Lend a brain to the nature

We bring together expertise in advanced organic fertilizer
production and wastewater treatment.

The Managing Director of CS Njema receives the 1st RunnerUp Prize in Input Supply for Crops at the 18th National Agrishow. The award recognizes the excellence of our product, Eden Harvest Fertilizer.
This is the coagulation basin used in the early stages of organic waste processing. It plays a vital role in separating solids and preparing material for fertilizer conversion. An essential step in our Eden Fertilizer production process, ensuring quality and efficiency.
This image shows two cylindrical concrete structures placed on the ground, likely part of a sanitation installation. A person in workwear stands in the background, emphasizing hands-on fieldwork.
A close-up of hands gently holding a pile of rich, dark soil, symbolizing care and environmental sustainability
Our Managing Director oversees the operation of an advanced wastewater treatment system. His hands-on leadership reflects our commitment to innovation and quality control. This system supports our mission to transform waste into valuable agricultural inputs.
A CS Njema technician conducts water quality testing in the field using specialized equipment. This reflects our hands-on approach to community sanitation and environmental monitoring. We bring reliable services directly to where they’re needed — even on water.

We take ownership of what we do

At CS Njema Ltd, we are dedicated to creating a better world through innovative and sustainable solutions.

We place people above profile

We provide low impact technology in WASH, renewable energy and organic farming to achieve more at low-cost.

Collaboration fuels dynamic partnerships

We are innovative creative and open to new and flexible ways of working with a number of stakeholders.

Who we are

CS NJEMA Ltd is a community-based company established in 2019 with a specialization in the engineering of Low Impact Development Enhancements (LIDE) to tackle environmental and community challenges mainly in Wastewater by creating innovative, sustainable methods for treating wastewater,without harming the enviroment.

We Provide The Best Services

At CS Njema, we are dedicated to creating a better world through innovative and sustainable solutions.

Advanced Organic Fertilizer Production

Our flagship product, Advanced Organic Fertilizer, is designed system to enhance soil fertility, increase crop yields, and reduce the use of harmful chemicals.

Wastewater Treatment

At CS Njema, we believe in sustainability and the power of nature to clean and purify wastewater. We use intelligently designed to recycle wastewater in the Community.

Closed-Loop Systems and Sustainability

Our extensive experience and deep knowledge in these areas make us a trusted partner in delivering sustainable solutions for a better world

Drinking water treatment plant

At CS Njema, we believe in sustainability and the power of nature to clean and purify water. We use intelligently designed to recycle wastewater in the Community.

We also do Automated Municipal solid waste management system

Community Sanitation Garden

CSG is a nature based approach, intelligently designed to recycle wastewater in the Community. It is known in Rwanda since 2013, and the first prototype was piloted at the University of Lay Adventists of Kigali (UNILAK)

Eco-Friendly Wastewater Treatment

Utilizing natural processes to treat wastewater in a sustainable, non-electric, and odor-free manner, promoting clean environments for communities.

Green Spaces for Community Engagement

Transforming treated wastewater into a resource that nurtures gardens, creating beautiful, green spaces that foster community well-being and environmental stewardship.

CS NJEMA treats wastewater for communities, industries, and remote sites with a portfolio of sustainable solutions and market-leading technologies

In wastes management, Rwanda and other developing countries have been experiencing a major solid crisis due on to lack of adequate environmentally friendly, efficient and affordable watestewater treatment technologies in the community. This has consequently led to an open dumping of wastes, being wastewater or solid wastes, fact which results in high fragility and vulnerability of the environment, mainly water resources and dependents.

Our Expertise

We are the only wastewater specialist in Rwanda whose primary focus is on innovation. Because of our revolutionary techniques and longstanding heritage, we continue to grow and increase our knowledge and expertise every day.

Our Vision

Our Vision is to be model of excellence in ecological security in Africa. We care about encouraging a sustainable future for our planet.

Our Mission

To ensure ecological safety, social security and community development through use of low impact development technologies.

The cost saving water treatment solutions.

Community Sanitation Garden by CS NJEMA offers a unique, innovative solution to eco-friendly water treatment. With the industry’s lowest operational costs and longest emptying intervals, CS NJEMA is a valuable, worthwhile investment for your home or establishment.

Are you looking for professional community

sanitation service provider for your house
or office?

Why Choose Us?

Revolutionary Technology

We lead the industry with innovative, patented natural wastewater treatment methods.

Sustainable Solutions

Our processes prioritize environmental conservation without sacrificing effectiveness.

Community Impact

Our work is tailored to solve real-world problems, benefiting both local communities and the planet.

Non-Electric

We use natural processes that don't rely on electricity.

Odorless

Our innovative methods ensure that wastewater is treated without producing unpleasant smells.

100% Silent

Our systems operate quietly, minimizing noise pollution

Zero-Based Maintenance

Close to 0$ of Maintenance of efficiency operation to managing and optimize, activities.

Sustainable

eco-friendly techniques to protect the planet for future generations.

Monitoring these vital
metrics

Understanding H20 Quality

Our detailed H2O quality analysis measures and Understand H2O Quality from Ph level to chemical & biological contents to mineral content, to ensure these lakes meet the highest standards. This information helps identify potential risks and the necessary steps to protect public health.We test for pH, turbidity, conductivity, and more

Water Contamination Risks

Our H2O testing reveals both Biochemical & physical parameters of Mpanga, Cyambwe, and Nasho lakes. Parameters such as iron content, coliform bacteria, and turbidity highlight possible health hazards. Elevated levels of harmful substances, including pathogens like E. coli, underline the necessity for ongoing monitoring and remediation to maintain water safety.

Partners

Our client

Join us in our mission for
better future

At CS NJEMA Ltd, we believe that sustainability is the future.

About Us

We pride ourselves on providing high-quality, innovative, and revolutionary treatments to homes and establishments in Rwanda and around Africa.

Contact Info

Our Services

Wastewater Treatment Solutions
Low-Impact Development Enhancements (LIDE)
Non-Electric, Silent, & Odorless Systems
Community Sanitation Gardens
Sustainability Consulting