Global Water Market Data
Over 2,100 public–private partnerships have been signed in water since 2005, and a forward pipeline of more than 1,400 projects is now taking shape, increasingly in wastewater reuse and desalination. The charts below replicate the market intelligence The WaterHouse exists to make legible. Every figure is sourced.
Source for all data on this page: Roland Berger analysis, presented by AquaFed (International Federation of Private Water Operators), “Water PPPs, Look Back & Forward: Strategic Takeaways for Investors & Policymakers,” pre-read for the UN Water Conference, 2025.
20-Year Look Back
Of 2,101 deals (2005–2025), infrastructure PPPs outnumber service PPPs nearly four to one.
Service PPP = concession, lease, affermage. Infrastructure PPP = BOT, BOO, IWPP, BTO, BTL, DBF.
Source: Roland Berger analysis / AquaFed, 2025.
China dominates two decades of deal flow, with Brazil and the Philippines distant followers.
Project counts, 2005–2025. China 1,381 · Brazil 142 · Philippines 84.
Source: Roland Berger analysis / AquaFed, 2025.
Of 433 service concessions, Brazil leads, driven by access needs, a clear regulatory framework, and public financing shortfalls.
Share of 433 service PPPs (2005–2025); figures rounded. Source: Roland Berger analysis / AquaFed, 2025.
China alone accounts for ~1,295 of 1,668 infrastructure PPPs (~78%). The chart shows how the remaining 373 distribute.
Share of the 373 non-China infrastructure PPPs (2005–2025); figures rounded. Source: Roland Berger analysis / AquaFed, 2025.
Look Forward
Climate stress is reshaping demand: wastewater treatment & reuse now make up 43% of planned projects, and most of the pipeline is new build rather than retrofit.
Wastewater reuse and desalination together account for 62% of the 1,409 planned projects.
Share of 1,409 planned PPPs. Wastewater Treatment & Reuse = 608 projects; Desalination = 274. Source: Roland Berger analysis / AquaFed, 2025.
Across the pipeline and within its two largest segments, greenfield new build dominates.
Project counts. Total pipeline 1,409 (new-build 958, service 246, retrofit/expansion 205). Desalination 274. Wastewater & reuse 608. Source: Roland Berger analysis / AquaFed, 2025.
The desalination pipeline (274 projects) expands well beyond the Middle East.
Leading markets, per Roland Berger: United States, India, Saudi Arabia, Morocco, Spain, Egypt, and Australia. The great majority are new build (235) rather than retrofit or expansion (33).
Source: Roland Berger analysis / AquaFed, 2025 (planned desalination infrastructure PPPs).
At 43% of the global pipeline (608 projects), this is the largest forward segment.
Leading markets, per Roland Berger: India, United States, Spain, Peru, Saudi Arabia, Egypt, and South Africa. New build (451) again outweighs retrofit and expansion (125).
Source: Roland Berger analysis / AquaFed, 2025 (planned wastewater treatment & reuse PPPs).
Deal Flow Is Live
US$2.8bn investment across four states, to be auctioned by end 2025.
US$1.7bn to be awarded by end 2025, with 31 more PPPs (US$5.5bn+) on the radar.
Considering a PPP model to invest US$3bn toward a US$7bn funding gap for universal access by 2030.
1.7m m³/day capacity by 2030, plus a 30,000-hectare Gharb irrigation PPP.
US$1.2bn investment PPP project.
Azerbaijan's first-ever PPP (300,000 m³/day) awarded in January; Oman's US$142m Nama purification PPP signed in March.
Source: Roland Berger analysis / AquaFed, 2025.
Strategic Takeaways
Rule-based national programs (Brazil, India) accelerated deal flow; ad-hoc rules (USA, South Africa) slow it.
Whether remunicipalizing or deepening concessions, success depends on clear performance KPIs and tariff certainty.
Pipelines are expanding, but affordability and energy sourcing must be embedded early.
Instruments like WIFIA (USA), DBSA (South Africa), and EIB green loans (Spain) are indispensable where municipal balance sheets are weak.
Transparency over tariffs and service levels reduces litigation and protest risk. Saudi Arabia's model shows the upside: clear off-takers, an integrated infrastructure view, sovereign guarantees, and a single national PPP body drove desalination costs to as low as US$0.04 / m³.
Source: Roland Berger analysis / AquaFed, 2025.
Workforce Intelligence
The U.S. water workforce numbers 1.7 million, yet a retirement wave is colliding with thin recruitment pipelines. WaterRising's original survey of utilities quantifies the talent gap and the practices that close it.
WaterRising's November 2024 utility workforce survey: share of surveyed utilities with each practice in place.
n = 16 U.S. water utilities. Source: The WaterRising Institute & The Water Tower, "A Guide for Recruiting and Retaining Talent in the Water Sector," 2024 (supported by the U.S. EPA Innovative Water Workforce Development Grant).
The white paper's roadmap for utilities to close the gap.
This is WaterRising's workforce-as-infrastructure thesis: capital and technology cannot modernize systems that lack the people to run them. Closing the talent gap is a prerequisite to investability.
