Industrial Water Solutions A/S

What Industrial Water Solutions A/S does

Industrial Water Solutions A/S (formerly RGS Nordic Water Solutions) is a privately held Danish industrial wastewater treatment operator founded in 1989, headquartered in Skælskør, Denmark. The company runs a reception and treatment facility at Stigsnæs (Slagelse Municipality) and a reception facility at Mongstad, Norway, providing biological treatment and recovery services for industrial wastewater that cannot be discharged to municipal sewer systems due to explosion hazards, health risks, or odor issues. Its customer base spans pharmaceutical, offshore oil and gas, aviation, food production, energy, and environmental services companies across Scandinavia and Europe.

The core technology is a four-stage biological and physico-chemical treatment train comprising chemical precipitation, biological treatment using activated sludge with nitrification, clarification with microfiltration, and a fourth-stage activated carbon filtration process implemented in 2016. The facility is documented at 95-99.7% pollutant removal efficiency, with claimed 99.4% PFOS removal (best-in-Denmark) and 99% mercury removal, supported by ISO 9001 and ISO 14001 certifications. A unique high-salinity biological culture enables treatment of brakvand (briny water). Annual capacity is up to 600,000 tons, with parcel delivery acceptance from 30 to 70,000 tons via sea tankers or road tankers, and the company has cumulatively treated more than 5 million tons since 1989.

The business model is usage-based treatment fees on volume and waste-fraction complexity, with direct enterprise field sales and facility-based delivery. Revenue derives from processing fees for industrial wastewater handling, residual oil recovery, and ancillary reception/storage services. The company is currently navigating material regulatory headwinds: the Danish Environmental Protection Agency cancelled its two Norwegian oily wastewater import licences in December 2023 and issued 2024 inspection enforcement on odor, surface water, and sludge-site requirements, materially affecting the offshore segment. No external investors, parent companies, or M&A activity are disclosed.

Name

Industrial Water Solutions A/S

Legal name

Industrial Water Solutions A/S

Website

https://iwsolutions.eu

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

1–10 employees

Short description

Industrial Water Solutions A/S operates the largest commercial biological industrial wastewater treatment plant in the Nordics from Stigsnæs, Denmark, with a Norwegian reception facility, serving pharmaceutical, offshore, aviation, food, and energy customers across Scandinavia and Europe on a usage-based fee model.

Ownership category

akta.pro rank

Product category

Industrial Wastewater Treatment Services

NAICS

Sewage Treatment Facilities (221320), Waste Treatment and Disposal (5622)

SIC

Sanitary Services (4950)

akta.pro primary industry

Industrial Wastewater & Effluent Treatment Services (BPALAHAD)

akta.pro secondary industries

Water Reclamation & Reuse Production (Tertiary/Advanced Treatment) (EUANADAD), Industrial Wastewater Reuse (Cooling/Process/Boiler Feed) (EUANADAM)

Keywords

• Industrial wastewater treatment
• Biological water purification
• PFOS removal services
• Industrial wastewater reception
• Residual oil recovery

Headquarters

HQ city

Skælskør

HQ country

Denmark

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D, Others

Revenue model

1. Industrial Wastewater Treatment Services: The company provides biological treatment and recovery services for industrial wastewater. They receive wastewater from various industries and charge for treatment services based on volume and complexity of waste fractions. Revenue is generated through processing fees for wastewater treatment, with capacity to handle parcel deliveries from 30 to 70,000 tons.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Industrial Water Solutions A/S provides biological treatment and recovery services for industrial wastewater at facilities in Stigsnæs (Denmark) and Mongstad (Norway). The company accepts industrial wastewater parcels from 30 to 70,000 tons via sea or road transport, then processes them through a four-stage system (chemical precipitation, biological treatment, microfiltration, and activated carbon filtration) achieving 95-99.7% purification efficiency. Customers include Scandinavian offshore, pharmaceutical, aviation, food production, energy, and environmental services industries.

