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Top wastewater treatment companies in the world

Water is a very necessary part of every individual’s life. Due to pollution and harsh effects of industries the preserved water on earth is decreasing day by day. In most African countries, substantial quantities of wastewater from many commercial establishments like laundries, hotels and hospitals, freely mix with sewage. That’s where wastewater treatment companies come in. The following are some of the top wastewater treatment companies in the world.

Bio Sewage Systems

Bio Sewage Systems offer innovative waste water treatment solutions that help you to save water and do your part towards saving the planet. Bio Sewage Systems design, manufacture and commission innovative modular and/or mobile Wastewater Treatment systems for domestic, commercial or industrial application in Southern Africa and Internationally.

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Their multi-stage systems are designed to breakdown waste water using mechanisms inspired by nature, and by using a series of anaerobic, anoxic and aerobic reactors, their systems deliver effective and economical sewage treatment.

Ion Exchange Safic

Safic is an Accéntuate Ltd Company, and a supplier of chemicals, equipment, consumables, water technology and many specialised product solutions within all major market segments throughout Southern Africa. Manufacturers of chemicals since 1981, Safic is the first chemical company in South Africa to be certified as an ISO 9001, ISO 14001 and OHSAS 18001 organisation.

Partnerships in Africa

The Accéntuate Group supplies products to many countries within Sub-Saharan Africa including but not limited to: Angola; Botswana, Namibia, Zambia, Mozambique, Kenya, Tanzania, Uganda, Nigeria, Ghana, Zimbabwe and Swaziland.

ION Exchange Safic provides the industry with total water management – pre-treatment, process water/liquid treatment, waste water treatment, water recycling, and recovery of valuable by-products for re-use.

ION Exchange Safic’s total solution approach addresses environmental concerns of customers by incorporating water conservation, pollution control, and energy saving and reduced chemical consumption.


Westech is meeting a global need for clean water through technology treatment solutions. We are proud that the equipment and systems we design, build, maintain, and operate are making the world a better place and creating a more sustainable environment for future generations.

WesTech Engineering, Inc. provides process solutions for water and wastewater treatment, liquids/solids separation, and biological treatment needs in municipal, industrial, and minerals markets worldwide. Founded in 1973, Westech is an employee-owned company with over 500 employees around the world who deeply value the trust the customers place in the company when they choose WesTech.

WesTech is headquartered in Salt Lake City, Utah (USA), with other offices across the country and the world.

Also Read: Challenges and solutions in the water and wastewater treatment industry in Africa


Since over 30 years, Paques helps industries to reduce water and carbon footprints and reclaim valuable resources. Paques’ anaerobic water purification systems produce energy (biogas) from wastewater, whilst purifying the water and facilitating water reuse.

After the introduction of the first BIOPAQ® reactor in 1981 Paques developed a broad portfolio for integrated water and gas treatment in close cooperation with partners. All the solutions proved to be cost-effective and highly reliable.

Leading companies from a variety of industries worldwide selected Paques as their partner for meeting their purification and sustainability obligations. Paques accomplished long-term relationships with customers by working together in the development of solutions and delivery of high-quality installations.

Veolia Water Technologies

Veolia Water Solutions & Technologies (“Veolia”) is a total solutions water and wastewater treatment company supplying complete turnkey plants for municipal, food and beverage, power, chemical, mining and pharmaceutical industries.  Areas of expertise include biological, co generation, desalination, evaporation, crystallization, drying, filtration, gas cleaning as well as other related technologies.

Veolia has the capability to execute large projects with proven track records in Southern Africa and Africa as a whole. It is the only company in South Africa to offer a full range of activities, from turnkey contracting for small and large projects to specialised services and speciality chemicals for the industrial and municipal markets.

Veolia specialises in the design, construction, commissioning and operation of water and wastewater treatment plants and offers a full range of various types of operational contracts, including technical assistance.

Idro Group

Established in 2015, IDRO Group combines companies with over forty years of experience in their sectors which operate with the latest technologies and with full respect for the environment.

The companies making up IDRO Group began operating independently in Italy, and experienced constant growth also thanks to the acquisition of renowned companies in the environmental sector, which carried them into international territory. These companies have developed a close and productive collaboration with facilitates financial, commercial, logistical and organizational synergies based on a common strategy focused on quality, specialization, product innovation and strong customer focus.

The company provides efficient and innovative solutions for the treatment of: Water, Air, Energy and Waste. In Africa some our products that can be accessed include Compact and mobile water plants units which are suitable for waste water and reuse for gardening or flush water and potable water as well. We see the African wastewater treatment market as a huge market though with some funding issues.


CIE, with 35 years’ ​experience, is proud to be one of the European leader companies in design, development, manufacture and installation of water and wastewater plants, specifically dedicated to metal finishing industry.

CIE operates worldwide providing unmatched efficiency, reliability and knowledge, thanks to its team of skilled experts. With a background knowledge and experience in chemical composition of typical working baths, CIE offers different solutions specifically designed for metal finishing lines.

Toro Equipment

Toro Equipment is a leading European company specialized in the design and manufacture of equipment for industrial and urban wastewater treatment, water processing, water reuse and sludge treatment.

The company offers customers the best water treatment solutions, based on more than 25 years’ experience in the design and manufacture of equipment, as well as commissioning. It also offers custom solutions for both the private and public sectors, and have supplied equipment to more than 70 countries worldwide, with international markets accounting for more than 80% of our sales.

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Dennis Ayemba
Dennis Ayemba
Country/ Features Editor, Kenya


  1. Dear Sir
    please note aeration equioment are essential for wwtp design and ww processing (from pre-treatment up to water re-use)
    High perfomance equipment such as Helixor and Jet-Helix designed, built, manufactured and supplied by PE – Process Engineering
    Biogas Diffuser for anaerobic digestion also available
    This equipment appliead for aeration, oxygenation, sludge digestion and bio-gas all round the world and constituting a proven waste water treatment technology operating since 1975


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