Selling a House with a Borehole: What to Disclose

Selling a home in Johannesburg means navigating disclosure rules that most estate agents handle every day — but a borehole adds a layer most sellers are not fully prepared for. Get the paperwork right and a borehole can genuinely strengthen your listing. Miss something, and it can become a post-transfer headache.

Why disclosure matters legally

South African property law operates largely on the voetstoots principle — you sell as-is — but this protection evaporates the moment you knew about a defect and stayed quiet. A borehole is not a defect in itself, but an unregistered borehole, a faulty pump, or contaminated water that you were aware of and did not disclose can all be treated as latent defects you concealed. The buyer’s remedy, even after transfer, is a damages claim against you personally.

The Offer to Purchase (OTP) in South Africa typically includes a standard disclosure schedule. Fill it in honestly and completely. If your OTP does not have a borehole section, add a written addendum. Never rely on verbal assurances to a buyer — they are unenforceable after registration.

What the Department of Water and Sanitation expects

Under the National Water Act, any borehole used for purposes beyond purely domestic household use must be registered with the Department of Water and Sanitation (DWS). Even for strictly domestic use, registration is strongly recommended — and in practice, buyers and their conveyancers increasingly require it as a condition of sale.

If your borehole is not yet registered, read through the registration process explained for Johannesburg homeowners before you list the property. Trying to register in a hurry during an active sale is stressful and can delay transfer. The DWS portal at www.dws.gov.za is the authoritative source for current requirements — regulations do change, so check directly rather than relying on secondhand summaries.

The documents a buyer’s conveyancer will ask for

Expect a buyer’s attorney or a diligent buyer to ask for most or all of the following:

Document	Why it matters
DWS registration certificate or reference number	Confirms legal status under the National Water Act
Borehole driller’s completion report	Records depth, yield (litres per hour), and casing details
Recent water-quality test results	Assesses fitness for intended use against SANS 241 (2024 edition)
Pump specification and installation invoice	Gives the buyer realistic maintenance expectations
Details of any treatment system (UV, filtration, etc.)	Shows what the water quality currently depends on
Municipal by-law compliance confirmation	Johannesburg Water requires notification of private water sources used on the property

If you do not have the driller’s report — common with older boreholes — commission a professional borehole assessment before listing. It protects you and makes the property far easier to sell.

Water quality: test before you transfer

This is non-negotiable from a disclosure standpoint. South Africa’s drinking-water standard is SANS 241 (2024 edition), published by the South African Bureau of Standards. A test result tells both you and the buyer what the water currently contains and whether it meets that benchmark for the intended use.

Do not assume the water is safe because it looks clear or because you have drunk it for years without obvious ill effect. Borehole water can carry dissolved minerals, bacteria, or agricultural run-off that are not detectable by taste or appearance. The professional rule here is simple: test first, treat second. If results show treatment is needed, disclose both the results and the treatment system in place. Buyers who understand what they are getting are far less likely to come back to you later.

A single accredited laboratory test typically costs a fraction of what a post-sale dispute would. Confirm current pricing with a SANAS-accredited laboratory directly — costs vary and are worth confirming via a fresh quote.

If you're also planning to upgrade or certify the borehole system before listing, comparing installer costs first saves negotiation later. Get 3 free borehole quotes — vetted installers, no obligation.

How a borehole affects your asking price

A working, registered, and documented borehole is a genuine selling point in Johannesburg, where water supply interruptions are a real and recurring concern. Johannesburg Water’s own figures show non-revenue water running at 44.8% (2024/25 audited figures), and the city’s reservoir system holds roughly 27 hours of citywide storage buffer — a number that concentrates the mind when there is a burst main in your street.

For buyers, access to an independent water source reduces dependence on that constrained municipal supply. That has real value. How much value depends on the borehole’s yield, the quality of the installation, and what the buyer intends to use the water for.

As a rough guide, complete borehole systems in Johannesburg typically cost R40,000–R150,000 to install new, with most falling between R60,000 and R100,000, and borehole pumps typically R15,000–R35,000 installed. A buyer who sees a registered, tested, well-maintained system in place is paying for something they would otherwise have to buy themselves — and they know it. An undocumented system, by contrast, is a liability they will price accordingly or walk away from.

For an overview of what full borehole systems involve and cost, the borehole drilling guide covers the components buyers will ask about.

What sellers often overlook

Several disclosure points catch sellers off guard:

• Grey-water mixing: if your borehole feeds into a system that also handles municipal water or grey water, declare the configuration clearly. Buyers need to understand what they are maintaining.
• Irrigation-only vs. potable use: if the borehole has only ever been used for garden irrigation and is not plumbed for drinking water, say so explicitly. Do not let a buyer assume potable quality without confirmed test results.
• Pump age and condition: a pump nearing end of life is a known defect if you are aware of it. Borehole pumps typically last somewhere in the region of 10–15 years, though this varies considerably with water quality and usage — confirm the installation date and service history.
• Borehole location on the erf: the exact position should be on the driller’s report. If it is near a septic tank or sewer line, that proximity is material and must be disclosed.
• Johannesburg Water notification: Johannesburg Water asks property owners to notify them of private water sources. Check www.joburg.org.za for current requirements, as these can be updated.

Thinking of having the borehole properly assessed or the pump replaced before you go to market? Compare quotes from local specialists — vetted installers, no obligation.

Preparing for a smooth transfer

The sellers who have the easiest time are the ones who treat borehole documentation the same way they treat their electrical compliance certificate — gather it early, before the property goes on show. Compile the folder, get the water tested, confirm registration status with DWS, and brief your estate agent so they can answer buyer questions accurately.

If there are gaps — missing driller’s report, lapsed registration, no recent water test — address them before listing rather than negotiating concessions under pressure. A buyer who discovers an unregistered borehole during due diligence will use it as leverage. A seller who hands over a complete folder on day one is in a much stronger position.