Borehole vs Wellpoint: Which Suits Your Property

If you’re looking at water independence for your Johannesburg property, two options come up quickly: a borehole and a wellpoint. They sound similar and both pull groundwater — but they work differently, cost differently, and suit different situations. Here’s what you need to know before committing to either.

What Is a Wellpoint?

A wellpoint is a shallow installation, typically no more than 8–15 metres deep, that draws water from an unconfined, near-surface water table. The pipe is usually narrow — often 50 mm or less — and a suction pump pulls water up rather than pushing it from below. Installation is relatively quick and inexpensive compared to a full borehole.

The trade-off is reliability. Because the unconfined water table sits close to the surface, it responds directly to rainfall and seasonal variation. In a dry Highveld winter, that water table drops. In a drought year, it can drop significantly. Yield from a wellpoint is also generally lower and less consistent than a borehole. For light, supplementary garden irrigation in a property with naturally high groundwater, a wellpoint can do the job well. For anything more, you’ll likely find it limiting.

What Is a Borehole?

A borehole is drilled deeper — commonly 40–120 metres in the Johannesburg area, depending on local geology — into a confined or semi-confined aquifer. A submersible pump sits in the water column underground and pushes water to the surface. The deeper target formation is more insulated from short-term rainfall variation, which generally means more consistent yield across seasons.

Because of the depth, borehole drilling requires professional equipment and a registered driller. The full process — drilling, casing, pump installation, pressure tank, and pipework — is a meaningful investment. As a rough guide, complete borehole systems in Johannesburg typically run R60,000–R100,000, with the broader range spanning R40,000–R150,000 depending on depth, geology, and the scope of the installation. Pump installation alone typically costs R15,000–R35,000. Always confirm exact figures via site-specific quotes. You can read more about the full scope of a borehole installation on our borehole drilling guide.

Key Differences at a Glance

Factor	Wellpoint	Borehole
Typical depth	8–15 m	40–120 m (varies by site)
Water source	Unconfined water table	Confined/semi-confined aquifer
Yield consistency	Seasonal variation, lower yield	More consistent, higher yield
Pump type	Surface suction pump	Submersible pump
Typical cost	Lower (confirm via quotes)	R40,000–R150,000, most R60,000–R100,000
Suited to	Supplementary garden irrigation	Irrigation, household use, backup supply
Geology dependence	High	High — but deeper formations often more predictable

Neither option is universally better. Both depend on what’s actually underground at your specific address.

Water Quality Considerations

Groundwater quality differs between shallow and deep sources, and between suburbs. Shallow unconfined aquifers are more exposed to surface contamination — think garden chemicals, septic systems, and stormwater infiltration. Deeper confined aquifers tend to have more natural filtration, but can carry elevated mineral loads such as iron or manganese depending on the rock formation.

Whichever system you choose, have the water tested before use. SANS 241 (2024 edition) is the South African drinking-water quality standard — any lab report you receive should reference it. If you plan to use groundwater for drinking or food preparation, factor in the cost of appropriate filtration or treatment as part of your total budget. For irrigation-only use, quality thresholds are generally less stringent, though you should still check salinity and pH to avoid damaging plants or soil structure.

If your intent is purely to irrigate, it’s worth reading our article on setting up a borehole for irrigation only before deciding on system size and pump capacity.

Not sure which option your property's geology suits best? Compare 3 free quotes — vetted installers, no obligation.

What Johannesburg’s Water Situation Means for Your Decision

Johannesburg Water reported non-revenue water of 44.8% in their 2024/25 audited figures — meaning nearly half the treated water entering the distribution system is lost before it reaches a tap. The city’s reservoir system holds roughly 27 hours of citywide storage buffer, which explains why supply disruptions can escalate quickly once an incident occurs.

For Johannesburg homeowners, this context matters. A wellpoint may give you garden independence during low-pressure periods, but if you’re after genuine supply security for household use, a deeper borehole with meaningful storage is a more robust answer. Neither system eliminates all risk — borehole yields can decline, equipment can fail — but a properly installed borehole with a holding tank gives you a buffer that a shallow wellpoint generally can’t match.

Which One Makes Sense for Your Property?

Start with your use case. If you want supplementary irrigation on a property where you know the shallow water table is consistently high, a wellpoint might be a cost-effective starting point. If you want household backup supply, year-round irrigation reliability, or you’re on a larger stand, a borehole is likely the more appropriate solution.

Then consider your site. Johannesburg’s geology varies considerably across suburbs. Areas on the Witwatersrand ridge tend to have harder rock and may require deeper drilling. Lower-lying areas with more sedimentary or dolomitic geology behave differently again. No article can tell you what’s under your specific property — a hydrogeological assessment or, at minimum, local drilling experience is needed.

The Department of Water and Sanitation registers water use licences and maintains records on aquifer data nationally; consulting their resources or a registered hydrogeologist gives you a clearer picture before you spend anything.

Ready to find out what's realistic on your stand? Get quotes from local drilling specialists — free, no obligation, installers vetted by WaterQuotes.

Before You Commit

Get at least two or three quotes from registered drillers who have worked in your suburb — local experience with the geology is worth more than a low headline price. Ask each contractor to explain what they expect to find at your site, what they’ll do if yield is insufficient, and what guarantees apply. A driller willing to discuss failure scenarios honestly is usually more trustworthy than one who guarantees success.

Also check whether a licence or registration is required for your intended use. The Department of Water and Sanitation sets thresholds above which groundwater abstraction requires a formal water use authorisation. Most domestic boreholes fall below these thresholds, but it’s worth confirming, particularly for higher-yield irrigation setups.