Interwaste

What Interwaste does

Interwaste is a South African integrated waste management company headquartered in Germiston, Gauteng, operating as a subsidiary of the French environmental services group Séché Environnement. Founded in 1989 and listed on the JSE AltX, the company runs a multi-facility platform — including the Germiston Hub, Klinkerstene Waste Park (Delmas), and the Maluti Waste Treatment and Recovery Facility — covering bioremediation, effluent treatment (43M+ litres/year capacity with 80-90% water recovery), licensed waste treatment, engineered landfill, and waste-derived fuel production. It holds South Africa's first Refuse Derived Fuel (RDF) plant and a proprietary blending platform for alternative liquid fuels, alongside anaerobic digestion and waste-to-energy capabilities.

The company serves enterprise clients across oil & gas, mining, petrochemicals, chemical, pharmaceutical, automotive, and FMCG sectors, with named customers including Freys Food Brands, Cipla Medpro Manufacturing, Sika SA, Clover KZN CDC, Douglas Pharmaceuticals, and Avery Dennison. Revenue is generated through managed-services contracts (integrated waste collection, hazardous and liquid waste handling, treatment and disposal) complemented by transaction-based streams from waste-derived fuel sales and circular-economy programmes such as AD Circular. Go-to-market is direct enterprise field sales with quote-based, bespoke pricing, supported by a customer portal and province-specific contact infrastructure across South Africa.

In 2025, Interwaste announced a partnership with Nurox Hydrothermal to deploy hydrothermal processing technology for hazardous waste (including PFAS and cytotoxic pharmaceuticals) in New Zealand and globally, with the first plant scheduled for 2026 commissioning and a planned equipment-as-a-service/licensing go-to-market. This marks its first material international expansion beyond Southern Africa, complementing existing ESG initiatives such as the Give2Green programme and ongoing EPR-aligned partnerships.

Name

Interwaste

Legal name

Interwaste Holdings Pty Ltd

Website

https://interwaste.co.za

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Interwaste is a South African integrated waste management company and Séché Environnement subsidiary operating multi-facility waste treatment, bioremediation, effluent, and waste-to-energy services for enterprise industrial clients across Southern Africa, expanding internationally via Nurox hydrothermal processing.

Ownership category

akta.pro rank

Headquarters

HQ city

Mangere

HQ country

New Zealand

HQ region

Oceania

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Integrated Waste Management Services: Full-service waste management from point of generation to destination, handling general waste, hazardous waste, liquid waste, and specialized waste streams for industrial clients.
2. Waste Treatment and Disposal: Licensed waste treatment facilities including stabilization, contaminant immobilization, and landfill disposal services.
3. Effluent Treatment Services: Treatment of industrial effluent and leachate with water recovery capabilities, recovering 80-90% as clean reusable water.
4. Waste Derived Fuel Production: Production and sale of alternative fuels (RDF and liquid fuels) from waste streams for co-combustion applications.
5. Circular Economy Solutions: Specialized recycling programs such as the AD Circular glassine liner recycling partnership, diverting specific waste streams from landfill.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels10 records

Core offering

Interwaste provides integrated waste management services from point of generation to destination, handling general waste, hazardous waste, liquid waste, and specialized waste streams for industrial clients. The company operates licensed treatment facilities including an Effluent Treatment Plant (recovering 80-90% of water), Bioremediation Facility, Waste Derived Fuel Facility, and engineered Landfill, along with waste-to-energy technologies (Refuse Derived Fuels, Anaerobic Digestion, Blending Platform) supporting circular economy solutions across Southern Africa.

