SA’s next infrastructure crisis is here

The 2025 Green Drop Report, released on 31 March, confirms what anyone living downwind of a broken treatment plant already suspects: the system is failing.

Of 848 wastewater treatment works assessed, 396 (47%) are now in a critical state, up from 39% in 2022.

Broaden the scope to include poorly performing plants, and 61% of all facilities are operating below the minimum required standard. Green Drop certifications (the gold standard of compliance) collapsed from 22 to just 14. Systems scoring “excellent” fell from 14% to 8%.

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As concerning as the numbers are, the trajectory is even more troubling. Plants that were merely underperforming in 2022 have since deteriorated into outright failure.

The causes are structural: underinvestment, vandalism, organised crime targeting infrastructure, chronic municipal mismanagement, and a shortage of qualified technical staff.

Non-revenue water

Non-revenue water (water that enters the system but generates no income, whether through leaks, theft, or unbilled consumption) now sits at a national average of 47%. In Gauteng, that figure exceeds 49%.

Nearly a third of all municipalities are at critical risk for water efficiency.

Strip away the environmental framing and what remains is an economic constraint – on growth, on household welfare, and on the fiscal trajectory. Gauteng produces more than a third of South Africa’s GDP. Consequently, a water deficit there is not merely a regional event; it is a national one.

PwC estimates that climate-related water impacts threaten approximately 5% of GDP over the next twenty years, enough to undermine entire sectors including automotive manufacturing, agriculture, and petrochemicals.

Water scarcity alone, expected to rise by 17% within four years, could shave roughly half a percentage point off annual GDP growth.

The real economy

The human cost is already materialising. Factories in Johannesburg’s Selby district have been without water for over 20 weeks, putting an estimated 4 000 jobs at immediate risk.

Schools cannot reopen fully on hygiene grounds. E. coli was detected in Bezuidenhout Valley in late 2025.

Cholera cases across southern Africa have risen sevenfold in early 2026.

For households in low-income and informal communities, the reality is contaminated storage, tanker queues, and rising private water costs that never appear in official inflation data.

Meanwhile Gauteng’s per capita consumption of 279 litres per day remains more than 60% above the global average, with the burden falling overwhelmingly on those least able to absorb it.

Balance sheet erosion

For the fiscus, the picture is equally corrosive.

Johannesburg’s water utility can only bill for roughly 60% of the water it purchases from Rand Water – an annual revenue deficit of almost R7 billion. Rand Water has now demanded a R2.4 billion deposit against the city’s bad debt.

Emergency water tanker provisioning is reactive and enormously expensive per litre. Johannesburg Water already owes contractors more than R800 million.

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These are not future risks; they are current cash-flow crises that are compounding municipal balance sheet deterioration and feeding directly into the creditworthiness of municipal bonds and the fiscal pressure on National Treasury.

The precedent is instructive: Cape Town’s 2017/18 drought caused an estimated R5.9-R14 billion in economic losses and cost 30 000 jobs. Gauteng’s economic exposure, given its GDP contribution, is several multiples of that.

What makes this crisis particularly frustrating is that it is not, at its core, a spending problem.

Government has committed R156 billion to water and sanitation over the next three years, and bulk water projects worth approximately R139 billion are already underway.

Capital not the constraint

The constraint is not capital, but bankability. South Africa’s institutional investors collectively manage over R5 trillion in assets, while the JSE has a market capitalisation exceeding R20 trillion.

Thus, there is no shortage of money looking for a home.

The problem is that municipal governance is too weak, project structures too opaque, and revenue mechanisms too uncertain to convert available capital into investable infrastructure at scale.

A first-loss tranche from a development finance institution does not eliminate execution risk where a municipality lacks the technical capacity to deliver. A credit guarantee does not solve for regulatory uncertainty.

The financing innovations being proposed (blue bonds, blended finance, performance-based contracts and so forth) are sound in principle, but bankability remains the foundation upon which any of them must be built.

Until governance catches up, the gap between committed capital and functioning infrastructure will continue to widen.

From a pure market perspective, the obvious trade – infrastructure beneficiaries – carries significant execution risk, precisely because of the delivery failures the Green Drop Report documents.

The smarter angle is second-order. Companies with proprietary water security solutions (on-site treatment, recycling, or independent supply) hold a structural advantage that compounds as municipal provision deteriorates.

Read: Can the private sector rescue SA from the coming water crisis?

This is already visible in the mining sector, where operations in the Northern Cape and Limpopo are partnering directly with government because they cannot afford to wait. Business Leadership South Africa has explicitly framed water as “the next crisis” after energy.

For portfolios, stress-test water-dependent holdings against continued deterioration, not recovery. Favour companies that have already built water self-sufficiency into their capex strategies. This reveals a structural advantage that few peers can replicate.

Policy pipeline

Moreover, monitor the legislative pipeline – the Water Services Amendment Bill and the proposed National Water Resources Infrastructure Agency could reshape the investable landscape if governance standards are enforced.

These are not immediate catalysts, but that is where the medium-term optionality sits.

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The broader point is that South Africa narrowly avoided a sovereign downgrade spiral in energy by forcing private-sector participation through necessity. Water is following the same playbook, just earlier in the crisis curve.

The difference is that the economic transmission channels are already active. GDP losses, job destruction, fiscal erosion, and public health deterioration are not projections but present-day realities.

Casey Sprake is a market strategist at AG Capital.