Borehole Drilling
Sunninghill

Sunninghill lies toward the northern part of the granite dome. Expect a weathered, sandy cover that is cased off, and then harder crystalline rock where groundwater is carried in joints and fractures.

Sunninghill grew quickly as a suburb of security complexes and estates, with Netcare Sunninghill Hospital and offices nearby. Some older freestanding stands remain, but most homes sit within managed developments with shared gardens.

What Is Under Sunninghill

Formation	Where it sits	What it means for drilling
Johannesburg Dome granite and gneiss	The basement rock under the whole suburb, part of the Kaapvaal Craton	Hard, slow drilling once fresh rock is reached. It holds water only in joints, fractures and quartz veins, so the hole has to intersect them to produce.
Weathered granite mantle	Between the topsoil and fresh rock, thickest on the gentler ground	Soft, collapsing material that is always cased through. The transition at its base is often where the first water is struck.
Diabase dykes and quartz veins	Narrow intrusions cutting the granite, often aligned with valleys and spruits	The fractured margins of a dyke are a favoured drilling target. A survey looks for exactly these linear features.

What That Means for Your Borehole

• Neighbouring results are a guide, not a forecast because yield depends on the fractures each hole meets.
• The weathered mantle must be cased and sealed or it collapses and lets shallow water into the hole.
• A storage tank usually does more than a bigger pump given the moderate yields typical of granite ground.

Where We Work Around Sunninghill

• Sunninghill Hospital precinct
• Paulshof
• Sectional-title complexes and estates
• Woodmead border
• Rivonia border
• Leeuwkop farmland to the north
• Older freestanding Sunninghill stands

What to Watch For Here

Estate rules often cover drilling, noise and contractors. Sunninghill estates usually have architectural and conduct rules that set contractor hours, vehicle access and approvals. Some require the homeowners association to sign off the borehole and pump house position before work starts, so obtain those rules early and build the approval period into the timeline for the project.

Healthcare and commercial sites need sound water management. Clinics, consulting rooms and offices near the hospital may want standby water, but this often counts as more than household use. Laboratory testing, suitable treatment and possibly national registration come before any use beyond gardens, and a clinic should involve its own facilities staff early.

What the Water Is Used For

• Watering estate common areas, verges and entrance gardens
• Irrigating small private gardens within Sunninghill complexes
• Standby supply for consulting rooms and nearby offices
• Keeping communal pools topped up through dry spells
• Washing paving, bin yards and complex parking areas

Wellpoint or Borehole?

Not usually. The clayey weathered granite here is not the clean sand a wellpoint needs, and groundwater generally sits deeper than a surface pump can lift. Drilling is the route to a reliable supply.

Approval and Abstraction

Sunninghill falls under the City of Johannesburg. Both main metros require approval before drilling. The City of Johannesburg requires an application to its Environment and Infrastructure Services Department, and an approved application comes with a drilling certificate that has to be kept on site while the rig works; drilling without one risks a fine and impoundment of equipment. The City of Ekurhuleni requires authorisation, with applications reviewed by its Dolomite Section and by Water Demand Management. Elsewhere, including Mogale City, confirm the municipality's current requirements. Separately, the National Water Act governs how much you may abstract: reasonable domestic use generally falls under Schedule 1, and in 2026 the Department of Water and Sanitation confirmed that households using borehole water for reasonable domestic purposes do not need to register nationally. Commercial, agricultural and larger abstraction may need registration or a water use authorisation. Rules change, so confirm the current position before drilling.

Related Services

For the drilling process itself, the geology across the wider area and how a quote is put together, see Borehole Drilling Johannesburg.

Nearby Areas

Borehole Prices in This Area

Drilling is charged per metre, so depth drives the total. The ranges below are framed for local ground conditions and access.

Item	Indicative range	What moves it locally
Drilling, per metre	R450 - R1,100 /m	Decomposed granite drills quickly; fresh granite is slow and wears bits. The split between the two on your stand sets where the cost lands.
uPVC casing, installed, per metre	R400 - R700 /m	The depth of decomposed granite decides how much casing is needed, and it changes across short distances.
Mobilisation and site establishment	R2,500 - R9,000	Access and site conditions move this; a site visit settles it before quoting.
Water survey	R5,000 - R12,000	Targets structure rather than depth. Worth most where yield is fracture-dependent.
Yield testing	R3,500 - R15,000	Establishes the sustainable rate that pump selection depends on.
Pump, supplied and installed	R15,000 - R45,000	Greater depth means more head, which means a larger pump and heavier cable.
Storage and booster	R12,000 - R35,000	Needed wherever peak demand exceeds the borehole's sustainable rate.
Typical complete project	R60,000 - R180,000+	Everything above, excluding treatment, which depends entirely on the water analysis.

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