Product overview

Interwaste is an integrated waste management company operating as a multi-facility platform offering end-to-end waste solutions. The portfolio comprises six distinct facilities and processing technologies: the Bioremediation Facility (natural microbial windrow treatment), Effluent Treatment Plant (recovering 80-90% of liquid waste as reusable water), Waste Treatment Facility (stabilisation and neutralisation), engineered Landfill Facility (with pre-treatment capabilities), Waste Derived Fuel Facility (converting high-CV wastes into thermal substitute fuel), and Maluti Waste Treatment and Recovery Facility (hazardous waste handling). These are complemented by the Blending Platform (alternative liquid fuel production), Refuse Derived Fuels (RDF) technology, and Anaerobic Digestion services. The company also operates community initiatives including the Give2Green recycling programme and Avery Dennison AD Circular partnership. Interwaste serves the oil & gas, mining, FMCG, chemical, pharmaceutical, industrial, logistics, and paper and packaging sectors across Southern Africa.

Differentiator

Problem solved

Functional benefit

Brands

• Give2Green: Initiative allowing consumers and companies to donate sanitary pads or wheelchairs to those in need, evolved from the Tops & Tags programme

Products and services

• Refuse Derived Fuels (RDF) South Africa's first waste-to-energy technology that converts solid, dry, non-reusable or recyclable waste into alternative fuel for use alone or with co-combustors such as coal, reducing non-recyclable waste to landfill and conventional fuel consumption. Targets industrial clients in cement manufacturing and energy sectors.
• Blending Platform A platform developed in Johannesburg by Interwaste's R&D team that produces alternative liquid fuels from hazardous waste streams such as hydrocarbon sludges, oils and greases for co-combustion with traditional fuels. Serves industrial clients requiring hazardous waste solutions.
• Anaerobic Digestion A waste-to-energy platform that creates natural gas through naturally occurring bacterial processes, supplying organic waste to anaerobic digesters to produce methane-rich combustible gas for electricity generation, reducing landfill waste and greenhouse gas emissions.
• Bioremediation Facility A sustainable waste treatment facility at Klinkerstene Waste Park using natural microbial windrow processes to remediate organic contaminants including hydraulic oils, diesel, VOCs, sVOCs, and PAHs. Serves industrial clients with hydrocarbon and organic contamination.
• Effluent Treatment Plant (ETP) An engineered facility designed to accept and treat various effluent waste streams including leachate and industrial liquid waste, recovering 80-90% as clean, reusable water through pre-treatment, primary treatment, secondary biological treatment, and tertiary polishing. Capacity to process over 43 million litres annually.
• Waste Treatment Facility A licensed waste treatment facility at Klinkerstene Waste Park for waste stabilisation prior to landfill disposal, handling contaminant immobilisation, liquid and sludge waste stabilisation, and pH modification including acid and alkaline waste neutralisation.
• Landfill Facility An engineered landfill facility at Klinkerstene Waste Park for responsible disposal of diverse waste types, including Type 0-1 waste for pre-treatment and disposal, and Type 2-4 waste for direct disposal, with targeted contaminant immobilisation through pre-treatment.
• Waste Derived Fuel Facility A facility at the Germiston Hub that transforms high calorific value wastes into thermal substitute fuel (WDF), a sustainable alternative to fossil fuels such as coal, supporting decarbonisation of cement manufacturers and other industries.
• Maluti Waste Treatment and Recovery Facility A licensed hazardous waste treatment and recovery facility in Germiston equipped with technologies for treating hydrocarbon-contaminated waste, wash bay residues, empty chemical containers, redundant products, acid and alkaline waste neutralisation, used oil filter recovery, and industrial effluent.

