How do digitalisation and reuse support Riyadh’s goals?

Digitalisation through more than two million smart meters, a nationwide SCADA system, and conservation tools such as the Kashf application underpins leak reduction, billing accuracy, and demand management. In parallel, tertiary‑treated wastewater from plants such as the expanded 400,000 m³/day Riyadh South STP is increasingly reused for landscaping and industry, reducing reliance on high‑cost desalination and strengthening climate resilience.

Cover of the “Riyadh Water Systems Overview” report showing a blue water design and hexagonal graphic, highlighting water security, governance, and infrastructure.

Our Future Water Intelligence

Riyadh Water Systems Overview: Security, Governance, and Infrastructure

Q: How is Riyadh’s water transition funded?

Riyadh’s transition is funded through large national allocations under the National Water Strategy 2030 and MEWA’s project pipeline, complemented by NWC capital spending and a PPP portfolio exceeding US$30 billion led by SWPC. Independent Water Projects, Independent Sewage Treatment Plants, and Independent Water Transmission Pipelines attract domestic and foreign investors under BOO and BOOT models while keeping projects aligned with Vision 2030.

Q: What defines Riyadh’s water security model?

Riyadh’s model is based on desalinated seawater conveyed over a 14,000‑km national transmission network, reinforced strategic storage targeted to reach around 119.56 million m³ by 2030, and rapid wastewater treatment and reuse expansion. These assets operate under an integrated framework led by MEWA, SWA, NWC, and SWPC, with national targets to cut NRW from 25–40% to 15% and raise reuse from roughly 21% to 70% by 2030.

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City Water System Insight

Riyadh Water Systems Overview: Security, Governance, and Infrastructure

Compact profile of Riyadh’s desalination‑dominated water security, governance reforms, and multi‑billion‑dollar infrastructure programme under Saudi Vision 2030.

Summary Insight: Riyadh’s water system is defined by extreme natural scarcity, a shift from depleting groundwater to long‑distance desalinated supply, and an intensive national reform agenda targeting efficiency, reuse, and private investment. With desalination now providing around 62% of national water supply, per capita household consumption reduced to 102 liters per day in 2023, and more than two million smart meters deployed alongside an expanded 400,000 m³/day tertiary wastewater plant, the capital offers a strategic case study in transitioning a high‑consumption, subsidy‑dependent system toward circular, climate‑resilient water security.

Target Audience

Utility and NWC Executives: Benchmarking desalination dependence, NRW levels of 25–40%, and wastewater capacity gaps toward 2030.
Regulators and Policy Units: Stress‑testing tariff reform, Water Law implementation, and National Water Strategy 2030 efficiency and reuse targets.
Infrastructure Investors: Assessing PPP pipelines in desalination, bulk transmission, sewage treatment, and stormwater systems across Riyadh and the Middle Sector.

Report Deliverables

End‑to‑end mapping of Riyadh’s resource mix, from non‑renewable groundwater depletion to desalination, transfer pipelines, and strategic storage.
Detailed governance and regulatory analysis covering MEWA, SWA, NWC, SWPC, WTTCO, MAEE, and Vision 2030 water objectives.
Infrastructure and resilience insight spanning bulk desalination, 14,000+ km transmission, 127,000+ km distribution, wastewater and reuse, and stormwater drainage investments.

Five Strategic System Pillars

Resource Architectures: Riyadh’s supply is anchored in desalinated seawater conveyed over a 14,000‑km national transmission system, backed by national strategic storage already expanded from 13 million m³ in 2016 to more than 25 million m³ with a 2030 target of approximately 119.56 million m³.

Service Enablement: The National Water Company operates a 127,000‑km distribution network with programmes adding nearly 2,000 km of new pipelines in Riyadh and its governorates, including 1,192 km of water mains and 18 reservoirs providing 85,000 m³ of additional storage.

Risk Resolution: Historical over‑pumping saw groundwater tables near Riyadh fall by more than 2 metres annually in the 1990s, prompting a structural shift toward desalination, wastewater reuse, and strategic aquifer preservation under the National Water Strategy 2030.

Climate & Fiscal Alignment: With end‑users paying less than 5% of real supply costs and annual subsidies estimated at about SAR 40.2 billion in 2020, tariff restructuring, NRW reduction from 25–40% to 15% by 2030, and reuse expansion from roughly 21% to 70% are central to long‑term sustainability.

Capability & Innovation: Sector reforms combine a new Water Law, establishment of the Saudi Water Authority, PPP leadership via SWPC, and technology adoption programmes that have halved desalination costs, improved efficiency by about 80%, and rolled out more than two million smart meters and a nationwide SCADA system.

Operational Performance & Resilience

Riyadh illustrates a high‑demand but reform‑driven system, with national water consumption reaching 15.8 billion m³ in 2023 and urban demand projected to rise from 15.47 to 17.08 million m³/day between 2024 and 2030 despite per capita cuts. Desalinated seawater’s share of supply jumped from 50% in 2022 to 62% in 2023, while non‑renewable groundwater’s contribution fell to about 18%, underscoring both progress in reducing aquifer stress and the growing exposure to energy‑intensive coastal production.

Infrastructure & Climate Roadmap US$80 Billion+ Water Investments

MEWA has earmarked more than US$80 billion for water projects over the next decade, while NWC’s 2023 infrastructure budget reached about SAR 163.5 billion and a Riyadh‑focused package of US$533 million is delivering nearly 2,000 km of new networks, 18 reservoirs, and major pumping and sewage capacity upgrades.

Expert Briefing: FAQs

How is Riyadh’s water transition funded?
Riyadh’s transition is financed through large national allocations under the National Water Strategy 2030 and MEWA’s US$80‑billion project pipeline, complemented by an NWC infrastructure budget of roughly US$43.6 billion in 2023 and a PPP portfolio exceeding US$30 billion managed by the Saudi Water Partnership Company. Build‑Own‑Operate and Build‑Own‑Operate‑Transfer projects, such as the 570,000 m³/day Jubail 3B desalination plant and future Independent Water Transmission Pipelines and Independent Sewage Treatment Plants, mobilise around 30% foreign capital while keeping assets aligned with Vision 2030 and ESG goals.

What defines Riyadh’s water security model?
Security rests on desalination, long‑distance transfer, and strategic storage, with desalinated water now supplying 62% of national demand, transmission lines exceeding 14,000 km, and storage on track to more than double again by 2030 to cover seven days of municipal use. This supply‑side backbone is coupled with demand‑side measures—cutting per capita household use to 102 liters/day in 2023, deploying more than two million smart meters, and targeting NRW reductions to 15%—plus aggressive reuse expansion to 70% by 2030 via tertiary treatment at plants such as the 400,000 m³/day Riyadh South STP.

How do digitalisation and reuse improve performance?
Digitalisation underpins leak detection, billing accuracy, and asset optimisation, with smart meters covering virtually all urban connections and a unified SCADA platform enabling real‑time control across over 127,000 km of distribution mains. At the same time, reuse volumes grew 12% in 2023 to 555 million m³, and tertiary‑treated effluent is increasingly supplied to landscaping and industry—including renewable water tariffs of around SAR 1.87/m³ in Riyadh 2 Industrial City—reducing pressure on high‑cost desalination and supporting climate resilience in the capital’s water‑energy nexus.

Riyadh Water Systems Overview: Security, Governance, and Infrastructure

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