Borehole Drilling Cost Per Metre: How Depth Pricing Works

Understanding what you’ll actually pay for a borehole starts with understanding how drillers structure their pricing — and why the headline rate per metre rarely tells the whole story. This guide breaks down depth-based pricing, the fixed costs that sit alongside it, and the variables specific to Johannesburg that affect where your project lands.

How per-metre pricing actually works

Most borehole contractors in South Africa quote a rate per metre drilled, charged from the surface down to the final depth. That rate compensates the driller for rig time, fuel, wear on drill bits, and the labour involved in pulling the drill string back up once the borehole is complete.

The critical thing to understand is that this rate is charged regardless of whether you strike usable water. Drillers are selling a service — drilling to a target depth — not a guaranteed water supply. If the hydro-survey recommends drilling to 80 metres and you hit a productive aquifer at 60 metres, you typically pay for 60 metres. If the driller reaches 80 metres and water yield is poor, you’ve paid for 80 metres and may need to discuss going deeper or abandoning the hole.

As a rough guide, confirm current per-metre rates directly with contractors when you request quotes, because rates vary by rig type, rock formation, and what’s included.

Why depth varies so much in Johannesburg

Johannesburg sits on the Witwatersrand ridge, a geologically complex area of ancient quartzite, shale, and dolomite formations. Dolomite in particular — common across parts of the West Rand and southern Johannesburg — requires specialist assessment before drilling and can significantly affect both depth and method.

A professional hydro-geological survey should precede any drilling. It won’t guarantee an exact depth, but it reduces the risk of dry holes and helps the driller choose the right location on your property. Skipping this step to save money is a false economy: a dry borehole still costs you the full drilling bill.

Typical productive boreholes in the Johannesburg area vary widely in depth. Some properties strike adequate water at 40–60 metres; others require 100 metres or more depending on the aquifer structure. The Groundwater Division of South Africa (gwd.org.za) publishes guidance on local aquifer characteristics that gives a useful starting point.

What else is on the invoice beyond drilling

The per-metre drilling rate is genuinely just the beginning. A complete borehole installation invoice typically includes several distinct line items:

Cost component	Typical position in the quote
Mobilisation / rig transport	Fixed fee, charged once
Drilling (per metre)	Variable — depends on final depth
PVC or steel casing	Per metre of casing installed
Borehole development (jetting/airlift)	Fixed or per-hour charge
Yield testing	Separate charge
Water quality testing (SANS 241)	Laboratory fee
Pump supply and installation	Separate line item
Electrical connection	Often quoted separately
Storage tank and pressure system	If required

Pump supply and installation alone typically runs R15,000–R35,000 installed. If you need a storage tank and pressure system alongside the borehole — a common setup for whole-house independence — expect that to add further cost, with complete backup tank-and-pump setups typically running R20,000–R40,000 for simpler configurations.

You can find a detailed breakdown of how these components combine in our guide to borehole drilling prices in South Africa, which walks through full-system cost ranges.

Drilling quotes vary more than most homeowners expect — itemised quotes from multiple contractors are the only way to compare fairly. Compare 3 free quotes — vetted installers, no obligation.

Fixed costs that don’t change with depth

Mobilisation fees — the cost of getting the rig to your property and setting up — are fixed regardless of how deep you drill. These can be a meaningful proportion of the total bill on a shallow borehole, which is one reason very shallow boreholes aren’t always cheaper in practice than moderate-depth ones once all costs are included.

Similarly, borehole development (the process of clearing drilling debris and improving yield by jetting or air-lifting the borehole after drilling) and water quality testing are typically fixed charges. Water quality testing to SANS 241 — the South African drinking-water quality standard — is not optional if you intend to use the water for drinking or food preparation. A passing result from a SANS 241 analysis is the baseline confirmation that water is fit for potable use.

Getting quotes that are actually comparable

Because invoices are structured differently across contractors, comparing three quotes on per-metre rate alone is misleading. One contractor may quote a lower per-metre rate but charge more for casing, development, or mobilisation. Another may offer an all-inclusive package that looks expensive until you add up the line items from the cheaper quote.

When you request quotes, ask each contractor to break out:

• The per-metre drilling rate and what rock formations that rate covers
• Whether a harder-rock surcharge applies (relevant in parts of Johannesburg)
• Mobilisation as a separate line
• Casing type and per-metre casing cost
• Development and yield testing
• Whether water quality testing is included or separate
• Pump supply, installation, and electrical work

Our borehole drilling pillar page covers what to look for when evaluating contractors and what the full process involves from survey to commissioning.

If you're ready to get numbers for your specific property and depth conditions, it pays to get several itemised proposals side by side. Request quotes from vetted drillers — free, no obligation.

What Johannesburg’s water situation means for your decision

Johannesburg Water’s 2024/25 audited figures show non-revenue water — water lost through leaks and infrastructure failures before it reaches consumers — running at 44.8%. The city’s reservoir system holds roughly 27 hours of citywide storage buffer. These figures matter for homeowners weighing the case for a borehole: municipal supply pressure and reliability are genuine variables, not hypothetical ones.

A borehole doesn’t replace municipal water in most cases, but it does provide meaningful resilience for irrigation, toilet flushing, and — with appropriate treatment and a SANS 241-tested supply — potentially more. Whether that resilience justifies the R60,000–R100,000 that most complete systems cost in Johannesburg depends on your usage, your property’s aquifer access, and how much supply interruption costs you in practical terms.

The per-metre drilling rate is where the conversation starts. The full installed cost, your site’s geology, and the quality of the contractor you choose are where it ends.