Red Flags in a Borehole Quote

Getting water independence in Johannesburg is a reasonable goal — the city’s reservoir system holds roughly 27 hours of citywide storage buffer, and non-revenue water losses sit at 44.8% according to Johannesburg Water’s 2024/25 audited figures. A borehole can make a real difference. But a poorly worded quote can commit you to a project that delivers very little water at a very high price, with no recourse when things go wrong.

Reading a borehole quote properly takes about twenty minutes. The sections below tell you exactly what to look for — and what should make you pause.

The lump-sum quote with no line items

The single clearest red flag is a quote that gives you one number — say “complete borehole installation” — with nothing underneath it. You cannot evaluate what you are buying, you cannot compare it with another quote, and you have no basis for a dispute if the finished job falls short.

A legitimate quote should separate, at minimum: drilling (priced per metre or to a stated depth), steel or uPVC casing (quantity and specification), pump supply and installation, electrical connection, pipework to your storage tank or distribution point, and any testing fees. If a contractor is unwilling to itemise, ask yourself why.

Vague or missing depth commitment

Borehole drilling in Johannesburg is priced per metre, so the total cost depends directly on how deep the driller goes. A quote that says “drilling to water” without specifying a maximum depth or a target depth range leaves you exposed. The driller could stop at a shallow depth that yields very little, or could keep going well past a reasonable stopping point and bill you accordingly.

A reasonable quote states a planned drilling depth or depth range, and explains what happens if water is not found within that depth. Typical complete borehole systems in Johannesburg run R40,000–R150,000, with most falling between R60,000 and R100,000 — that spread exists partly because depth varies significantly between sites.

No casing specification

Borehole casing lines the hole to prevent collapse and contamination. The quote should state the casing material (steel or uPVC), the diameter, and the length to be installed. “Casing as required” or no mention of casing at all is a warning sign. Inadequate casing is one of the more common causes of borehole failure or contamination within the first few years.

For drinking-water use, water quality must meet SANS 241 (2024 edition), the South African drinking-water quality standard. That starts with a properly cased borehole that keeps surface runoff out — a casing spec written into your contract is the first line of defence.

Yield testing not mentioned

Drilling a hole is not the same as delivering water. Yield testing (also called a pump test or aquifer test) measures how much water the borehole can sustainably produce. Without this, you do not know whether your borehole can supply a household or barely fills a bucket.

If yield testing is not listed as a line item or at least mentioned in the scope, ask the contractor directly: will you do a yield test, who pays for it, and will you provide a written result? If the answer is vague, that matters. For context on what goes into a properly scoped drilling project, the borehole drilling guide on WaterQuotes covers the full process from site assessment through commissioning.

No policy on a dry or low-yielding borehole

Boreholes can and do fail to produce adequate water — Johannesburg’s geology varies considerably across suburbs. A professional contractor will have a written position on this: perhaps a partial refund of drilling costs if a target yield is not reached, or a clear statement that drilling is charged regardless of outcome. Either position is workable. What is not workable is silence on the matter.

If the quote says nothing about this and the contractor has not raised it, ask them to put their position in writing before you proceed. The Consumer Goods and Services Ombud (CGSO) handles disputes between consumers and service providers — having a written quote with a stated yield policy is important evidence if a dispute arises.

Before you commit to any driller, it helps to see what a properly itemised quote actually looks like. Compare 3 free quotes — vetted installers, no obligation.

Pump specifications missing or mismatched

Borehole pumps typically cost R15,000–R35,000 installed, so they are a material part of the project cost. The quote should name the pump brand and model, the kilowatt rating, the flow rate, and the head (the vertical distance it can push water). A generic reference to “submersible pump” tells you nothing.

A pump undersized for your depth will underperform or fail early. A pump oversized for a low-yield borehole can pump the hole dry and damage itself. The pump specification should be matched to the yield test result — which is another reason yield testing needs to happen before commissioning, not after.

Contractor registration and insurance

The National Consumer Commission (NCC) and its associated framework require that contractors operating in South Africa meet certain consumer-protection obligations. Separately, borehole and groundwater contractors should ideally be registered with a relevant industry body. Ask to see proof of registration and ask whether the contractor carries public liability insurance.

This is not about bureaucracy — it is about what happens if something goes wrong on your property. An unregistered, uninsured contractor leaves you carrying the risk.

Also check whether the quote references any workmanship warranty period. “No warranty” or silence on the matter is a red flag. A standard minimum to look for, as a rough guide, is a one-year workmanship warranty — confirm via quotes from multiple contractors what is typical in your area.

How to read a quote line by line

When you receive a quote, go through it with these questions:

Quote element	What to look for	Red flag
Drilling cost	Price per metre with a stated max depth	Lump sum, no depth limit
Casing	Material, diameter, and length specified	”Casing as required” or absent
Yield testing	Listed as a line item with a result promised in writing	Not mentioned
Dry-hole policy	Written position on what happens if yield is inadequate	Silence
Pump	Brand, model, kW, flow rate, head	”Submersible pump” only
Warranty	Duration and what it covers	No warranty stated
Contractor details	Registration number, insurance confirmation	Not provided on request

If you are comparing multiple quotes, a deeper look at how pricing is structured — and why the cheapest number is not always the best deal — is covered in this breakdown of cheap borehole quotes.

If you want to put several contractors' quotes side by side on the same scope, that comparison is easier than starting from scratch. Get comparable quotes from vetted drillers — no obligation, no cold calls.

Before you sign

A borehole is a long-term asset — maintained properly, it can serve a property for decades. It is also a significant capital outlay. Taking an extra day to ask the questions above, get vague items clarified in writing, and check contractor credentials is time well spent.

If a contractor resists providing written clarification on any of the items above, that resistance itself is information. Reputable drillers expect homeowners to ask these questions and will answer them without friction.