Water Infrastructure Investment and Project Pipeline in Amsterdam

Executive overview

Key findings

10 million m³ a year: drinking water capacity from two Waternet measures planned before 2030 (2024 regional action plan), with Weesperkarspel's +6 million now expected in 2031

EUR 54 million: estimated value of the Weesperkarspel slow sand filter build-team contract, excluding VAT

EUR 160.8 million: water authority investment planned for 2026 across its 20-municipality area, against about EUR 70 million a year delivered in recent years

EUR 388.0 million: water authority wastewater investment planned for 2026–2030, whole area (calculated)

Buyer relevance

Who the report is for

Civil and process contractors

Time bids for the RWZI Amsterdam-West sludge dewatering works, planned for construction in 2027 to 2029, and the Weesperkarspel filter.

Treatment equipment suppliers

Identify packages such as prefab elements for 12 new filter beds and the micropollutant steps at Amstelveen, Uithoorn and De Ronde Venen.

Engineering consultants

Track the post-2030 drinking water options, including the Weesperkarspel/Loenderveen expansion of 8 million m³ a year in 2031.

Investors and lenders

Weigh the water authority's net debt ratio, projected to rise from 248% in 2026 to 303% in 2030, against its investment plan.

Decision scope

Questions answered

How much does the water authority serving Amsterdam plan to invest?

EUR 160.8 million in 2026 and about EUR 158.2 million a year on average from 2027 to 2030, across its whole 20-municipality area.

What drinking water capacity is being added before 2030?

Two Waternet measures totalling 10 million m³ a year: +5 at Leiduin and +5 through a new bulk supply from PWN. Weesperkarspel's +6 is now expected in use in 2031.

What is the largest risk to these projects?

Delivery: planned investment of EUR 160.8 million compares with about EUR 70 million a year delivered recently, and several projects are already delayed by capacity shortages.

How much does the city spend on sewers?

The City of Amsterdam's sewer, stormwater and groundwater programme totals EUR 384.0 million of investment over 2022 to 2027, peaking at EUR 77.2 million in 2024.

Inside the report

Inside the complete report

Executive Snapshot

1. Why This Matters Now in Amsterdam

2. Current Position

3. Key Programmes, Projects and Investment

4. Policy, Regulation and Institutions

5. Risks and Constraints

6. Strategic Implications

7. What to Watch

Source Register

Public preview

What to watch next

1. Why This Matters Now in Amsterdam

The water authority's 2027 budget, expected in late 2026, and whether it keeps the 2026 investment level.

2. Current Position

Actual water authority investment for 2026 against the EUR 160.8 million plan; a successor to the city's sewer programme, which ends in 2027.

3. Key Programmes, Projects and Investment

The execution credit for Amsterdam-West sludge dewatering; award of the Weesperkarspel contracts; selection of a preferred option for the Weesperkarspel/Loenderveen expansion and WAAG.

4. Policy, Regulation and Institutions

Any government response to the Rli on financing rules; national Belastingplan 2027 changes to the tap water tax, which affect bills but not utility revenue; decisions on the water authority's 2027 levies.

A report page with two tables listing Amsterdam drinking water and wastewater projects, their estimated values, procurement or design stage and planned timelines. — Sample page · page 5 of 11
Section 3: the drinking water and wastewater project tables, with value, stage and timeline for each named scheme.

Included

What you receive

The complete PDF report: 11 pages, 9 sections, 11 tables and a register of 18 sources.

This edition

November 2026, First edition.

Evidence & method

Evidence and method

The report draws on the water authority's 2026 budget and five-year investment programme, Waternet's regional capacity plan and procurement notices to June 2026, the city's sewer programme 2022–2027, ACM and ILT regulatory reviews, provincial permits and the city's climate-adaptation study.

Sources

18 sources, listed in the report's source register. Evidence current to 1 November 2026. Principal data periods: water authority budget and investment programme 2026–2030 (October 2025); municipal sewer programme 2022–2027; drinking water capacity plan published 2024; procurement notices to June 2026; regulatory cost figures for 2023–2025. All currency is euros (EUR)..

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.

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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