Monument Park sits on the slopes below Skanskop and Klapperkop, on Pretoria Group rock with the Fountains dolomite compartment in the valley beyond.
Depth to that dolomite is the main variable in a quote here, and it is not consistent across the suburb.
What Is Under Monument Park
| Formation | Where it sits | What it means for drilling |
|---|---|---|
| Timeball Hill Formation shale and quartzite | The higher ground and low ridges through the southern suburbs | The shale drills readily; the interbedded quartzite bands are hard. Water is held in fractures and along bedding rather than spread through the rock. |
| Malmani dolomite beneath | The compartments below and to the south that feed the Fountains and Rietvlei springs | The strong aquifer sits underneath. How deep that contact lies beneath a particular stand is the main unknown in any quote here. |
| Karoo outliers and surface deposits | Scattered through old pre-Karoo depressions across the ground south of the city | Tillite, sandstone and clay of variable thickness resting on the older rocks. They change how much casing a hole needs and are not visible from the surface. |
Send your street and what the water is for, and get an itemised quote for Monument Park.
Get a Monument Park Borehole QuoteWhat That Means for Your Borehole
- Depth is genuinely uncertain here because it depends on where the dolomite contact sits under your stand.
- A survey earns its cost on this ground more clearly than on ground where the target depth is well established.
- Two neighbouring stands can need very different depths which is a function of the faulted contact rather than of workmanship.
Where We Work Around Monument Park
- Monument Park and Monument Park Extension
- Slopes below Klapperkop and Skanskop
- Erasmuskloof boundary
- Waterkloof Glen approaches
- Groenkloof side
- Cluster and complex developments
- Larger stands on the upper terraces
What to Watch For Here
Slope and rock cover set the access. The stands rising toward the ridge are terraced, and retaining walls, steep driveways and shallow rock all restrict where a truck-mounted rig can work. Establishing that on site usually matters more to the final position than the geological preference does.
The quartzite bands are the slow part. The Timeball Hill shale under most of the suburb drills readily, but the quartzite bands within it do not, and where a hole passes through one the metre rate effectively changes. That is why quotes here are ranges rather than fixed figures.
What the Water Is Used For
- Irrigation over the long dry season before the summer rains
- Keeping the pool level up, depending on the water analysis
- A fallback for when the reticulated supply fails
- Estate common property and verge irrigation
- Cutting the volume bought from the metro each month
Wellpoint or Borehole?
No. The cover over the rock is thin and clay-rich rather than sandy, and the standing water level is well beyond suction range, so a drilled borehole is the route to take.
Registration and Abstraction
A completed borehole here should be registered with the City of Tshwane, and the responsibility for that sits with the property owner rather than with the driller. Separately, the National Water Act governs how much you may abstract: reasonable domestic use and small-scale gardening generally fall under Schedule 1, while larger, agricultural or commercial abstraction may require registration or a water use authorisation from the Department of Water and Sanitation. The position on domestic registration was being actively revised during 2026, so confirm your obligations before drilling rather than afterwards.
There is an additional step on dolomite. Stability classifications for this land sit with the Council for Geoscience and development on it falls under SANS 1936, so the City may want sight of that before a rig is permitted on the stand. Raise it early; the delay, if there is one, is in the approval rather than in the drilling.
Related Services
For the drilling process itself, the geology across the wider metro and how a quote is put together, see Borehole Drilling Pretoria.
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 | R500 - R1,200 /m | What drives this is how far down the dolomite sits. The shale above it is quick going; the quartzite bands and the dolomite itself are not. |
| uPVC casing, installed, per metre | R400 - R700 /m | Both the weathered shale and any buried Karoo material need casing, and neither shows its depth from the surface. |
| 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 | R70,000 - R200,000+ | Everything above, excluding treatment, which depends entirely on the water analysis. |
These are indicative ranges, not a quotation. They are compiled from published South African supplier and contractor pricing to give you a starting point for budgeting. They are not our rate card, and no figure here is a commitment.
Treat them as a broad guide only. Published borehole pricing in South Africa varies enormously - 2026 guides quote per-metre drilling rates for Gauteng ranging from under R300/m to R1,500/m, a spread of more than five to one - because depth, geology, access, specification, distance and fuel costs all move the number. Depth in particular is not known until the hole is finished. Figures generally exclude VAT unless noted, and change over time. Only an itemised written quote against your actual site means anything.
Monument Park Borehole FAQs
Is Monument Park on dolomite?
The suburb itself sits mainly on Pretoria Group shale and quartzite, with the dolomite compartment that feeds the Fountains springs lying below and to the side.
Whether a particular borehole reaches that dolomite depends on the depth to the contact under your stand, which varies and is worth checking rather than assuming.
Why do quotes here come as a range rather than a price?
Because depth is the largest cost item and it is not known in advance. Drilling is charged per metre, and the metres needed depend on where water is found.
A fixed total price on this ground either builds in a large safety margin or leaves the contractor exposed. An itemised per-metre quote is the more honest structure.
Can a rig get onto a sloped Monument Park stand?
Often, but not always in the position that the geology would prefer. Terracing, retaining walls and narrow driveways all constrain the approach.
It is the kind of thing best settled by a site visit before quoting, because it occasionally changes the project entirely.
Is a survey worth it in Monument Park?
On this ground it is more useful than average, because yield depends on intersecting fractures rather than on reaching a known depth.
It targets structure, not depth, and it improves the odds rather than guaranteeing water. Nobody can honestly promise the latter.
DRILLING IN MONUMENT PARK?
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