Loowatt
Developer of waterless, container-based sanitation systems that collect waste for treatment and potential resource recovery.
Last updated August 25, 2026
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Overview
Loowatt is a United Kingdom-based sanitation technology company focused on waterless toilet systems. Its model is based on container-based sanitation: instead of flushing human waste through a conventional sewer network, a Loowatt toilet captures waste in a removable container. The filled container can then be collected and transported for treatment, allowing sanitation services to operate in places where piped sewerage, reliable water supplies, or conventional wastewater infrastructure are unavailable or too expensive. The company’s approach connects toilet design with the wider sanitation service chain. A toilet is treated not only as a fixture but as part of a managed system covering containment, collection, transport, processing, and possible reuse. According to descriptions of the company’s technology, collected waste may be directed to anaerobic digestion, a biological process that can produce biogas and a residual material usable as fertilizer or soil improver. This resource-recovery dimension distinguishes Loowatt’s proposition from a purely disposable or containment-only toilet solution. Loowatt’s work has included development and field testing of its waterless sanitation model outside the United Kingdom. In 2012, the company began a trial project in Antananarivo, Madagascar. The project provided an opportunity to test the practical operation of container-based sanitation in an urban environment and to examine how collection and treatment services could be organized around waterless toilets. In July 2013, Loowatt received a grant of US$1,269,936 from the Bill & Melinda Gates Foundation to design and build a commodity-generating waterless toilet system. The grant reflected the company’s emphasis on turning sanitation outputs into useful commodities, particularly through treatment pathways capable of generating energy and agricultural inputs. It also placed Loowatt within the broader development and sanitation-innovation field, where organizations have sought alternatives to sewer-connected toilets for rapidly growing or infrastructure-constrained communities. Loowatt is therefore positioned as a sustainable sanitation solutions provider rather than a conventional bathroom-fixtures brand. Its principal offering is the Loowatt toilet and the associated service and treatment model. Publicly available reference material provides limited information about the company’s current corporate ownership, leadership, commercial scale, and geographic footprint, so those details are left unspecified here.
History
Loowatt developed around the idea that sanitation can be delivered without connecting every toilet to a conventional water and sewer network. Its technology uses a waterless toilet linked to a removable container. Once the container is filled, it can be taken away for processing rather than being flushed into a sewer. This arrangement is an example of container-based sanitation, in which the service provider manages the movement of waste from the point of containment to treatment and, where possible, reuse. The model addresses several limitations of conventional sanitation infrastructure. Flush toilets require a continuing supply of water and a functioning network of pipes, pumping, treatment, and sludge management. Those requirements can be difficult to meet in informal settlements, dense urban areas, remote communities, and places where water is scarce. A container-based system can be deployed with less dependence on fixed sewer connections, although it requires dependable collection logistics and suitable treatment facilities. Loowatt’s stated technological direction has included anaerobic digestion and resource recovery. Waste collected from its toilets can be sent to an anaerobic digester, where microorganisms break down organic material in an oxygen-free environment. This process can produce biogas, which may be used as an energy source, as well as a nutrient-rich residual product that can support fertilizer or soil-improvement applications. The concept consequently treats human waste as a potential input for energy and agricultural production rather than solely as a disposal problem. A significant early field activity began in 2012, when Loowatt started a trial project in Antananarivo, Madagascar. The trial was important because it moved the company’s concept beyond laboratory or product development work into an urban operating context. It also involved the practical questions that determine whether container-based sanitation can function as a service: toilet deployment, container handling, collection frequency, transport, hygiene, and downstream treatment. In July 2013, the company received a US$1,269,936 grant from the Bill & Melinda Gates Foundation. The funding supported the design and construction of a commodity-generating waterless toilet system. The grant’s objective aligned with Loowatt’s resource-recovery approach, seeking a system in which sanitation could produce commercially or socially useful outputs rather than requiring waste to be treated only as a cost. The award also connected Loowatt with a wider international effort to develop non-sewered sanitation technologies for communities underserved by conventional infrastructure. Public reference material identifies Loowatt primarily through its waterless toilet technology, container-based sanitation model, Madagascar trial, and Gates Foundation-supported development work. It does not provide enough reliable information to establish a detailed chronology of incorporation, founder history, ownership changes, current executives, commercial revenues, or present-day market operations. Accordingly, the company’s documented history is best characterized as an innovation-led sanitation development story centered on waterless containment, managed waste collection, and resource recovery.
- 2013
Gates Foundation development grant
[1]In July 2013, Loowatt received a US$1,269,936 grant from the Bill & Melinda Gates Foundation to design and build a commodity-generating waterless toilet system.
- 2012
Antananarivo trial begins
[1]Loowatt started a trial project in Antananarivo, Madagascar, testing its waterless, container-based sanitation approach in an urban setting.
Products and positioning
Sustainable, waterless sanitation and resource-recovery solutions for settings without dependable conventional sewer infrastructure.
Waterless toilet
Loowatt toilet
Loowatt’s core toilet system is designed to operate without flushing water. Waste is captured in a removable container that can be periodically collected and taken to a treatment facility. The system forms part of a wider container-based sanitation service rather than functioning only as a standalone bathroom fixture. Its intended applications include locations where sewer connections, water availability, or conventional wastewater infrastructure are limited.
Resource-recovery sanitation system · 2013
Commodity-generating waterless toilet system
This development concept, supported by a 2013 Bill & Melinda Gates Foundation grant, combines waterless waste containment with treatment pathways designed to recover useful outputs. Collected waste may be processed through anaerobic digestion to produce biogas and a residual material with fertilizer potential. The system reflects Loowatt’s effort to connect toilet design with collection, treatment, energy generation, and agricultural resource recovery.
Marketing campaigns
- 2012Antananarivo waterless sanitation trial
Madagascar
Loowatt initiated a field trial in Antananarivo to test its container-based waterless toilet model and the associated waste collection and treatment service.
Outcome. The available reference identifies the trial but does not provide a detailed assessment of its results or long-term continuation.
Brand decisions
2013
Develop a commodity-generating waterless toilet systemStrategyBackground
Loowatt pursued a sanitation model intended to reduce dependence on water and sewer networks while enabling useful outputs to be recovered from collected waste.
Action taken
The company used a July 2013 Bill & Melinda Gates Foundation grant to design and build a waterless toilet system linked to commodity generation.
Aftermath
The available source does not document the system’s commercial launch, financial performance, or subsequent deployment at scale.
Grant amount. US$1,269,936 (July 2013)
Recent events
- 2013
Bill & Melinda Gates Foundation awards Loowatt a sanitation technology grant[1]
Other · Product launch
In July 2013, Loowatt received a US$1,269,936 grant to design and build a waterless toilet system intended to generate useful commodities from sanitation waste.
- 2012
Loowatt begins a waterless sanitation trial in Antananarivo[1]
Other
Loowatt started a trial project in Antananarivo, Madagascar, to test its container-based waterless toilet and associated collection model.
Sources2 sources
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