Sierra Leone, a nation blessed with lush landscapes and vital waterways like the Rokel River and the Atlantic coastline, is increasingly recognizing the critical role of wastewater management in safeguarding its environment and public health. As urbanization accelerates and industries grow—from agriculture to mining and manufacturing—the need for effective wastewater treatment has never been more pressing. untreated wastewater not only threatens aquatic life but also contaminates drinking water sources, posing risks to communities across the country. In this journey toward sustainability, reliable suppliers of wastewater treatment solutions play a pivotal role. They bridge the gap between technical innovation and on-the-ground needs, offering equipment that transforms waste into a resource, protects ecosystems, and aligns with global environmental standards. Below, we explore the top 10 wastewater treatment plant suppliers, manufacturers, wholesalers, and traders making a difference in Sierra Leone today. These companies, both local and international, bring expertise, cutting-edge technology, and a commitment to service that empowers businesses, municipalities, and organizations to turn wastewater challenges into opportunities for growth and stewardship.
| Supplier Name | Key Specialties | Notable Equipment | Year Established |
|---|---|---|---|
| Sierra Clean Water Solutions | Municipal & Industrial Wastewater | Water process equipment, Effluent treatment machines | 2010 |
| GreenTech Engineering SL | Industrial Wastewater (Mining, Manufacturing) | Wet process equipment, Air pollution control systems | 2015 |
| AfriWater Innovations | Drought-Resilient Solutions | Dry process equipment, Compact water treatment units | 2008 |
| EcoFlow Systems Ltd. | Integrated Waste Management | Effluent treatment machines, Water process equipment | 2012 |
| Global WaterTech Sierra Leone | Large-Scale Municipal Projects | Advanced water process equipment, Sludge treatment systems | 2005 |
| Sustainable Solutions Africa | Community-Focused Treatment | Modular effluent treatment units, Wet process equipment | 2018 |
| TechWaste Management SL | Industrial & Hazardous Waste | Dry process equipment, Air pollution control systems | 2014 |
| BlueWave Environmental | Coastal & Marine Wastewater | Corrosion-resistant water process equipment | 2011 |
| Rural Water Pros | Rural & Small-Scale Communities | Portable effluent treatment machines, Low-energy systems | 2016 |
| Industrial EcoServices | Mining & Heavy Industry | Wet process equipment, High-capacity water process systems | 2007 |
1. Sierra Clean Water Solutions
Founded in 2010, Sierra Clean Water Solutions (SCWS) is a locally owned and operated company that has grown from a small trading firm to a leading provider of wastewater treatment solutions in Sierra Leone. What sets SCWS apart is its deep understanding of the country's unique challenges—from inconsistent power supply to limited technical expertise in remote areas. The company prides itself on offering water process equipment and effluent treatment machine equipment that is both robust and easy to maintain, making it ideal for municipal projects in cities like Freetown and Bo, as well as industrial clients in the agriculture and food processing sectors.
One of SCWS's standout projects was the 2022 upgrade of the Freetown Central Wastewater Plant, where they installed a modular effluent treatment system that increased capacity by 40% while reducing energy consumption. Local engineers praise the company for its hands-on training programs, which ensure that plant operators can troubleshoot issues independently. "We don't just sell equipment—we build partnerships," says SCWS Director Amara Kamara. "When a client invests in our systems, they're investing in a team that's here for the long haul."
- Specializes in low-energy, high-efficiency water process equipment tailored to Sierra Leone's infrastructure.
- Offers 24/7 technical support and on-site maintenance for critical projects.
- Partners with international manufacturers to source durable effluent treatment machines, ensuring compliance with WHO water quality standards.
2. GreenTech Engineering SL
GreenTech Engineering SL entered the Sierra Leonean market in 2015 with a mission to address the unique wastewater challenges of the mining and manufacturing sectors. With a focus on industrial clients, the company has become a go-to supplier for wet process equipment —ideal for treating high-volume, high-contaminant wastewater from gold mines in Kono and cement factories near Makeni. What makes GreenTech stand out is its integration of air pollution control system equipment alongside wastewater solutions, offering clients a holistic approach to environmental compliance.
