Delfluent

What Delfluent does

Delfluent Services B.V. is a Dutch wastewater treatment operator that runs the AWZI Harnaschpolder plant in Den Hoorn (the largest in the Netherlands at 1.3 million population equivalents and 250,000 m³/day) and AWZI Houtrust in Den Haag (430,000 v.e., 79,000 m³/day), under a 30-year Design Build Finance Operate (DBFO) public-private partnership with Hoogheemraadschap van Delfland signed in December 2003. The company treats wastewater for approximately 1.5 million inhabitants and 40,000 businesses across eleven municipalities in The Hague region, supported by 19 pumping stations and a 50,000 m³/hour effluent outfall to the North Sea. Headcount is approximately 50–60 employees, originally transferred from HHDelfland at contract inception with retention of rights.

The technology stack is built on biological wastewater treatment using activated sludge processes, augmented by an integrated resource recovery layer: anaerobic sludge digestion produces biogas that delivers over 50% energy self-sufficiency at Harnaschpolder and over 40% at Houtrust, with the green gas upgrading installation contributing 1.9 million m³ of grid-quality gas annually. Process innovations include the Rolapac floating layer removal system (70% pollution reduction, registered IP), odorless sludge loading with composite containers, effluent heat recovery sold to Warmtebedrijf Eneco Delft for district heating, and pilots in struvite recovery and Harkos granular sludge technology with TU Delft and Royal HaskoningDHV. Asset management is delivered under ISO 9001, ISO 14001, and PAS 55 certifications.

Revenue is generated from three streams: a dominant fixed-plus-variable service fee from HHDelfland under the DBFO contract (the fee includes a fixed component primarily covering financing costs and a variable component tied to flow rate and treated pollutant load), green gas sales into the Westland Infra network, and heat sales to Eneco Delft. Delfluent Services has been 100% owned by Evides Industriewater since December 2012 and functions as a Special Purpose Vehicle within the Delfluent consortium (Evides 54.5%, DIF 35.5%, Strukton 10%); the consortium is bound to the concession to approximately 2033, making this a contracted infrastructure operation with limited organic growth runway but high contractual revenue visibility.

Name

Delfluent

Legal name

Delfluent Services B.V.

Website

https://delfluent-services.nl

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

1–10 employees

Short description

Delfluent Services B.V. operates the Netherlands' largest wastewater treatment plant under a 30-year public-private DBFO contract with Hoogheemraadschap van Delfland, serving 1.5 million residents and 40,000 businesses in The Hague region and recovering energy, green gas, and heat from treatment byproducts.

Ownership category

akta.pro rank

Product category

Wastewater Treatment Services

NAICS

Sewage Treatment Facilities (22132), Waste Collection (5621)

SIC

Electric, Gas & Sanitary Services (4900), Sanitary Services (4950)

akta.pro primary industry

Municipal Wastewater Collection (Sewer Networks) (BPALAMAA)

Keywords

• Wastewater treatment services
• Public private partnership
• Municipal water infrastructure
• DBFO concession contracts
• Biogas energy recovery

Headquarters

HQ city

Den Hoorn

HQ country

Netherlands

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain, Marketing or Sales

Revenue model

1. Public Private Partnership service fee: Service fee paid by Hoogheemraadschap van Delfland under the 30-year DBFO contract. Fee consists of fixed component (primarily financing costs) and variable component (tariff for flow rates and treated pollutant load).
2. Green gas sales: Green gas produced from biogas upgrading is supplied to gas networks (Westland Infra network), generating revenue from gas sales.
3. Effluent heat sales: Heat extracted from effluent is sold to Warmtebedrijf Eneco Delft for distribution to residential and commercial buildings near AWZI Harnaschpolder.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Delfluent Services B.V. collects and treats wastewater for nearly 1.5 million inhabitants and approximately 40,000 businesses in the Hague region through two large-scale wastewater treatment plants — AWZI Harnaschpolder in Den Hoorn (largest in the Netherlands) and AWZI Houtrust in Den Haag — plus a transport system with 19 pumping stations. Operations are delivered under a 30-year Design-Build-Finance-Operate (DBFO) public-private partnership with Hoogheemraadschap van Delfland, with supplementary revenue from green gas sales and recovered heat supply.

