The future of sustainable affordable housing in Kenya.

On 11th October 2022 President Ruto inspected the Kings Serenity Affordable Housing Programme project in Ongata Rongai. The Kings Serenity housing project is part of the Boma Yangu initiative whose main agenda is to provide affordable housing to Kenyans. The project aims to provide 15,000 affordable housing units.

The Kings Serenity project is part of former President Uhuru Kenyatta’s affordable housing programme under the Big Four agenda.

As well as the project in Ongata Rongai the programme also aims to build housing units in Mukuru kwa Reuben as well as other areas in the country.


With so many housing units being constructed there will be a huge strain on the existing infrastructure, including wastewater sewage management and water provision. CESP Africa has provided a wastewater management system to aid that strain.

We are in the process of installing a complete wastewater treatment plant that will be complete and operational before 2023, before residents move into the housing units. The treatment plant will not only treat the wastewater produced in the project but will also recycle water that can be used for watering plants and cleaning the environs.

The system is an important part of keeping the overall housing project affordable as it reduces the need for provision of water by other water providers.

The future.

As the Kings Serenity project comes to a close, we hope to be future partners in the provision of affordable housing in Kenya. Not only recycling wastewater but also providing treated water for future housing projects.

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Britam Towers

Britam Tower has been described by many as magnificent, iconic and even a flagship for Vision 2030- Kenya’s economic blueprint. The 32- story edifice has a total height of 200 meters, sits on a 1.5 acre piece of land along Hospital Road in Upper Hill and is the third tallest building in Africa. The Britam Tower boasts a prismic shape which has been achieved by having a base with four corners and a roof with two corners. This prismatic 3D geometry allows all floors to differ in shape and size thus catering for a variety of different tenancy requirements.

One of the most incredible features is the building’s magnificent, specially engineered façade. It is made up of special high-performance glass which conforms to certain design requirements with regards to heat and light transmission, as well as impact resistance.

Question is: where would one begin in the cleaning of such windows to ensure that their integrity is upheld? Well this has been made possible by the windows’ self-cleaning mechanism as well as the quality of water used to do the actual cleaning.

Britam contracted CESP Africa for the provision of state-of-the-art water treatment systems for purification of all their water. The water used to clean the glass is passed through a Reverse Osmosis System that purifies at a rate of 0.3 liters per second. The purification process removes any sediments and chemicals in the water that may cause damage to the glass of the building’s façade during cleaning.

A second Reverse Osmosis System operating at a rate of 0.4 liters per second was installed together with an ultra-violet system to purify all the water from the borehole before it is distributed throughout the building’s consumption points. This means that water flowing through each and every tap at the Britam Tower is safe for drinking!

CESP Africa also installed a 50 cubic meter per day waste water system that treats all the grey-water that is produced throughout the entire building before release into the sewer line.  This ensures that hazardous waste water is in no way released to the environment from the Towers.

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The Hub Mall

The Karen Hub is a mixed use complex set on 20 acres in the heart of Karen that opened its gates on February 4th 2016. It is 200 meters along the Dagoretti Road, from the Karen roundabout. The Hub comprises of stylish buildings and open-sided walkways, with a centerpiece of a large square or piazza. It boasts a man-made lake overlooked by restaurants; and there is parking space for 1,200 cars. It houses shops dealing in fashion, furniture, fitness, and various eateries, with Carrefour – the huge and prestigious French supermarket – as its anchor client.

CESP Africa was sub-contracted by Laxmanbhai Construction Limited- the main contractor of the Karen Hub project – to supply and install a waste water system. A 50,000 GPD JET Waste Water Treatment System was installed by CESP Africa at the Karen Hub and it took only 15 months for the system to be up and running. This system treats both the grey and black water that is produced during the day to day activities at the mall. The treated water is then reused for outdoor purposes within the malls environs.

A SCADA monitoring system was also installed at The Karen Hub by CESP so as to gather and analyze data collected from the Waste Water Treatment System and provide the System Operators with timely reports of its performance, thus enabling faster and more efficient control and monitoring of the installed Treatment System.

