Waterslag
Waterslag B.V. is a Dutch environmental engineering firm that designs, builds, and operates custom on-site groundwater purification and soil remediation installations for municipalities, construction companies, and environmental contractors across the Netherlands and Belgium.
- Company typePrivate
- Founded2008
- HeadquartersAngerlo, Netherlands
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Waterslag does
Waterslag B.V. is a Dutch private limited company founded in 2008 and headquartered in Angerlo, Netherlands, specializing in on-site groundwater remediation and industrial water purification. The company designs, builds, rents, operates, and maintains custom water purification installations for contaminated sites, with a portfolio of treatment techniques including strip towers, carbon filters, sand filters, ion exchange, dissolved air flotation, multi-phase extraction (MFE), and in-situ chemical oxidation via Perozone units (WSP-300, 300g/hr ozone injection capacity). Its proprietary C.A.R.S. remote monitoring and control system enables remote operation and process management across installations. The company holds VCA contractor safety certification.
Waterslag serves a B2B customer base across the Netherlands and Belgium, with project documentation spanning six named clients: the Municipality of Doetinchem (largest PFAS soil remediation in the Netherlands), NTP, HYE NV, Willemen Infra NV, and Dura Vermeer. Customer segments include municipalities, construction companies, and environmental remediation contractors. The business model is project-based with five revenue streams: equipment rental, custom construction/design, operational management, maintenance services, and engineering services. Pricing is project-specific and not publicly disclosed, with quotes tailored to contamination types and installation specifications.
The company operates with 11-50 employees and maintains a flat organizational structure under the direction of Bedrijfsleider Martijn van Paassen. Its primary geographic markets are the Netherlands and Belgium, with no global footprint claimed. The company is independent, with no disclosed parent company, venture capital investment, or institutional ownership. Strategic positioning emphasizes the scarcity of deep on-site groundwater sanitation expertise in the Dutch market, with 18 documented projects serving as evidence of operational track record.
Waterslag firmographics
Firmographics- Name
- Waterslag
- Legal name
- Waterslag B.V.
- Website
- https://waterslag.nl
- Company type
- Private
- Founded year
- 2008
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Waterslag B.V. is a Dutch environmental engineering firm that designs, builds, and operates custom on-site groundwater purification and soil remediation installations for municipalities, construction companies, and environmental contractors across the Netherlands and Belgium.
- Ownership category
- akta.pro rank
Waterslag industry classification
Industry- Product category
- Water Treatment & Environmental Remediation Services
- NAICS
- Remediation Services (562910), Remediation and Other Waste Management Services (5629)
- SIC
- Water, Sewer, Pipeline, Comm & Power Line Construction (1623)
- akta.pro primary industry
- PFAS Investigation & Remediation (BPALAKAJ)
- akta.pro secondary industries
- PFAS & Emerging Contaminants Treatment Services (IMAIAGAJ), Groundwater Extraction, Treatment & Discharge (Pump-and-Treat, reinjection) (BPALAKAF), Chlorinated Solvent & VOC Groundwater Remediation (e.g., PCE/TCE) (BPALAKAC), Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems) (IMAHAEAJ)
Keywords
Where Waterslag is headquartered
LocationHeadquarters
- HQ city
- Angerlo
- HQ country
- Netherlands
- HQ region
- Europe
Offices1 record
Markets served
Waterslag business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Equipment Rental: Waterslag offers rental of water purification installations for temporary or project-based needs. The company provides customized rental solutions rather than standard rental offerings.
- Construction and Design (Sale): Custom design and construction of water purification systems tailored to specific client needs and contamination challenges.
- Operational Management: Ongoing operational management services for water purification installations, including remote monitoring, process management, and process control using data registration systems.
- Maintenance Services: Preventive and corrective maintenance services for pump and purification installations, including scheduling, optimization, checklist management, and spare parts replacement.
- Engineering Services: Technical engineering support including process/installation design, 3D design and visualization, flow diagrams, pilot projects, budgets, tender advice, CE documentation, ATEX studies, and technical construction files.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Waterslag product offering
Product offeringCore offering
Waterslag designs, builds, rents, and operates custom water purification installations for on-site groundwater remediation and industrial wastewater treatment. Its portfolio targets contamination challenges involving PFAS/PFOA, heavy metals, volatile organic compounds, aromatics, oils, and pesticides, combining proprietary multi-phase extraction, Perozone oxidation, dissolved air flotation, and filtration technologies with the proprietary C.A.R.S. remote monitoring system. The company delivers turnkey solutions for municipalities, construction companies, and environmental contractors across the Netherlands and Belgium.
Product overview
Waterslag offers a comprehensive portfolio of water purification products, systems, and services centered on groundwater remediation and industrial wastewater treatment. The core offering consists of specialized treatment units (MFE Units for multi-phase extraction, Perozone Units for in-situ soil oxidation, Plaatbeluchter Units for volatile compound removal, and Mobiele Polymeer Units for sludge dewatering) complemented by standardized treatment techniques (Striptorens, Koolfilters, Zandfilters, Ionenwisseling, Flotatie). These products are supported by engineering, rental, construction, operational management, and maintenance services. Waterslag's approach emphasizes custom solutions with proprietary C.A.R.S. remote monitoring/control system across installations, targeting remediation of PFAS/PFOA, volatile organic compounds, heavy metals, and other industrial contaminants.
Differentiator
Problem solved
Functional benefit
Products and services
- Rental of water purification installations (Verhuur) Rental of water purification installations tailored to temporary or project-based needs, providing complete outsourcing with remote software support. Offered to municipalities, construction companies, and environmental contractors.
