Water Finance in South Africa: Rent-to-Own and Water Purchase Agreements

Water security has become a board-level concern in South Africa. Supply interruptions, ageing municipal infrastructure and rising tariffs push businesses to take control of their own water. The equipment to do that, from boreholes to treatment plants, carries real capital cost. Water finance lets a business secure that equipment without paying the full amount upfront.

This guide explains the main water finance structures, what they fund, and how an installer can offer them through one application process.

What is water finance?

Water finance is a funding arrangement that lets a business acquire water equipment and pay for it over time, rather than settling the full capital cost upfront. It works much like solar finance, applied to water security assets, and the structures mirror it too: a straight water rental, Water Rent-to-Own, or a usage-based Water Purchase Agreement, the water analogue of a PPA.

The principle is simple. Water equipment is a productive asset, so a lender can fund it against the value it delivers. The business gets resilient water supply now and spreads the cost across the years it uses the equipment.

For installers, water finance opens a second product line alongside energy. The same platform that handles solar and battery deals can handle water deals too.

What can be financed under water finance?

Water finance covers equipment, not general business costs. The financeable items typically include:

• Boreholes and pump systems
• Water storage and reticulation equipment
• Filtration and treatment plants
• Reverse osmosis and desalination kit
• Greywater and water reuse systems

The test is the same as for energy assets: the lender funds equipment that produces or secures a measurable resource. General operating costs do not qualify. If you also handle energy projects, the same logic applies to solar PV and batteries, covered in financing batteries and backup power for energy security.

What is a Water Purchase Agreement?

A Water Purchase Agreement is a contract where the client pays for the water the system delivers, rather than for the equipment itself. A funder owns the equipment and the client buys the output.

This mirrors the Power Purchase Agreement model used in solar. The client avoids capital outlay entirely and pays a usage-based rate. The funder carries the asset on its books and earns a return from the water sold over the contract term.

Water Purchase Agreements through ArkFlow run up to 10 years. They suit clients who want to treat water as an operating expense rather than a capital purchase, and who value predictable, usage-linked pricing. The structure works much like the comparison we draw in PPA vs Rent-to-Own.

What is Water Rent-to-Own?

Water Rent-to-Own is a structure where the client rents the water equipment over a set term and takes ownership at the end. It blends the cash-flow benefit of a rental with the long-term value of ownership.

The client pays a regular instalment over the term. During that period the funder retains a security interest in the equipment. At the end of the agreement, ownership transfers to the client. ArkFlow offers Water Rent-to-Own up to 10 years.

This suits businesses that want to own their water infrastructure eventually but cannot or do not want to fund the full capital cost on day one. For a wider view of how rental and ownership structures compare across energy and water, see solar finance structures compared.

How does the water finance process work?

The deal flow for water finance is the same guided process ArkFlow uses across all asset classes, from an accepted proposal through the guided application, prequalification and packaging, to offers back on the deal. The end-to-end flow, the three routes to a lender and how the 1% fee is invoiced are covered in How solar finance origination works.

What does water finance cost the installer?

Nothing to start, and nothing on a deal that does not fund. The 1% finance origination fee applies only where a deal funds through the ArkFlow lender panel, which keeps water finance a low-risk addition to your offering; the mechanics are in the 1% success fee explained.

Ready to add water finance to your product range? Sign up free and build your first water proposal.

Can water and power be financed together?

On most farms and many commercial sites the two problems are really one problem: the pump is the load. Boreholes, pumps, pivots, storage and filtration can be bundled into the same financed package as the generation that runs them — one quote, one credit assessment, one monthly instalment, and a system sized around the pumping schedule it actually has to serve rather than a guess.

One exception, and it matters. The Agro Energy Fund funds the energy asset. It is not there to pay for irrigation infrastructure, and a bundled water-and-power package does not fit inside it.

So an agricultural client faces a real choice: take the grant on a pure energy project and move in months, or bundle water and power on asset finance or rental and move in weeks. Sometimes the answer is both, sequenced — the energy project through the grant, the water package alongside it. See the Agro Energy Fund explained for what the grant does and does not cover.

Frequently asked questions

How long can a water finance agreement run?

Both Water Rent-to-Own and Water Purchase Agreements run up to 10 years through ArkFlow. The right term depends on the equipment, the client's cash flow and the lender's underwriting.

Can I bundle water and solar in one finance deal?

Yes. Water and solar can be packaged into a single application and a single instalment, which is usually how a farm should do it, because the pump is the load. The one place it does not work is the Agro Energy Fund, which funds the energy asset only and cannot pay for irrigation infrastructure.

Are the proposal figures a firm price?

No. Indicative proposal figures are indicative only and not a credit offer. The lender carries out formal underwriting before issuing any binding offer.

Who owns the equipment under a Water Purchase Agreement?

Under a Water Purchase Agreement, the funder owns the equipment and the client pays for the water it delivers. Under Water Rent-to-Own, ownership transfers to the client at the end of the term.