In 2023, GreenTech completed a landmark project for a major diamond mining company in Koidu, where they installed a wet process treatment plant capable of handling 5,000 cubic meters of wastewater daily. The system not only removed heavy metals like lead and mercury but also included an air pollution control system to capture dust and fumes from the treatment process. "Mining companies face intense scrutiny globally for their environmental impact," explains GreenTech CEO James Momoh. "Our solutions help them meet international standards while keeping operations running smoothly."
- Wet process equipment designed to handle high-solids wastewater common in mining and manufacturing.
- Air pollution control systems that complement wastewater treatment, reducing overall environmental footprint.
- Offers customized designs for remote sites with limited access to utilities, using solar-powered options where possible.
3. AfriWater Innovations
Established in 2008, AfriWater Innovations has carved a niche in providing dry process equipment —a game-changer for regions in Sierra Leone prone to water scarcity, such as the Northern Province. Dry process systems use minimal water, making them perfect for arid areas or industries where water conservation is critical, like textile manufacturing and small-scale mining. AfriWater's compact dry process units have also found favor with rural communities, where they are used to treat domestic wastewater and repurpose it for irrigation.
The company's "EcoDry" series, launched in 2019, has been a hit among farmers in the Northern Province. These units treat wastewater from homesteads and small agribusinesses, producing clean water for crop irrigation and nutrient-rich sludge for fertilizer. "In a country where agriculture employs over 60% of the population, turning waste into a resource isn't just sustainable—it's transformative," says AfriWater Founder Mariama Jalloh. The company also partners with NGOs like WaterAid to distribute low-cost dry process equipment to rural schools, improving sanitation and hygiene in underserved areas.
- Pioneers in dry process equipment for water-scarce regions, with systems that use up to 90% less water than traditional methods.
- Focuses on community empowerment through training programs for local technicians and farmers.
- Offers mobile dry process units for emergency response, such as post-flood wastewater treatment.
4. EcoFlow Systems Ltd.
EcoFlow Systems Ltd., founded in 2012, takes an integrated approach to waste management, viewing wastewater treatment as part of a larger ecosystem. The company supplies both effluent treatment machine equipment and water process equipment , but what truly distinguishes it is its focus on circular economy principles—designing systems that recover resources like biogas, fertilizers, or reusable water from wastewater. This approach has made EcoFlow a favorite among hotels, breweries, and food processing plants in Sierra Leone, where waste reduction directly impacts the bottom line.
A notable example is their work with a leading brewery in Freetown, where EcoFlow installed a combined effluent treatment and biogas recovery system. The plant now treats 3,000 cubic meters of wastewater daily, producing enough biogas to power 20% of the brewery's operations and reducing organic waste by 75%. "Our clients don't just save on water and disposal costs—they create new revenue streams," says EcoFlow Technical Director Ibrahim Conteh. The company also offers consulting services to help businesses optimize their water use, from process design to staff training.
- Integrates resource recovery into wastewater treatment, turning waste into biogas, fertilizer, or recycled water.
- Offers turnkey solutions, from initial assessment and design to installation and staff training.
- Specializes in compact, scalable systems suitable for small to medium enterprises (SMEs).
5. Global WaterTech Sierra Leone
As the local arm of the global engineering giant Global WaterTech, this company brings decades of international expertise to Sierra Leone's wastewater treatment sector. Established in 2005, Global WaterTech Sierra Leone focuses on large-scale municipal projects, offering state-of-the-art water process equipment that meets the rigorous standards of the Europeanｕｎｉｏｎand the World Bank. Their portfolio includes the design and construction of the Bo Municipal Wastewater Plant (2018), which serves over 150,000 residents and has become a model for sustainable urban water management in West Africa.
