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Executive overview
Key findings
375 municipalities: served directly at December 31, 2025, 371 of them under one regional concession running to 2060 (the company's investor profile gives 376)
R$70 billion: investment planned for 2024–2029; R$15.2 billion of capital expenditure in 2025 and about R$20 billion guided for 2026
30.5%: total distribution losses index at December 31, 2025, against 34.6% at the end of 2012
December 31, 2029: contractual deadline for 99% water coverage and 90% sewage collection and treatment, four years ahead of the national 2033 date
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Buyer relevance
Who the report is for
Infrastructure investors and lenders
Compare second-half 2026 investment with the R$20 billion guidance and follow net debt of R$34.2 billion at June 30, 2026 into the November 2029 tariff review.
Municipal officials in URAE-1
Read universalization results to September 2026 by category, including informal and rural sewage at 71.39% of target, before ARSESP validates them.
Water resource and drought planners
See how the Paraíba do Sul transfer and night-time pressure reduction kept the Cantareira at 36.7–39.9% of useful volume in July 2026, against about 16% without them on SABESP's estimate.
Engineering and treatment contractors
Find dated status for ETE Perus, the ETE ABC expansion, the IntegraTietê siphon and the 4.4 million-meter smart metering program.
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Decision scope
Questions answered
How large is SABESP's system?
It had 9,487 thousand water connections and 8,230 thousand sewage connections at June 30, 2026, and its annual filings put the networks at 93,163 km of water pipes and 63,635 km of sewer lines at the end of 2023.
Is the metropolitan water supply still under drought measures?
Yes. Night-time pressure reduction, in place since August 2025, was cut from 10 to 8 hours from August 2026 after the Cantareira moved from band 3 to band 2 of its contingency curve.
How did the first tariff adjustment under the concession work?
ARSESP calculated an equilibrium tariff of R$6.7673/m3 against an updated contract tariff of R$6.7655/m3, and customer tariffs rose 6.1106% from January 1, 2026.
Where is universalization furthest behind?
On SABESP's results to September 2026, informal and rural sewage units were at 71.39% of target and new sewage-treatment units at 88.73%, while urban water and sewage units were above target.
How fast is SABESP investing?
It recorded R$15.2 billion of capital expenditure in 2025, guided about R$20 billion for 2026 and reported R$7,458 million in the first half of 2026.
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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
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Public preview
What to watch next
1. Water Resource Profile
Monthly contingency band decisions for the Cantareira through the 2026–2027 rainy season; whether night-time pressure reduction is ended or extended; how the Paraíba do Sul transfer limit is set for 2027; and operational use of the Guarapiranga and Billings integration under EMAE ownership.
2. Governance and Institutional Framework
ARSESP's tariff decision for January 2027; validation of 2025 and 2026 universalization results; the regulatory agenda after 2024–2025; and any change in board composition under the Investment Agreement.
3. Infrastructure and Service Delivery
Validated universalization results for informal and rural sewage; commissioning of the ETE Perus second stage; network length and loss figures in the next annual filing; and the São José dos Campos smart metering rollout as a test for São Paulo city.
Strategic Outlook and Opportunities
Second-half 2026 investment against the R$20 billion guidance; the number of active works against the June 2027 peak; validated universalization results; Cantareira band decisions and the 2027 transfer limit; net debt and ratings after the 2026 issuance; and preparation for the November 2029 tariff review.
Section 3 sets network length, service indicators and water losses side by side in dated tables.
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Included
What you receive
The complete PDF report: 12 pages, 6 sections, 13 tables and a register of 25 sources.
This edition
October 2026, First edition.
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Evidence & method
Evidence and method
The report draws on SABESP's annual reports filed with the US Securities and Exchange Commission for FY 2016 to FY 2025, its June 2026 interim financial statements and investor relations disclosures. It also uses ARSESP tariff notes and deliberations, national and state water agency publications, and dated press and government reports on drought measures and major works.
Sources
25 sources, listed in the report's source register. Evidence current to 30 October 2026. Principal data periods: FY 2025 annual report (year ended December 31, 2025); first-half 2026 interim results (six months to June 30, 2026); tariffs in force from January 1, 2026; drought measures to August 2026; universalization results to September 2026. Status facts checked October 30, 2026. All currency is Brazilian reais (R$) unless marked US$..
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.
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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
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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.
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Water Systems Overview: SABESP
- Format
- Length
- 12 pages
- Edition
- October 2026, First edition
- Price
- USD 499
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Report details
Publication details
- Publisher
- Our Future Water Intelligence
- Report family
- Water Utility Intelligence Report
- Edition
- October 2026, First edition
- Format
- Length
- 12 pages
- Reference
- OFW_EXT_WATER_SYSTEMS_OVERVIEW_SABESP_b8e328a576c6
- Evidence current to
- 30 October 2026
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