- Construction and Design of water purification systems (Bouw en Ontwerp) Custom design and construction of water purification systems tailored to specific contamination challenges and client requirements. Delivered as a one-time sale or build project.
- Operational Management (Operationeel Beheer) Ongoing operational management of water purification installations, including remote installation management, process management, process control, and documentation using data registration systems.
- Maintenance Services (Onderhoud) Preventive and corrective maintenance services for pump and purification installations, including scheduling and executing maintenance, optimizing existing installations, and replacing defective parts.
- Engineering Technical engineering services including process and installation design, 3D design and visualization, flow diagrams, pilot studies, budgets, tender advice, CE documentation, ATEX studies, and technical construction files.
Quantifiable outcome
- 4250 cubic meters of contaminated soil removed and disposed at Brabant Wal site
- +1 more outcomes
Companies that use Waterslag
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles3 records
Waterslag technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Waterslag partnerships and signals
Strategic signalScale indicators3 records
Recent moves6 records
Expansion highlights5 records
Waterslag competitors and assessment
Company assessmentBroad incumbents
- Sweco: Nordic engineering consultancy with a substantial Netherlands operation (post-Grontmij integration) covering environmental remediation, water treatment engineering, and PFAS services. Competes for many of the same municipal and contractor-led engagements.
- Royal HaskoningDHV: Dutch engineering consultancy with a water and environment division delivering remediation, water treatment engineering, and industrial effluents services. Overlaps with Waterslag on engineering design and project execution while operating at materially larger scale.
- Arcadis: Global design and consultancy with a large Dutch environmental remediation practice that bids on PFAS, brownfield, and groundwater projects for the same municipal clients. Broader portfolio but overlapping solutions, especially on large tenders where Waterslag currently lands flagship work.
- Witteveen+Bos: Independent Dutch engineering firm with deep water/environment practice including soil remediation, water purification design, and industrial water solutions for the same public-sector buyer base as Waterslag.
- Veolia Water Technologies: Global supplier of water treatment plants, mobile units, and process technologies (incl. PFAS, DAF, ion exchange) with a Benelux presence. Comparable on the equipment-and-engineering side of Waterslag's business, competing with their mobile treatment units on industrial tenders.
Regional players
- Heijmans: Dutch construction and infrastructure group with an environmental services line that delivers site remediation, dewatering, and ground/surface water treatment on its own civil projects. Adjacent customer base (NTP, Willemen Infra, Dura Vermeer) that Waterslag also serves as a specialist subcontractor.
- Strabag Umwelttechnik: European construction group's environmental engineering arm performing soil/groundwater remediation and construction-site water treatment, including PFAS projects in DACH/Benelux. Comparable on site-based pump-and-treat and in-situ remediation services for large infrastructure clients.
Direct peers
- Tauw Group: Dutch environmental engineering and consulting firm with a comparable portfolio in PFAS site investigation, soil and groundwater remediation, and industrial water treatment across the Netherlands. Similar size band and direct customer overlap with municipalities and developers.
- Antea Group: Dutch-headquartered environmental and infrastructure consultancy providing site investigation, remediation design, and industrial water services to municipalities and contractors in NW Europe — directly competitive with Waterslag's groundwater sanitation offering.
- Mourik: Dutch industrial services and environmental contractor operating mobile water treatment, tank cleaning, and on-site remediation services. Comparable service model of owned mobile units deployed to contaminated sites on a project/rental basis.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks6 records
Key highlights7 records
Customer concentration
Waterslag social profiles
Digital presenceWaterslag compliance and trust
Trust signalCompliance1 record
Waterslag financial estimates
Financial estimateRevenue estimate
Valuation estimate
Waterslag leadership team
Management profileNumber of profiles
Profiles1 record
Waterslag funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Waterslag M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Waterslag
What does Waterslag do?
Waterslag designs, builds, rents, and operates custom water purification installations for on-site groundwater remediation and industrial wastewater treatment. Its portfolio targets contamination challenges involving PFAS/PFOA, heavy metals, volatile organic compounds, aromatics, oils, and pesticides, combining proprietary multi-phase extraction, Perozone oxidation, dissolved air flotation, and filtration technologies with the proprietary C.A.R.S. remote monitoring system. The company delivers turnkey solutions for municipalities, construction companies, and environmental contractors across the Netherlands and Belgium.
Is Waterslag a public or private company?
Waterslag is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Waterslag founded?
Waterslag was founded in 2008. It employs 11 to 50 people.
Where is Waterslag based?
Waterslag is headquartered in Angerlo, Netherlands, in the Europe region.
How does Waterslag make money?
Five revenue lines are on record. Equipment Rental is the primary driver. The others are construction and Design (Sale), operational Management, maintenance Services and engineering Services.
Who are Waterslag's main competitors?
Broad incumbents on record are Sweco, Royal HaskoningDHV, Arcadis, Witteveen+Bos and Veolia Water Technologies. Regional players are Heijmans and Strabag Umwelttechnik. Direct peers are Tauw Group, Antea Group and Mourik.
Does Waterslag have an API?
No public API is recorded for Waterslag.
What industry is Waterslag in?
Waterslag's product category is Water Treatment & Environmental Remediation Services. Its primary akta.pro industry code is BPALAKAJ, PFAS Investigation & Remediation, with a secondary code of IMAIAGAJ, PFAS & Emerging Contaminants Treatment Services. Its NAICS code is 562910 and its SIC code is 1623.