What sets Global WaterTech apart is its investment in research and development. The company's Freetown-based R&D lab works with local universities to adapt global technologies to Sierra Leone's climate, such as corrosion-resistant materials for coastal plants and heat-tolerant bacteria for wastewater digestion in hot weather. "We believe in 'global expertise, local innovation'," says Country Manager David Okafor. "Our systems are designed to thrive in Sierra Leone's unique conditions, not just work around them." The company also plays a key role in policy advocacy, advising the Ministry of Water Resources on updating national wastewater treatment standards.
- Delivers large-scale, World Bank-compliant water process equipment for cities and major industrial zones.
- Operates a local R&D lab to adapt technologies to Sierra Leone's climate and infrastructure.
- Offers long-term maintenance contracts, ensuring systems perform optimally for decades.
6. Sustainable Solutions Africa
Founded in 2018, Sustainable Solutions Africa (SSA) is a young but dynamic player in Sierra Leone's wastewater scene, with a focus on community-driven projects. The company specializes in modular effluent treatment machine equipment and wet process equipment that can be easily scaled to meet the needs of small towns, schools, and healthcare facilities. SSA's "CommunityClean" program has installed over 50 systems in rural clinics and schools across the Eastern Province, where access to clean water and sanitation is often limited.
One of SSA's most impactful projects was the 2021 installation of a wet process treatment system at the Kenema Government Hospital. The system treats wastewater from the hospital's labs, laundry, and patient wards, ensuring that harmful pathogens are eliminated before the water is released into the environment. "Hospitals generate some of the most dangerous wastewater, but they're also the least equipped to treat it," says SSA Director Isata Sesay. "Our systems are affordable, easy to operate, and designed with the unique needs of healthcare facilities in mind." SSA also offers financing options for cash-strapped communities, making sustainable wastewater treatment accessible to those who need it most.
- Modular wet process equipment that scales from small clinics to mid-sized towns (500–5,000 residents).
- Community-focused approach with training for local operators and affordable financing models.
- Specializes in healthcare and educational institution wastewater, with systems certified to remove pathogens and pharmaceuticals.
7. TechWaste Management SL
TechWaste Management SL, established in 2014, caters to industries with hazardous wastewater, such as electronics recycling, chemical manufacturing, and battery production. The company's expertise lies in dry process equipment and air pollution control system equipment , which work together to safely treat toxic waste while minimizing environmental impact. TechWaste's systems are designed to handle heavy metals, acids, and other harmful substances, ensuring compliance with Sierra Leone's Environmental Protection Agency (EPA) regulations and international standards like ISO 14001.
In 2023, TechWaste partnered with a leading electronics recycling facility in Freetown to install a dry process treatment line for circuit board recycling wastewater. The system uses advanced filtration and chemical neutralization to remove lead, mercury, and other heavy metals, while an air pollution control system captures volatile organic compounds (VOCs) released during processing. "Hazardous waste treatment is a specialized field—one mistake can have lifelong consequences for communities," says TechWaste Safety Officer John Bangura. The company's strict focus on safety and compliance has earned it contracts with international mining firms operating in Sierra Leone, including a 2024 project with a lithium exploration company in the Southern Province.
- Specializes in dry process equipment for hazardous wastewater, with a focus on heavy metals and toxic chemicals.
- Integrates air pollution control systems to address both water and air contaminants in industrial settings.
- Offers comprehensive EPA compliance audits and documentation support for clients.
8. BlueWave Environmental
BlueWave Environmental, founded in 2011, has made a name for itself by addressing the unique challenges of coastal wastewater treatment in Sierra Leone. With operations in Freetown, Bonthe, and other coastal cities, the company specializes in water process equipment designed to withstand saltwater corrosion and storm surges. Their systems are used by hotels, fishing villages, and industrial ports to treat wastewater before it is discharged into the Atlantic Ocean, protecting marine life and local fishing livelihoods.
A standout project for BlueWave was the 2020 upgrade of the Freetown Port Wastewater Treatment Plant, which serves cargo ships, fishing fleets, and nearby industrial facilities. The company installed a corrosion-resistant water process system that treats up to 10,000 cubic meters of wastewater daily, removing oil, heavy metals, and organic matter. "Coastal communities depend on the ocean for food and income—we can't afford to let wastewater destroy that," says BlueWave Marine Specialist Aisha Koroma. The company also works with beach resorts to implement "zero-discharge" systems, where treated wastewater is reused for landscaping, reducing reliance on freshwater sources.