Differentiator

Problem solved

Functional benefit

Brands

• Delft Blue Innovations: A research facility and collaborative platform among Delfland, Evides, and Delfluent (Services) for research contributing to further improvement and sustainability of the water chain. It is located at AWZI Harnaschpolder and open to researchers working on surface water and irrigation water production.

Products and services

• Wastewater collection and treatment services (AWZI Harnaschpolder and AWZI Houtrust)
• Green gas production and supply
• Effluent heat recovery and supply
• Struvite (phosphorus) recovery

Quantifiable outcome

• 85% removal of nitrogen and phosphate compounds at Harnaschpolder
• +9 more outcomes

Named customers14 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

14 partnerships are on record, tiered core and minor.

• Hoogheemraadschap van DelflandcoreStrategic or Co-development Partner · 4 December 2003Public authority and contracting entity for the 30-year DBFO (Design Build Finance Operate) public-private partnership. Remains publicly responsible for wastewater quality while Delfluent operates the infrastructure. End client of Delfluent Services for wastewater treatment operations in the northern part of the Hoogheemraadschap region.
• Evides IndustriewatercoreStrategic or Co-development Partner · 1 January 1999Water utility company and primary shareholder (54.5%) of the Delfluent consortium. Also 100% shareholder of Delfluent Services since December 2012. Provides drinking and industrial water in Southwest Netherlands with extensive knowledge of water treatment and distribution. Supplier of water services to 2.5 million customers in Zeeland, Southwest South Holland, and Brabantse Wal.
• StruktoncoreStrategic or Co-development PartnerConstruction company with extensive experience in large and complex construction projects and PPP concession projects, both nationally and internationally. Holds 10% stake in Delfluent consortium. Also part of BAHR consortium (50%) for engineering, procurement and construction.
• BAHR ConsortiumcoreImplementation/ SI/ Consulting PartnerConsortium consisting of Veolia Water Solutions & Technologies (50%), Heijmans and Strukton (50%). Responsible for engineering, procurement, construction (EPC contract) of AWZI Harnaschpolder, renovation of AWZI Houtrust, and startup of both facilities.
• Veolia Water Solutions & TechnologiescoreImplementation/ SI/ Consulting PartnerPart of BAHR consortium (50% share) responsible for design and construction of wastewater treatment infrastructure. Original co-founder of Delfluent Services in 2003 along with Evides.
• HVCminorStrategic or Co-development PartnerSludge incineration facility in Dordrecht, jointly owned by multiple water boards and municipalities. Receives dewatered sludge from AWZI Harnaschpolder (about 8 trucks per working day) and AWZI Houtrust (about 13 trucks per week) for incineration.
• Warmtebedrijf Eneco Delft (WBED)coreStrategic or Co-development PartnerJoint venture between municipalities Delft and Midden-Delfland, Eneco, and housing corporations Vidomes, DuWo and Woonbron. Building heat station near AWZI Harnaschpolder to supply heat extracted from effluent to nearby residential area. Contractual agreements made between WBED, Hoogheemraadschap van Delfland and DSBV.
• Ro.Pa.Tec Technische ReinigingminorImplementation/ SI/ Consulting PartnerTechnical cleaning contractor that has been active for Delfluent Services for years with various cleaning and maintenance jobs. Developed the Rolapac Drijflaagverwijderaar concept in collaboration with Delfluent Services for automatic floating layer removal in reception wells.
• TU DelftcoreStrategic or Co-development PartnerAcademic partner for the Harkos granular sludge technology pilot at AWZI Harnaschpolder. Collaboration with professor Mark van Loosdrecht and PhD candidate Viktor Haaksman. Research focuses on developing conditions for granular sludge formation in continuous flow treatment.
• Royal HaskoningDHVminorStrategic or Co-development PartnerEngineering consultancy collaborating on the Harkos granular sludge technology pilot research project.
• Hoogheemraadschap RijnlandminorStrategic or Co-development PartnerWater board collaborating with Delfland, Delfluent Services, TU Delft, Evides Industriewater and Royal HaskoningDHV on the Harkos granular sludge technology pilot project.
• Delft Blue Innovations consortiumcoreStrategic or Co-development PartnerJoint research facility by waterpartners Delfland, Evides and Delfluent (Services) open to researchers working on water chain sustainability improvements. Located at AWZI Harnaschpolder, operational since October 2015. Investigates applications for purified water including freshwater buffer, irrigation water, and surface water quality improvement.
• Westland InframinorChannel Partner/ Reseller/ DistributorGas network operator receiving green gas produced at AWZI Harnaschpolder for distribution to end users. Annual production equivalent to 30 million km of sustainable transport.
• Mirabella Mulder Waste Water ManagementminorStrategic or Co-development PartnerProject lead for struvite production testing, conducting tests on separating struvite from digested sludge using a cyclone.

