dune sand can pass the screen and wear the pump. The red, clayey Berea sands on the ridge crests of the Berea, Morningside and Glenwood hold too much clay and sit too far above the water table to suit a wellpoint, and in the Durban South flats clay lenses and the industrial history of the basin mean the water must be tested before it is used for anything beyond basic irrigation.

Inland, wellpoints are rarely viable. On the Upper Highway at Hillcrest, Gillitts, Waterfall and Botha's Hill, in the Natal Group sandstone and tillite of Westville, Pinetown, New Germany and Kloof, and in the Karoo shale of Queensburgh, Chatsworth and Pietermaritzburg, the rock is either too hard to drive a point into or the water sits far below suction lift. The exception there is river alluvium - strips of sand and gravel beside rivers such as the Umgeni, the Umbilo and the Msunduzi - which is narrow, absent on most properties and exposed to whatever is upstream. Away from those strips, a borehole is the route to groundwater inland, and on the coast it is the step up when a wellpoint cannot deliver enough water, or water of good enough quality.

Points toward a wellpoint	Points toward a borehole
Loose coastal or dune sand, or river alluvium	Sandstone, tillite, shale or granite near surface - the Upper Highway, Westville, Pinetown, Kloof and Pietermaritzburg
Shallow water table, within suction lift	Water table deeper than around seven metres
Garden and lawn irrigation is the main use	Household supply or higher-volume demand
Modest flow requirement	Sustained or high flow required
Lower budget, quicker installation	Long-term supply, higher reliability required
Neighbouring properties have working wellpoints with fresh water	No wellpoints nearby, or neighbours report brackish or iron-laden water

Wellpoint Versus Borehole

	Wellpoint	Borehole
Depth	Shallow - metres	Deep - typically tens of metres
Installation	Driven, jetted or augered; small equipment, quick	Drilling rig; a larger operation
Cost	Substantially lower	Substantially higher
Pump	Surface pump, limited by suction lift	Submersible pump, no suction limit
Typical yield	Modest - suits garden irrigation	Variable, but can be considerably higher
Seasonal reliability	More affected; water table drops in dry months	Less affected, though not immune
Water quality	Shallow water, more exposed to surface contamination	Deeper water, generally better protected if properly sealed
Lifespan and maintenance	Points silt up and clog; may need replacing periodically	Longer-lived where properly constructed and maintained
Suitable for household supply	Generally not - usually garden use only	Possible with testing and treatment
Where it works	Sandy areas with a shallow water table only	Most geology, given adequate access

Realistic Expectations

A wellpoint is a modest, useful piece of infrastructure, and it is worth being clear about what it is not:

• Yields are modest. Adequate for a garden, generally not for household supply or substantial irrigation. If you need more, a borehole drilled through the sand into the rock below is the next step.
• Output varies seasonally. Durban gets most of its rain from October to March, and a shallow water table falls through the drier winter months. Coastal points in good sand are often steadier than inland alluvial ones, but some slow noticeably by late winter.
• Suction lift is a hard ceiling. If the water table drops below the pump's suction capability, output stops regardless of the water present.
• Points clog over time. Fine sand and iron deposits gradually block the screen, and iron is common in Durban's coastal sands. A wellpoint is more of a consumable than a borehole, and eventual replacement or reinstallation should be expected.
• Water quality is more exposed. Shallow groundwater is closer to surface influences - septic systems, soakaways, fertiliser and stormwater, and close to the sea, salt. This is a significant reason wellpoints are generally kept to garden use.
• Sand in the water is common, which wears pump impellers and blocks irrigation emitters.
• Not every attempt succeeds. Even in a suitable area, a point can hit clay or fail to yield adequately.

Getting the Best From a Wellpoint

• Position it clear of septic tanks, soakaways, French drains and stormwater, since shallow water is easily influenced
• Use a pump matched to the suction lift and the modest flow, rather than an oversized unit that will simply draw air
• Prime the pump properly and keep the suction line airtight - air leaks are the most common cause of a wellpoint that will not draw
• Fit a foot valve or non-return so the suction line holds its prime between uses
• Filter the water before irrigation emitters, since sand is common and blocks drippers quickly
• Do not run it hard for long periods if output is falling or the water starts to taste salty; near the sea that is the wellpoint telling you it is drawing more than the sand can supply
• Treat it like a borehole for municipal purposes - in eThekwini, register it with the municipality and keep it physically separate from the municipal supply
• Near the sea, keep the pump and controls sheltered from salt air and use corrosion-resistant fittings, since humidity and salt shorten their life
• Mark outlets clearly as non-potable, since wellpoint water should not be assumed safe to drink

Common Wellpoint Problems

Symptom	Usual cause
Pump runs but draws nothing	Lost prime, an air leak in the suction line, a failed foot valve, or the water table has dropped below suction lift.
Flow reducing over months or years	The point is silting or clogging with fine sand and iron deposits. Sometimes recoverable by flushing; often means reinstallation.
Strong at first, then fades within minutes	Drawing down faster than the sand around the point can replenish. Usually means the pump is too large for what the point supports.
Sand in the water	Common with wellpoints. Filtration protects the pump and irrigation, but heavy sand suggests a screening problem at the point.
Strong in summer, weak by late winter	Seasonal water table decline before the summer rains. The point may be too shallow, or the aquifer is simply at its limit in that area.
Water turning salty or brackish	Near the coast, usually pumping too hard and drawing saline water in. Reduce the rate and running time, and test conductivity and chloride.
Pump losing prime between uses	Failed foot valve or a leak somewhere on the suction side.

What Affects Wellpoint Cost

• Depth required to reach and penetrate the saturated sand
• Ground conditions and whether obstructions such as clay layers or buried rubble are encountered
• Installation method - driven, jetted or augered
• Whether the pump is included, and its specification
• Pipework and connection to irrigation or a tank
• Whether filtration is fitted to handle sand
• Site access to the installation position
• Whether more than one point is installed, which is sometimes done to increase available flow

A wellpoint is a fraction of the cost of a borehole, which is the main reason to consider one. But if your area does not suit it, spending less on something that will not work is not an economy - and a proper assessment of the ground is the first thing to establish.

Related Services

If your ground turns out not to suit a wellpoint - hard rock, or a water table below suction lift - then a borehole is the alternative. Borehole Drilling Durban covers what that involves, how deep it typically goes and what drives the cost.

What a Wellpoint Costs in Durban

This is the reason to consider a wellpoint at all - where the ground genuinely suits one, it waters a garden for a small fraction of a borehole. Published South African installer pricing for these is fairly consistent, so the ranges here are tighter than elsewhere on the site.

Item	Indicative range	What moves it
Standard wellpoint installed with pump	R6,500 – R10,000	Typically includes the point, a self-priming surface pump, non-return valve and outlet. Published rates cluster closely here.
Additional point on the same property	R2,500 – R5,000	Sometimes installed in pairs where a single point yields poorly.
No-water or unsuccessful attempt fee	R2,750 – R3,800	Charged where the attempt fails. Ask about this before work starts - it is standard practice, not a penalty.
Pump upgrade	R2,000 – R7,000	Larger self-priming unit. Remember suction lift caps what any surface pump can do.
Sediment filtration	R800 – R4,000	Sand is common on wellpoints and blocks irrigation emitters quickly.
Reinstallation of a clogged point	R3,500 – R8,000	Points silt up over time. Treat this as a periodic cost rather than a fault.
For comparison: a borehole	R55,000 – R220,000+	See borehole drilling costs. Far higher, but works in most geology, reaches below brackish shallow water and yields much more.

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