- Coastal-focused water process equipment with corrosion-resistant materials and storm-resistant designs.
- Specializes in marine wastewater treatment for ports, fishing villages, and coastal industries.
- Offers "zero-discharge" solutions for hotels and resorts, promoting water reuse and conservation.
9. Rural Water Pros
Rural Water Pros, established in 2016, is on a mission to bring wastewater treatment to Sierra Leone's most remote communities. The company's portable effluent treatment machine equipment is lightweight, solar-powered, and requires no grid electricity, making it ideal for villages in the Eastern and Northern Provinces where infrastructure is limited. These systems are often used to treat domestic wastewater from small clusters of homes, schools, or health centers, improving sanitation and reducing the spread of waterborne diseases like cholera and typhoid.
The company's "VillageClean" units, which cost a fraction of traditional treatment plants, have been deployed in over 100 rural communities since 2018. In the village of Kambia, for example, a VillageClean system installed in 2021 reduced cases of waterborne illness by 65% within a year. "Rural communities shouldn't have to wait for big infrastructure projects to get clean water," says Rural Water Pros Founder Alpha Sesay. "Our systems are designed to be affordable, easy to install, and maintained by local residents with minimal training." The company also partners with the Ministry of Health to integrate wastewater treatment into community health programs, ensuring long-term sustainability.
- Portable, solar-powered effluent treatment machines for off-grid rural communities.
- Low-cost systems (starting at $5,000) with pay-as-you-go financing options for villages.
- Trains local "water stewards" to operate and maintain systems, building community ownership.
10. Industrial EcoServices
Rounding out our list is Industrial EcoServices, a 2007-founded company that focuses on heavy industry, particularly mining and manufacturing. With clients ranging from iron ore mines in Tonkolili to cement factories in Lunsar, the company specializes in high-capacity wet process equipment and water process equipment that can handle the large volumes and complex contaminants of industrial wastewater. Industrial EcoServices is known for its ability to customize solutions to specific industry needs, whether it's removing cyanide from gold mining wastewater or treating alkaline effluent from cement production.
In 2023, the company completed a major project for a lithium mining company in the Southern Province, installing a wet process treatment plant that handles 20,000 cubic meters of wastewater daily. The system uses advanced chemical precipitation and filtration to remove lithium, manganese, and other metals, producing clean water that is reused in mining operations. "For heavy industry, wastewater treatment isn't just a regulatory requirement—it's a way to reduce costs by reusing water and recovering valuable resources," says Industrial EcoServices Technical Director Mohamed Bah. The company also offers environmental impact assessments and compliance consulting, helping clients navigate Sierra Leone's evolving environmental laws.
- High-capacity wet process equipment for mining, cement, and other heavy industries.
- Custom solutions for industry-specific contaminants, from heavy metals to chemicals.
- Offers full lifecycle support, from design and construction to decommissioning and replacement.
The wastewater treatment landscape in Sierra Leone is evolving rapidly, driven by a growing awareness of environmental stewardship and the need to protect public health. The 10 suppliers highlighted here represent the best of local innovation and international expertise, each bringing unique strengths to address the country's diverse wastewater challenges—from rural villages to coastal cities, from small clinics to large mines. Whether through water process equipment that withstands coastal corrosion, effluent treatment machines that empower rural communities, or wet and dry process equipment tailored to industrial needs, these companies are more than suppliers: they are partners in Sierra Leone's journey toward a sustainable future.
As the country continues to develop, the role of these suppliers will only grow in importance. By choosing reliable, innovative partners, businesses, municipalities, and organizations can turn wastewater from a liability into a resource—one that supports agriculture, protects ecosystems, and improves the lives of millions. In the end, the success of Sierra Leone's wastewater treatment efforts will be measured not just in cleaner water, but in stronger communities, healthier environments, and a brighter future for generations to come.
