01
Executive overview
Key findings
22,127,345 m³: water entering Porto's distribution system in 2024, all bought in bulk from Águas do Douro e Paiva
824.4 km / 572.2 km / 642 km: water mains (2024), sewers (2024) and stormwater collectors (2022) run by one municipal company
11.76%: non-revenue water in 2025, below the 12.75% target in the municipal delegated management contract
€59.4 million: turnover in 2025, with zero bank borrowings at year-end
02
Buyer relevance
Who the report is for
Bulk supply and resource planners
Set Porto's 22,127,345 m³ of bulk-supplied water in 2024 against city storage of 125,450 m³ and the 2026 bulk tariff of €0.3944/m³.
Public policy and regulatory teams
See how the municipality, ERSAR, the delegated management contract and the bulk supplier divide responsibility for Porto's service.
Wastewater and drainage contractors
Locate the €4.5 million treatment plant program and the NORTE 2030 renewal of 15.4 km, both running into 2027.
Lenders and municipal finance analysts
Read 2025 turnover of €59.4 million, EBITDA of €20,724,480 and zero bank borrowings against investment execution of 67.4%.
03
Decision scope
Questions answered
Where does Porto's water come from?
All of it is bought from Águas do Douro e Paiva, which serves 22 municipalities and about 1.8 million people; Porto bought 20,724,716 m³ in 2022.
How well does the drinking water network perform?
Non-revenue water was 11.76% and safe water 99.76% in 2025, both better than the contract targets of 12.75% and 99.44%.
Where is the system weakest?
Flooding reached 0.79 occurrences per 1,000 connections against a target of 0.70 in 2025, and discharge compliance was 98% against 100%.
Who sets Porto's water tariffs?
The municipal council, after an ERSAR opinion; the 2026 update of 2.8% was ratified in January 2026 under the delegated management contract.
04
Inside the report
Inside the complete report
Executive Overview
1. Water Resource Profile
2. Governance and Institutional Framework
3. Infrastructure and Service Delivery
Strategic Outlook and Opportunities
Source Register
05
Public preview
What to watch next
Strategic Outlook and Opportunities
Completion of Freixo biogas recovery in the first half of 2027; NORTE 2030 works through 2027; the FY 2026 investment execution rate; the 2027 tariff update.
2. Governance and Institutional Framework
The 2026 contract results; ERSAR's assessment of 2025; the 2027 tariff update; the bulk supplier's 2027 tariff.
3. Infrastructure and Service Delivery
Flooding and discharge compliance in 2026; the wastewater emergency response level; complaint volumes; discharge licensing at the two treatment plants.
1. Water Resource Profile
Investment at the bulk supplier's Lever intake; any drought restrictions on the Douro system; whether the Freixo reuse pilot moves to production.
Assets, service indicators against 2025 contract targets, customer service levels and investment by area.
06
Included
What you receive
The complete PDF report: 10 pages, 6 sections, 11 tables and a register of 21 sources.
This edition
November 2026, First edition.
07
Evidence & method
Evidence and method
The report draws on Águas e Energia do Porto's audited annual reports for 2017 to 2024 and its 2025 integrated management report, ERSAR's service-quality assessments, the 2026 tariff and service-level reports, the bulk supplier's published tariffs, INE population data, and 2026 municipal and press reports on governance and projects.
Sources
21 sources, listed in the report's source register. Evidence current to 7 November 2026. Principal data periods: FY 2025 integrated management report (year ended December 31, 2025); audited annual reports for FY 2017 to FY 2024; ERSAR service-quality assessments for 2020 to 2024; the 2026 general tariff; the bulk supplier's 2026 tariff. Status of tariffs, governance and projects checked on November 7, 2026. All currency is euros (€)..
Evidence boundaries
This report uses authoritative source material available at the stated research cutoff. It distinguishes published facts, calculated values and analytical interpretation. No independent modelling is performed. Forward-looking analysis reflects published plans, documented trends and stated uncertainties. It does not constitute legal, financial, investment or engineering advice.
08
Lead analyst
Robert C. Brears
Founder, Our Future Water Intelligence
Robert C. Brears is a water-security specialist and author whose work examines utility governance, infrastructure investment, climate resilience and long-term water-system change for executive and policy audiences.
- Decision-focused utility intelligence
- Published water-policy author
- Evidence-grounded system analysis
09
Buyer FAQs
Before you purchase
Who can use the report?
Licensed for internal use within one purchasing organization. The PDF and its contents may be shared with colleagues within that organization. External redistribution, resale and public publication are prohibited without permission.
How is the report delivered?
The PDF is available to download immediately after confirmed payment, through our secure delivery system.
Can my organization buy wider access?
Institutional purchasing: For invoice enquiries, multi-organization licensing or broader access requirements, contact Our Future Water Intelligence.
10
Water Systems Overview: Águas do Porto
- Format
- Length
- 10 pages
- Edition
- November 2026, First edition
- Price
- USD 499
11
Report details
Publication details
- Publisher
- Our Future Water Intelligence
- Report family
- Water Utility Intelligence Report
- Edition
- November 2026, First edition
- Format
- Length
- 10 pages
- Reference
- OFW_EXT_WATER_SYSTEMS_OVERVIEW_AGUAS_DO_PORTO_a5cd7d671543
- Evidence current to
- 7 November 2026
14
Explore this report family
More Water Systems Overview reports
Explore the same report family covering other utilities.
Water Systems Overview: Aguas Andinas
- Geography
- Greater Santiago, Metropolitan Region, Chile
- Edition
- November 2026, corrected edition
- Length
- 11 pages
Water Systems Overview: Berliner Wasserbetriebe
- Geography
- Berliner Wasserbetriebe
- Edition
- October 2026, First edition
- Length
- 11 pages
Water Systems Overview: Department of Energy, Abu Dhabi Emirate
- Geography
- Department of Energy, Abu Dhabi Emirate
- Edition
- October 2026, First edition
- Length
- 14 pages