Product overview

Industrial Water Solutions A/S (formerly RGS Nordic Water Solutions) operates one of the world's most advanced biological wastewater treatment plants in Stigsnæs, Denmark, with a second facility in Norway. The core offering is industrial wastewater treatment and recovery using Best Available Technology (BAT), achieving 95-99.7% purification efficiency. The integrated system combines reception and storage facilities (handling 30-70,000 ton parcels by ship or truck), biological treatment via activated sludge with nitrification, and residual oil recovery. Since 1989, the company has treated over 5,000,000 tons of wastewater with an annual capacity of up to 600,000 tons.

Differentiator

Problem solved

Functional benefit

Products and services

• Industrial Wastewater Treatment and Recovery Biological treatment and recovery of industrial wastewater using activated sludge culture with nitrification process, achieving 95-99.7% purification efficiency. The facility in Stigsnæs is one of the world's most advanced biological wastewater treatment plants, processing wastewater from industries including pharmaceutical, oil, airports, food production, and energy.
• Reception and Storage Facilities Scalable reception and storage facilities that accept parcel deliveries of industrial wastewater from 30 to 70,000 tons. Supports delivery by sea through oil and product tankers as well as road deliveries by truck. Operates a closed-loop system where waste fractions are sampled before arrival to determine optimal treatment.
• Residual Oil Recovery Extracts and recovers residual oil from oil industry wastewater for further use in society, enabling circular economy outcomes as part of the company's wastewater treatment process.

Quantifiable outcome

• Removes 95-99.7% of pollution from industrial wastewater depending on type
• +5 more outcomes

Named customers6 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

Feature3 records

Partnerships

One partnership is on record.

• Mongstad Reception Facility (Norway)coreOthersIndustrial Water Solutions operates a reception facility in Mongstad, Norway to collect oily wastewater from the Scandinavian offshore industry. The facility enables efficient collection before transport to the main treatment plant in Stigsnæs, Denmark. All imports require approval from both Norwegian and Danish authorities.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• Solenis LLC: Specialty chemicals supplier of water treatment chemistries and process solutions for industrial customers. Adjacent rather than directly competitive; relevant as an ecosystem partner for chemical precipitation stages of IWS's treatment train and as a benchmark for water-treatment technology economics.
• Ecolab Inc. Global provider of water treatment solutions and services for industrial customers, including on-site wastewater management. Adjacent player with comparable industrial customer base but focused on chemistry and digital monitoring rather than centralized biological treatment facilities.

Broad incumbents

• Ragn-Sells AB: Swedish-founded environmental services group operating across the Nordics and Baltics with industrial waste, hazardous waste, and water treatment capabilities. Comparable customer overlap (industrial and offshore) but a much broader portfolio including collection, recycling, and remediation.
• Clean Harbors Inc. North American environmental services company specializing in industrial and hazardous waste treatment, including PFAS and complex wastewater fractions. Closest large-scale analog to IWS's hazardous industrial wastewater niche and useful for technology and pricing benchmarks.
• Remondis SE & Co. KG: German family-owned water and recycling services group with significant industrial wastewater and hazardous waste operations across Europe. Comparable in treating complex industrial waste fractions and serving large industrial customers, but at much larger scale.
• Stena Recycling AB: Swedish recycling and environmental services group serving Nordic industrial customers with waste handling and treatment. Comparable Nordic industrial customer base and ESG positioning but with a broader waste management scope rather than specialist wastewater treatment.
• Veolia Environnement SA: Global water and waste management operator with industrial wastewater treatment plants across Europe. Comparable technology footprint (biological, advanced treatment) but serves a vastly broader market; relevant as a benchmark for technology and as a potential consolidator of niche specialists like IWS.
• Suez SA: International water and waste services group with industrial effluent treatment and water reuse capabilities across Europe. Comparable in service offering and customer types (industrial, municipal) but operates at much larger scale than IWS.

Direct peers

• AF Offshore Environ AS: Norwegian environmental services subsidiary of AF Gruppen handling reception and treatment of oily wastewater, drill cuttings, and slop from Norwegian offshore operations. Directly comparable business model to IWS's Mongstad reception facility and Stigsnæs treatment line.
• RGS Nordic A/S: Danish environmental services firm providing industrial waste treatment including oil-contaminated waste and slop from offshore operators. IWS was formerly branded RGS Nordic Water Solutions, making RGS Nordic the closest operational and commercial peer in the Danish industrial wastewater market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/industrialwatersolutions

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Industrial Water Solutions A/S