Water Rights
Before water can be financed, it has to be owned, allocated, and priced. Water rights define who may use water, how much, when, and for what, and they differ sharply by region and legal tradition. Understanding that legal architecture is the foundation of any water market.
Rooted in English common law, riparian rights belong to landowners whose property borders a water body.
“First in time, first in right.” Developed during the 1849 California Gold Rush, when water had to be moved far from streams.
The Evolution
Water law moved from land-bound custom toward permits, environmental limits, and, where water is scarce, formal markets for trading rights. The same arc played out internationally, from equitable-sharing principles to hundreds of transboundary treaties.
Gold Rush miners divert water far from streams; “first in time, first in right” spreads across the West.
Colorado firmly establishes prior appropriation, rejecting riparian claims in arid contexts.
Enables large federal irrigation projects across the West.
Recognizes implied, reserved water rights for Native American reservations.
India–Pakistan accord becomes a model for basin-specific cooperation.
First major codification of “reasonable and equitable utilization” of international basins.
Rights become freely tradable: the first national market-based system.
Transboundary protection and cooperation; later opened to all countries.
Codifies equitable use, no-significant-harm, and duties to cooperate (in force 2014).
Builds one of the world’s most sophisticated markets; ~2,000 GL later recovered for the environment.
UN General Assembly resolution affirms the right to safe drinking water and sanitation.
Transboundary treaties now govern shared rivers and aquifers worldwide.
Markets & Pricing
Where water is scarce, markets reallocate it from lower- to higher-value uses, most often from agriculture to cities. Two decades of western U.S. transactions show the pattern clearly: urban buyers pay a premium, and permanent sales command far more than seasonal leases.
Across 12 western states, 1987–2008 (2008 US$ per acre-foot). Agriculture-to-urban trades consistently outprice within-agriculture trades.
Median prices: ag-to-urban lease $74/AF vs ag-to-ag $19/AF; ag-to-urban sale $295/AF vs ag-to-ag $144/AF. Source: Brewer, Glennon, Ker & Libecap, “Water Markets in the West: Prices, Trading, and Contractual Forms,” NBER Working Paper 13002.
Spot price of California water entitlements ($/AF, at source). The long-run trend is upward pressure punctuated by sharp drought spikes and wet-year reversions.
Approximate annual index levels: Nasdaq-Veles California Water Index (NQH2O) / WestWater Research. Peak drought transactions (2013–2015) approached ~$2,500/AF; 2024 transactions averaged ~$260/AF.
Scarce, drought-prone regions have built the deepest markets.
United States (West). Trading is mostly within-basin due to high transfer costs; California volumes grew through 1990s droughts and stabilized around ~1.5 million acre-feet a year.
Australia (Murray–Darling). Temporary allocation prices spike in drought and fall toward zero in wet years; permanent entitlement prices are steadier and have hit record highs. ~2,000 GL of entitlement has been recovered for the environment.
Chile. Freely tradable since 1981: flexible reallocation, but ongoing debate over equity and speculation.
Over decades, entitlement prices tend to rise with population growth, drought, environmental buybacks, and the shift to higher-value uses. Temporary allocations stay volatile; permanent rights trend up. Even in active basins, traded volumes remain a thin slice of total use (~2–10% in the western U.S.).
Sources: Brewer, Glennon, Ker & Libecap (NBER WP 13002); WestWater Research / Nasdaq-Veles California Water Index (NQH2O); Public Policy Institute of California; Murray–Darling Basin Authority / Australian Government (Water Act 2007). Historical and legal milestones per standard water-law references (Coffin v. Left Hand Ditch Co.; Winters v. United States; Helsinki Rules; UN Watercourses Convention; UNECE Water Convention).
Desalination
When scarcity pushes prices up, the first instinct is to make more water. Desalination converts an essentially limitless resource (the sea) into reliable freshwater, letting arid and coastal economies grow without draining stressed rivers and aquifers. Once a niche fix for the driest places, it is now a mainstream pillar of water security, and the fastest-growing segment of the water market.
The Middle East & North Africa dominates, anchored by large seawater reverse-osmosis plants in Saudi Arabia, the UAE, and Israel.
Approximate share of installed capacity. MENA ranges ~48–55% across sources; Europe ~10%; Asia-Pacific is the fastest-growing region. Source: Global Water Intelligence / DesalData; Statista, 2022–2024.
Billions in new capital expenditure are flowing into projects as water-scarce regions scale up.
Desalination technologies market, US$ billions. Endpoints $27.8B (2025) and $49.8B (2032) at 8.68% CAGR; intermediate years interpolated. Estimates across analysts range ~$37–50B by the early 2030s. Source: Fortune Business Insights, 2025.
Reverse osmosis now accounts for ~70% of global capacity, and energy-recovery devices reclaim 95%+ of the pressure energy older thermal plants wasted.
Record-low tariffs tell the story: Dubai’s Hassyan plant reached ~$0.31/m³ in 2023 (the lowest unified water tariff in the world) while recent Saudi solar-supported projects run around $0.50/m³.
Increasingly, new plants are paired with solar and wind, cutting both cost and emissions, and opening synergies with green hydrogen and brine-mineral recovery.