Quantifiable outcome

• 26.7+ million litres of water conserved since 2024
• +5 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Nurox HydrothermalcoreStrategic or Co-development Partner · 26 August 2025Partnership to deploy Nurox's proprietary hydrothermal processing technology for hazardous waste management in New Zealand and globally. The technology uses only heat, water, and air to break down substances like PFAS, cytotoxic pharmaceuticals, and industrial residues into clean water, inert materials, and commercially valuable acetic acid. First processing plant scheduled for commissioning in New Zealand in 2026. Companies planning international scaling via equipment-as-a-service and technology licensing models. Backed by approval from the medical sector including Douglas Pharmaceuticals.
• Séché EnvironnementcoreStrategic or Co-development PartnerSéché Environnement is the parent company and one of France's leading players in the recovery and treatment of all types of waste. It is the leading independent operator in France, uniquely positioned as a specialist in highly complex waste operating within regulated waste recovery and treatment markets with high barriers to entry. Interwaste is part of the Séché Group.
• Avery DennisoncoreStrategic or Co-development PartnerPartnership through AD Circular programme for glassine liner (backing paper) recycling in South Africa. Over the last two years, successfully redirected approximately 100 tons of glassine liner waste from landfill. The programme supports Extended Producer Responsibility compliance and enables businesses to strengthen sustainability goals while contributing to circular economy.
• Transport Education Training Authority (TETA)minorStrategic or Co-development PartnerPartnership for Adult Education and Training (AET) Programme launched May 2025. TETA provided funding support for the programme which equips employed and unemployed participants with foundational literacy and numeracy skills. Integrates Recognition of Prior Learning (RPL) for personalized development interventions.
• Douglas PharmaceuticalsminorOthersMedical sector company providing approval backing for the Nurox hydrothermal processing technology partnership. Represents the medical/pharmaceutical sector validation for the hazardous waste processing solution.
• Give2Green Community PartnersminorOthersCommunity partnership initiative enabling donation of sanitary pads or wheelchairs through recycling collection. Evolution of the Tops & Tags programme which donated over 1,000 wheelchairs and diverted 400+ tons of waste from landfill since 2011.

Scale indicators14 records

Recent moves4 records

Expansion highlights5 records

Regional players

• Averda: Middle East and Africa-focused waste management company providing collection, treatment, recycling, and disposal services across emerging markets. Comparable as a regional integrated waste player with circular-economy and enterprise customer focus, though primarily outside Southern Africa.

Broad incumbents

• Remondis: German-headquartered global waste and recycling services group with hazardous waste, water, and circular economy operations in Africa and globally. Comparable for its integrated waste management model and regulated-market expertise similar to Interwaste's positioning.
• Republic Services: Major US-based environmental services company providing solid waste, recycling, and hazardous/industrial waste handling. Comparable for its integrated service platform and enterprise customer base across regulated and non-hazardous waste streams.
• SUEZ Recycling and Recovery: Global waste and water services company with hazardous waste treatment and circular economy offerings in Africa. Comparable as a deep-pocketed incumbent serving overlapping industrial customer segments with regulated waste expertise.
• Séché Environnement: French parent company and leading independent operator in regulated waste recovery and treatment in France. Comparable as the parent group sharing hazardous waste, industrial effluent, and waste-to-energy capabilities across its European and Southern African operations.
• Waste Management Inc. Largest North American integrated waste management company with landfill, recycling, and waste-to-energy operations. Comparable for the integrated landfill-to-recovery operating model and regulated waste expertise, though it operates in a different geography.
• Veolia Africa: Global environmental services major with hazardous waste, water, and circular economy operations across Southern Africa. Comparable as a multinational peer competing for the same enterprise and municipal customers with broader balance sheet and technology stack.

Direct peers

• Clean Harbors: North American leader in hazardous waste management, industrial cleaning, and environmental services with a similar enterprise-focused model. Comparable for its hazardous waste treatment, disposal, and emergency response focus serving oil & gas, chemical, and manufacturing customers.
• Stericycle: US-listed regulated waste management company focused on medical, hazardous, and compliance-driven waste services. Comparable for its specialized regulated-waste model serving enterprise and healthcare customers analogous to Interwaste's hazardous and pharmaceutical clients.
• EnviroServ Waste Management: Direct South African competitor offering integrated waste management, hazardous waste treatment, and landfill operations across multiple sites in South Africa. Comparable as the closest head-to-head operator in the same geography with overlapping service lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks1 record

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCY-cwa2qzFebOvJMUX2B0BA
• Facebookfacebook.com/interwaste
• LinkedInlinkedin.com/company/interwaste-africa

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Interwaste