JoJo Tank Installation Prices: What Installers Charge and Why

Buying a JoJo tank is straightforward. Understanding what the full installed cost will be — and why two quotes for the same tank size can differ by tens of thousands of rands — is where most Johannesburg homeowners get caught out. This article breaks down what installers actually charge, what drives the variation, and how to read a quote sensibly before you commit.

The tank price is just the starting point

JoJo tanks are manufactured products with published pricing, so the tank itself is relatively predictable. For current retail pricing and size options, our guide to JoJo tank prices and sizes covers what you can expect to pay at the point of purchase.

But the tank sitting in a yard does nothing on its own. Every installation involves at least the following additional work:

• A stable base — concrete slab, compacted gravel, or purpose-built stand
• Inlet plumbing — connecting the tank to a roof downpipe, municipal supply, or both
• Outlet plumbing — getting water from the tank to the house
• A pump — gravity-fed systems work only if the tank is elevated; most Johannesburg homes need a pump
• Level switches or float valves — to prevent overflow and manage refilling
• Optional filtration — especially if the water will be used for drinking or cooking

That combination is what pushes the real cost well above the sticker price of the tank.

What installers typically charge, broken down

Based on what vetted installers consistently quote for Johannesburg residential work, here is a rough guide to the component costs:

Component	Typical range
Concrete base or slab (standard)	R2,500–R6,000
Basic inlet/outlet plumbing	R3,000–R8,000
Pump (supply and install)	R15,000–R35,000
Pressure controller or level switch	R1,500–R4,000
Labour (full day, 1–2 plumbers)	R3,000–R7,000
Basic sediment filtration	R2,000–R5,000

These are ranges, not guarantees. Confirm every line item with your own quotes. A complete tank-and-pump backup system typically costs R20,000–R40,000, with more comprehensive whole-house setups around R55,000. You can read more about what those packages include in our overview of water tank installation costs.

Why quotes vary so much between installers

A R15,000 difference between two quotes for what sounds like the same job is not unusual, and it is rarely explained by one installer being dishonest. The most common reasons for variation:

Pump specification. A basic pressure pump costs far less than a variable-speed inverter pump. Both will move water, but the inverter pump is quieter, gentler on the system, and more energy-efficient. Installers who quote a better pump will quote more.

Base quality. A gravel bed costs less than a reinforced concrete slab. If a tank shifts or settles unevenly, fittings crack and you pay to fix it. Cheaper quotes often cut here.

Plumbing complexity. A tank installed next to a single tap point is simple. Running pipework across a large property, through walls, or into a roof-fed system is not. Quotes that look identical may be solving quite different plumbing problems.

Municipal connection work. If the installation includes a connection to the municipal supply line — so the tank refills automatically when municipal water is available — that involves a check valve, isolator, and sometimes a plumber with a municipal endorsement. That adds cost and is often omitted from the cheapest quotes.

Warranty and after-service. Some installers include a workmanship warranty; others do not. This is worth asking about explicitly.

Unsure which quote is pricing the work correctly? Compare 3 free quotes — vetted installers, no obligation.

The municipal supply picture in Johannesburg

Johannesburg Water’s own figures show non-revenue water sitting at 44.8% for 2024/25 — nearly half the water entering the system does not reach a paying tap. The city’s reservoir buffer covers roughly 27 hours of citywide demand. Neither figure is cause for panic, but together they explain why so many Johannesburg homeowners treat a backup tank not as a luxury but as basic risk management.

A properly installed JoJo system that automatically draws from the municipal supply when available — and switches to stored water during an outage — is the most practical answer to that intermittency. Getting that automatic switchover right is precisely where installation quality matters most, and where the cheapest quote sometimes creates problems later.

Questions worth asking every installer before you sign

Do not treat a quote as a fixed menu. These questions will quickly reveal whether an installer knows what they are doing:

1. What pump are you specifying, and why that model? If they cannot explain it, that is a concern.
2. What type of base will you install, and is it included in the quote?
3. Will the tank connect to the municipal supply with a check valve and isolator?
4. Is the plumbing rated for potable water? If you intend to use the stored water for drinking, all pipework and fittings should meet SANS 241 (2024 edition) requirements for potable water contact.
5. What is your workmanship warranty, and is it in writing?
6. Are you a registered plumber? For any work touching the municipal supply, this is not optional.

How tank size affects the installed cost

A larger tank costs more to buy, but it does not always cost proportionally more to install. The pump, base, and plumbing work largely scales with complexity of the site rather than tank volume. A 5,000-litre tank on a simple installation may cost only marginally more than a 2,500-litre one in total installed terms, because the labour and fittings are similar.

Where size does affect installation cost significantly is when a larger tank requires a heavier reinforced base, a stronger pump to maintain pressure, or structural work to accommodate it in a confined space.

For a fuller picture of how backup water systems — including tank options and alternatives — compare in terms of cost and coverage, the backup water systems pillar page is a useful reference before you start calling installers.

Ready to see what installers actually quote for your property size and tank spec? Get three free installer quotes — no commitment required.

Getting a quote that is actually comparable

The single most effective thing you can do before inviting installers is write down exactly what you want the system to do: which taps it should serve, whether it needs to feed the geyser, whether you want drinking-quality filtration, and how much storage you are aiming for. Hand that same brief to every installer you approach.

When you receive quotes, ask each one to itemise the tank, base, pump, plumbing, and labour separately. That makes comparison honest. A cheap total price hiding an undersized pump or a gravel base where your site needs concrete is not actually a good deal.