Development runs through public–private partnerships and Independent Water Producer (IWP) models. Leading builders include IDE Technologies (Israel), Veolia (France), ACWA Power (Saudi Arabia), Doosan (South Korea), Acciona (Spain), and Metito.
State entities anchor the largest programs: Saudi Arabia’s SWCC and Dubai’s DEWA among them. Standout plants: Ras Al-Khair and NEOM (Saudi Arabia), Taweelah and Jebel Ali (UAE), and Sorek (Israel).
Sources: Global Water Intelligence / DesalData; Statista; Fortune Business Insights (market size); Arab Center Washington DC; company and utility disclosures. Installed capacity ~91.5M m³/day (2024); ~95M m³/day produced across ~22,000 plants in 177 countries. Regional shares are approximate.
Beyond New Supply · Reuse
Desalination makes new water; reuse makes the water we already have go further. Every liter treated and returned to use is a liter not withdrawn from a stressed river or aquifer, yet only about 11% of the world’s treated wastewater is reused today. The headroom is enormous, and the leaders show what’s possible.
Share of wastewater reused. Israel recycles roughly four times more than any other nation; the global average leaves vast room to grow.
Israel ~90% (mostly agricultural irrigation); Spain ~20%; global average ~11% of treated wastewater. Source: UN / UNEP; University of Montpellier; national water agencies.
Singapore treats used water to ultra-pure standards through advanced multi-barrier membranes, then returns it to the supply. NEWater already meets about 30% of national demand and is targeting 55% by 2060.
It is the clearest working model of a closed, circular water loop, and proof that “waste” water is simply a resource in the wrong place. Reuse pairs naturally with desalination: hybrid systems reuse first and top up from the sea.
Sources: UN World Water Development Report / UNEP (11% global reuse); PUB Singapore (NEWater); Israel Water Authority; University of Montpellier water-reuse ranking.
The Biggest Lever · Agriculture
If reuse and desalination expand supply, agriculture is where demand concentrates. Farming accounts for roughly 70% of the world’s freshwater withdrawals, so a modest efficiency gain here outweighs almost anything achievable elsewhere.
Agriculture dwarfs industrial and municipal use, which is exactly why it is the highest-leverage place to save.
Approximate share of global freshwater withdrawals: agriculture ~70%, industry ~18%, municipal ~12%. Source: FAO AQUASTAT.
Much of the world still irrigates by flooding fields; efficient delivery is the opportunity. Drip and precision irrigation cut water use by 30–60% versus flood methods by delivering water straight to the root, on schedule.
Paired with sensors and data, precision irrigation has lifted yields by up to 25% while using far less water, turning the largest water user into the largest source of savings.
Sources: FAO AQUASTAT (sectoral withdrawals); FAO and field studies on drip / micro-irrigation efficiency; Idrica (precision-irrigation yield gains).
The Intelligence Layer · Digital Water
Before building or buying more water, the cheapest gains are in the water we already lose. Roughly 30% of treated water never reaches a paying customer, lost to leaks, theft, and metering gaps. That is about 126 billion m³ a year, worth some $39 billion. Sensors, AI leak detection, and digital twins turn opaque pipe networks into monitored, optimized systems.
The distance between the global average and best-in-class utilities is the prize digital water is built to capture.
Non-revenue water as a share of supply: global average ~30%; World Bank benchmark <25%; best-in-class (Singapore, Netherlands) ~5%. Source: World Bank; IWA; Non-Revenue Water studies.
Pressure and acoustic sensors pinpoint leaks in hours instead of months. Digital twins simulate the whole network in real time, cutting treatment energy by ~25% and letting operators pre-empt failures.
This is the same logic that underpins the market itself: better data makes water legible: to operators, regulators, and the capital that funds it.
Sources: World Bank (non-revenue water; <25% benchmark); IWA / global NRW quantification (~126 billion m³/yr, ~$39B); Idrica (digital-twin energy savings).
Working With Nature · Green Infrastructure
Not every water solution is built from concrete. Wetlands, forests, and healthy watersheds filter, store, and regulate water for a fraction of the cost of engineered plants, while restoring ecosystems and storing carbon. The classic proof is New York City.
Facing a filtration mandate, the city protected its Catskill watershed instead of building a plant, and kept some of the largest unfiltered drinking water in the country.
Approximate capital cost, US$ billions: watershed protection ~$1.5B vs. a filtration plant ~$6B (plus ~$250M/year to operate). Source: NYC DEP; ecosystem-services literature.
The Catskills program planted 2,000+ acres of forested riparian buffers, and 93% of watershed farms joined voluntarily, protecting supply for roughly 9 million people at a fraction of a plant’s cost.
Green infrastructure rarely replaces engineering outright, but it stretches it, delivering water, biodiversity, and carbon benefits from the same investment. Alongside reuse, efficiency, and digital tools, it completes a portfolio that is cheaper and more resilient than any single fix.
Sources: New York City Department of Environmental Protection; Perrot / ecosystem-services analyses of the NYC watershed program.
Decision-grade data, aggregated and made legible, is the binding constraint between patient capital and the infrastructure it wants to fund.
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