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Two Rivers Mall

Two Rivers Mall, the largest shopping mall in east and central Africa. Located between the Northern Bypass and Limuru Road and sits on a whopping 1.7 million square feet/39 acres, thus providing over 700,000 square feet of leasable space.

Two Rivers Mall is owned by Two Rivers Lifestyle Company Ltd which is a coalition of several firms including, Centum Group, the majority shareholder; Aviation Industry Corporation of China (Avic) and ICDC a state-owned firm.

The mall consists of medium density residential homes, office blocks, a shopping center, as well as a vast range of restaurants one of which is the City Lodge’s three-star 170 key hotel. Some other renowned tenants include Carrefour, the French retailer, which operates more than 12,000 outlets globally, and is the mall’s anchor tenant; the Turkish luxury fashion line LC Waikiki, Woolworths, Hugo Boss and Nike.

Right from the start of construction and overall development of the mall, the owners knew that they wanted the project to be compliant with international green standards. With this in mind, CESP Africa was subcontracted by Athena Properties Ltd –the property managers- to provide a wholesome and eco-friendly Wastewater Treatment solution.

CESP proposed a Moving Bed Biofilm Reactor (MBBR) Aerobic Wastewater Treatment System. These terms may seem complex and daunting, however what the system basically does is treat the collected waste water using bacteria, whose purpose is to feed on this waste. These bacteria are provided with oxygen in order for survival as well as to operate at optimal levels, thus the system is referred to as an aerobic wastewater treatment system. The MBBR technology employs polyethylene biofilm carriers which provide a protected and increased surface area to support the growth of these bacteria. It is this high-density population of bacteria that achieves high-rate biodegradation within the system, while also offering process reliability and ease of operation. At the end of this whole treatment process Two Rivers mall was to obtain colorless, odorless and environmentally-friendly effluent.

This was to be a one-of-a-kind system for CESP Africa as it would be one of the largest Wastewater Treatment Projects installed in Africa. CESP took up the challenge and with their long-time business partners JET Inc. embarked on the installation of what was to be a gargantuan system. Jet Inc. is an American firm and is the respected world leader in wastewater treatment technology. Since 1955, the firm has provided products that have been developed with the industry’s longest service life and lowest repair rates and CESP Africa is the authorized distributor of the Jet Inc. products in Sub-Saharan Africa.

CESP conducted multiple site visits, attended a good number of meetings with the different shareholders and fellow sub-contractors as well as designed and redesigned the layout and structure of the system together with the dedicated engineers at JET Inc. with painstaking attention to detail so as to ensure that not a single item was left out.

Installation of the 1,135 m3 / 300,000 GPD (Gallons per Day) or 1,135,624 liters per day Wastewater Treatment System then began with the CESP workmen and engineers working tirelessly to ensure the timely completion of the project. Besides, the wastewater treatment system, CESP also installed a Supervisory Control and Data Acquisition (SCADA) system. This SCADA system allows for remote monitoring, data logging as well as diagnosis of the installed wastewater treatment system hence providing CESP a timely, safer and overall, more efficient project maintenance procedure.

The mall has since been opened with a ribbon cutting ceremony that was held on the 14th of February 2017 and was graced by the Kenyan President Hon. Uhuru Kenyatta. It is approximated that 120,105 people visited the mall that day and CESP is proud to say that their Wastewater Treatment System was able to handle all the waste generated on that peak day and effectively continues to do so a couple of months down the line.

The Two Rivers Management puts this effluent (treated wastewater) to good use such as irrigating their expansive grounds as well as a reserve in the case of fire-fighting and any excess effluent is discharged into River Gichiie. All of this released effluent is in line with the requirements by the local environment regulator (NEMA) for discharge and reuse.

Through this partnership with CESP Africa, Two Rivers development is able to reuse 80% of all the water now and in the future creating a cyclic environment for the entire ecosystem. Additionally, it has created a sustainable shopping, living & working experience for all at the Two Rivers.

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