Scale indicators19 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Suez Water Technologies & Solutions: Global water and waste-management operator with significant municipal wastewater concessions across Europe. Comparable as a large incumbent that competes for, and operates, municipal wastewater treatment assets under long-term concessions similar in shape to Delfluent's DBFO.
• Veolia Water Technologies & Solutions: Global water-treatment technology and services provider; co-founded Delfluent Services (until 2012) and part of the BAHR EPC consortium. Comparable as a global incumbent offering wastewater treatment solutions, plant design, and operating know-how relevant to Delfluent's technology stack.
• Thames Water: UK regulated water and wastewater utility serving 15M customers. Comparable as a large regulated wastewater concession operator with similar customer base (municipal/residential/industrial), compliance obligations, and asset-heavy infrastructure model.
• Severn Trent: Listed UK water and wastewater group operating regulated concessions. Comparable as a publicly visible benchmark for the economics of regulated wastewater concessions (capex intensity, OPEX efficiency, environmental compliance, resource-recovery revenue).
• Evides Industriewater: 100% parent of Delfluent Services and 54.5% shareholder of the Delfluent consortium; supplies drinking and industrial water in Southwest Netherlands. Comparable as a Dutch water-sector incumbent with industrial-water expertise applied to Delfluent's operations.

Regional players

• Waterschap Rivierenland: Dutch regional water authority responsible for wastewater treatment in the Rivierenland region. Comparable as a regional Dutch water board / authority counterpart that could potentially tender DBFO-style concessions, making it a structural peer to HHDelfland in Delfluent's procurement context.
• Hoogheemraadschap Rijnland: Dutch regional water authority and partner in the Harkos pilot project. Comparable as a Dutch regional water board counterpart and adjacent authority whose procurement choices shape the Dutch PPS wastewater market.

Direct peers

• Aquafin: Belgian wastewater treatment company operating under a comparable public-private/regulated model, collecting and treating municipal wastewater for Flanders. Highly comparable to Delfluent in business model (regulated utility-style wastewater operator), customer type (municipalities/water authorities), and core activity (collection + treatment + sludge handling).
• Waternet: Amsterdam-area water cycle operator (drinking water, wastewater, waterways). Comparable as a Dutch integrated municipal water company, although structured as a public entity rather than a private SPC; competes in the same Dutch regulated water market.

Others

• Royal HaskoningDHV: Dutch engineering consultancy collaborating with Delfluent on the Harkos pilot. Comparable as a technology and engineering partner in the Dutch water sector; not a direct competitor but a relevant ecosystem participant given shared R&D.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Delfluent