Cathcart sits below the Windvogelberg on Beaufort Group rock with dolerite, in wool and stock country between Komani and Stutterheim.
Classic Karoo-margin drilling: the rock gives little, the dolerite gives what there is.
What Is Under Cathcart
The formations below are what a rig actually meets on a Cathcart property, and between them they govern the depth, the casing requirement and what the hole will realistically give you.
| Formation | Where it sits | What it means for drilling |
|---|---|---|
| Balfour Formation arenaceous mudstone | Most of the Border region, from East London inland | The dominant rock. Intergranular flow in the sandier beds, but modest on its own. |
| Middleton Formation shaly sandstone | Exposed in the lower Buffalo River section | Similar to the Balfour, with fracture flow where structure is present. |
| Jurassic dolerite dykes and sills | Covering roughly a quarter of the surface geology across the district | The productive unit, and unusually extensive here. The baked contact zone beside an intrusion is where the good yields are. |
Send your street and what the water is for, and get an itemised quote for Cathcart.
Get a Cathcart Borehole QuoteWhat That Means for Your Borehole
- Measured yields across this district vary by a factor of twenty, from about 0.4 litres per second in the poorest zones to around 9 litres per second averaged across the best. Which of those you get is a siting outcome, not luck.
- The better ground is inland, not at the coast. Groundwater potential across the Buffalo catchment is highest in the north west toward Stutterheim and lowest in the south and south east, which is the East London coastal side.
- Lineament density peaks around dolerite margins, with a dominant west-north-west trend across the region. That is what a survey maps before drilling.
Where We Work Around Cathcart
- Cathcart town and Thomas River side
- The Windvogelberg slopes
- Komani and Stutterheim approaches
- Wool, stock and mixed farms
- Guest and hunting properties
- Smallholdings around the town
What to Watch For Here
Footslope positions below the Windvogelberg benefit from better recharge than the open country around the town.
Farm distances here make mobilisation a real line item, and coordinating with neighbours who also want holes drilled is worth the organising effort.
What the Water Is Used For
- Crop, vineyard and orchard irrigation
- Stock watering across camps
- Packhouse, cellar and equipment washdown
- Frost protection and establishment watering
- Household and worker housing supply
Wellpoint or Borehole?
Only on the coastal strip and on the Nahoon and Buffalo river alluvium. Inland of the dune cordon it is not an option: Quaternary sediment accounts for about a third of one per cent of the Buffalo catchment's surface geology, so there is simply nothing to drive a point into.
Water Quality in Cathcart
Expect the regional Karoo pattern: variable salinity, routine hardness, and a fluoride risk where dolerite is close. Coastal sites face saline intrusion and are vulnerable to surface pollution because sand recharge is rapid. A full analysis is the sensible baseline rather than an assumption drawn from a neighbour's result.
A water analysis is what turns that from a general expectation into a number for your specific hole, and treatment should be specified against the result rather than against the area's reputation.
Registration and Abstraction
Groundwater itself is regulated nationally rather than municipally, and we could not find a published borehole by-law for this district municipality. As the water services authority it can still require approval before a property draws on an alternative supply, so we confirm the local position before drilling rather than assuming it. Separately, the National Water Act governs how much you may abstract. Reasonable domestic use and small-scale garden watering generally fall under Schedule 1 and need no licence or registration, but taking more than 10 cubic metres a day from groundwater on a property must be registered, and irrigation or commercial volumes usually require registration or a water use authorisation from the Department of Water and Sanitation.
Related Services
For the drilling process itself, the geology across the rest of the country and how a quote is put together, see Borehole Installers South Africa.
Borehole Prices in Cathcart
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 - R1,150 /m | Mudstone drills reasonably, dolerite slowly. Depth to the target contact drives the total more than the rate does. |
| uPVC casing, installed, per metre | R400 - R750 /m | Through the weathered mudstone, and through dune sand and aeolianite on coastal sites. |
| Mobilisation and site establishment | R2,500 - R12,000 | Access, distance 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 | R75,000 - 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 - different 2026 guides quote per-metre drilling rates for the same province that differ by a factor of three - 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.
Cathcart Borehole FAQs
What can a Cathcart farm expect from a borehole?
Enough for stock and household use from a well-sited hole. Irrigation volumes are unlikely from groundwater alone on this ground.
Storage is what makes a modest yield practical across a farm, and it is usually a better investment than a larger pump.
Is a water survey worth it on a farm this size?
On this ground, more than almost anywhere. The host rock is close to barren and the dolerite contacts are narrow targets.
On a large property you also have the space to compare several positions, which is exactly where a survey earns its fee.
What yield can I expect around Cathcart?
It ranges widely. Measured across this district, the best zones average around 9 litres per second and the poorest around 0.4, with most holes somewhere between.
The range is a siting outcome. Groundwater potential is highest inland toward the north west of the catchment and lowest on the coastal side.
Is Cathcart borehole water suitable for drinking?
It needs testing rather than assuming. The regional pattern is variable salinity, hardness, and fluoride where dolerite is nearby.
On a coastal site, add saline intrusion and surface-derived contamination to the list, because sandy ground recharges quickly and carries whatever is at surface with it.
NEED A BOREHOLE IN CATHCART?
Send your street and what you need the water for, and get an itemised quote.
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