Sedgefield sits on sandy coastal ground between a lagoon and the sea, which makes water easy to reach and salinity the first thing to measure.
The town has real experience of municipal supply pressure, so a good many boreholes here exist for resilience rather than for the garden.
What Is Under Sedgefield
| Formation | Where it sits | What it means for drilling |
|---|---|---|
| Quaternary coastal sand | The dune cordon and the flatter ground behind it | Unconsolidated and permeable with a relatively shallow water table. Boreholes need screening and a gravel pack; a wellpoint is often possible. |
| Calcrete and cemented horizons | Within and beneath the sand sequence | Hard cemented bands inside otherwise loose ground. They slow drilling, complicate the casing decision and are not predictable in advance. |
| Bokkeveld Group shale | The basement beneath the cover across the coastal platform | Generally modest yields with salinity often elevated. Productive holes are those that intersect fracturing. |
Send your street and what the water is for, and get an itemised quote for Sedgefield.
Get a Sedgefield Borehole QuoteWhat That Means for Your Borehole
- Cover depth decides the project. Establish it before pricing anything else.
- Measure salinity - it comes from both the coast and the shale beneath.
- Calcrete bands slow drilling and change the casing requirement without warning.
Where We Work Around Sedgefield
- Sedgefield village and Myoli Beach
- Cola Beach and the dune properties
- Island Lake and the lagoon margins
- Smutsville and Sizamile
- Karatara and Barrington approaches
- Holiday and retirement properties
- Smallholdings on the surrounding flats
What to Watch For Here
Salinity is the defining local question. With a lagoon on one side and the sea on the other, raised chloride and sodium are a realistic possibility, and over-abstraction makes it worse across the area rather than on one property alone.
Many systems here are about supply resilience, which means sizing storage for a genuine outage and thinking about whether water can be drawn when the power is off.
What the Water Is Used For
- Standby and backup supply for water security
- Garden and lawn irrigation on village stands
- Holiday and retirement property landscaping
- Smallholding irrigation on the flats
- Pool top-up, subject to salinity testing
- Cisterns and washing machines, on plumbing kept separate from the mains
Wellpoint or Borehole?
Often the sensible option here. Sand of useful depth with a shallow table suits a driven point, and for a garden it usually suffices at a fraction of borehole cost. Where calcrete is shallow or demand runs past irrigation, drill instead.
Registration and Abstraction
This area falls under Knysna Municipality rather than the City of Cape Town, so local registration requirements and by-law conditions are that municipality's. This catches people out when they read Cape Town borehole guidance and assume it applies. The district also falls in the Breede-Gouritz water management area rather than the Cape Town one, which affects how abstraction is administered.
Abstraction itself is governed by the National Water Act. Reasonable domestic use generally falls under Schedule 1, but irrigation and commercial volumes usually require registration or a water use authorisation from the Department of Water and Sanitation. Confirm both before drilling.
Related Services
For the drilling process itself, the geology across the wider metro and how a quote is put together, see Borehole Drilling Cape Town.
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 - R1,000 /m | Coastal sand and calcrete drill faster than the mountain rock inland, though calcrete bands slow things and complicate casing. |
| uPVC casing, installed, per metre | R400 - R700 /m | Diameter and class. Weathered-zone thickness is not known until drilling starts. |
| Mobilisation and site establishment | R2,500 - R9,000 | Distance from base and site access both move this; the site visit settles it. |
| 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. |
| Wellpoint alternative | R7,000 - R11,000 | Where sand depth and a shallow water table allow it, this covers garden irrigation for a fraction of the cost. |
| Typical complete project | R60,000 - R170,000+ | 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.
Sedgefield Borehole FAQs
Is Sedgefield groundwater salty?
It can be, and it deserves measuring first rather than assuming. The village sits between a lagoon and the sea, so raised chloride, sodium and conductivity are realistic.
Heavy abstraction worsens it across the area over time, which is a reason for everyone to stay within a tested sustainable rate.
Is a wellpoint enough in Sedgefield?
Often, for garden irrigation, since the sandy ground and shallow water table suit a driven point and it costs a fraction of a borehole.
Where calcrete sits close to surface, or where the purpose is supply resilience rather than watering, a properly sealed borehole is the better answer.
Can a borehole cover a municipal outage?
It can, and that is why many Sedgefield systems exist. The design differs from an irrigation system: storage sized for a genuine outage rather than a watering peak.
Consider power too, since a booster pump will not run during an outage unless it has an alternative supply.
What is calcrete and why does it matter?
Cemented hard bands within the coastal sand sequence. They are not predictable in advance and they slow drilling, change the casing decision and can turn an expected shallow hole into a longer job.
It is a reason to quote per metre here rather than as a fixed sum.
DRILLING IN SEDGEFIELD?
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