Doornpoort sits on Bushveld Complex ground toward the northern edge of the built area, where suburban stands give way to smallholdings.
The mix of suburban and agricultural demand here changes both the sizing and the regulatory position.
What Is Under Doornpoort
| Formation | Where it sits | What it means for drilling |
|---|---|---|
| Bushveld Complex norite and gabbro | The bedrock across the ground north of the Magaliesberg ridge | A dense igneous rock that holds water only in its weathered and jointed upper part. Fresh norite yields almost nothing. |
| The weathered mantle | The zone between soil and fresh rock, from a few metres to tens of metres thick | This is where the water is. How thick it is, rather than how deep the hole goes, determines the outcome. |
| Granophyre ridges and diabase dykes | The low ridges and intrusions cutting the mafic sequence | The value is at the margins rather than in the rock. A survey on this ground is looking for exactly those contacts. |
Send your street and what the water is for, and get an itemised quote for Doornpoort.
Get a Doornpoort Borehole QuoteWhat That Means for Your Borehole
- Depth of weathering is the thing that matters rather than how deep the hole goes in total.
- Iron and manganese are worth testing for because mafic ground more often produces water that stains and needs treatment.
- Results vary over short distances in step with how deeply the rock has weathered.
Where We Work Around Doornpoort
- Doornpoort and its extensions
- Smallholdings toward Roodeplaat
- Montana Park boundary
- Magalieskruin approaches
- Wonderboom side
- Agricultural and equestrian properties
- Estate and complex developments
What to Watch For Here
Smallholding demand is continuous rather than seasonal. Livestock watering, paddock irrigation and market gardening are steady daily requirements rather than peaks. That changes pump selection and makes proper yield testing essential rather than advisable.
Properties beyond the municipal network rely on the borehole entirely. Where there is no reticulated supply the borehole is not a supplement, it is the supply. That raises the importance of water quality testing, treatment where needed, and having a plan for pump failure.
What the Water Is Used For
- Stock watering, paddock irrigation and smallholding use
- Irrigation over the long dry season before the summer rains
- Standby supply when the municipal mains go down
- Lowering a water bill driven mostly by outdoor use
- Shared landscaping in sectional-title schemes
Wellpoint or Borehole?
Ruled out here. Weathered norite produces a heavy clay soil, which is the opposite of what a driven point requires, and the usable water sits within the deeper weathered rock.
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.
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 | The weathered upper section is quick; the fresh rock beneath it is not. Nobody knows where one becomes the other until the rig gets there. |
| uPVC casing, installed, per metre | R400 - R700 /m | Set by diameter and class, with the length following the depth of the weathered mantle, which is inconsistent across this ground. |
| 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.
Doornpoort Borehole FAQs
Can a borehole be the only water supply on a smallholding?
It commonly is, on properties beyond the reticulated network. That raises the stakes on both quality and reliability.
It means treatment matched to a proper analysis, storage sized for a pump failure, and a maintenance routine rather than a fit-and-forget installation.
Do I need to register agricultural water use?
Probably. Reasonable domestic use and a garden fall within Schedule 1 of the National Water Act, but irrigation at agricultural scale and commercial livestock watering generally do not.
That means registration or a water use authorisation from the Department of Water and Sanitation, and it is better settled before drilling than after.
What yields do smallholdings here get?
It depends on weathering depth, and it varies considerably across the area. Moderate is the common outcome.
For continuous agricultural demand the yield test should be longer and more rigorous than a domestic one, because the draw is sustained rather than intermittent.
How should livestock affect the borehole position?
Keep the hole and its headworks well clear of stabling, kraals, manure handling and any soakaway, and make sure surface water drains away from the collar.
Those are the practical routes by which contamination reaches a borehole, and they are far easier to design around than to remediate.
DRILLING IN DOORNPOORT?
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