Top 10 Wastewater recycling startups

Updated: April 22, 2024

Wastewater recycling startups are developing biological sewage treatment processes, innovative membrane filtration systems and efficient nutrient removal methods, to effectively and sustainably treat sewage and wastewater, removing pollutants and contaminants, and producing treated water that can be safely discharged or reused for various purposes, contributing to improved water quality, environmental protection, and public health.
1
Country: USA | Funding: $392.4M
Gradiant is a solutions provider and developer of cleantech water projects for advanced water and wastewater treatment.
2
Country: Canada | Funding: $146.7M
Ostara’s proprietary Pearl technology recovers nutrients from industrial, agricultural, and municipal water treatment streams, transforming them into granular fertilizers that improve crop yields and reduce runoff. We are transforming the commodity market value chain and closing the loop on phosphorus for future generations.
3
Country: Canada | Funding: $86.7M
Anaergia maximizes resource recovery from virtually any waste stream, transforming waste into renewable energy, clean water, high-quality fertilizer, and recyclables. Anaergia provides complete, integrated solutions for municipal solid waste management, resource recovery in wastewater sector, and large‐scale farming & food production waste management.
4
Country: Sweden | Funding: $69.9M
ORBITAL SYSTEMS is a Swedish clean-tech company that develops a water recycling technology to be used in domestic appliances.
5
Country: USA | Funding: $40.4M
ZwitterCo provides revolutionary membrane solutions for the treatment of highly-impaired wastewater.
6
Country: Israel | Funding: $32.3M
Homebiogas develops bio-toilet which can convert human waste into cooking fuel sans the need to access sewers or water grids.
7
Country: USA | Funding: $27.9M
Membrion is a manufacturer of ultra-low cost, high performance ion exchange membranes.
8
Country: Canada | Funding: $26.4M
Axine Water Technologies is a developer of wastewater treatment technologies and solutions.
9
Country: France | Funding: €23.2M
TOOPI Organics collects and transforms human urine into fertiliser products
10
Country: USA | Funding: $20.5M
Aclarity is a VC-backed cleantech startup developing and selling water treatment systems to clean the world's water and wastewater.
11
Country: USA | Funding: $13.4M
Epic CleanTec is decentralizing wastewater treatment and reuse into individual buildings or groups of buildings.
12
Country: USA | Funding: $275K
IX Power Clean Water is an innovative provider of cleantech solutions designed to treat and clean industrial wastewater so that freshwater resources can be preserved for families, crops, and communities.
13
Country: USA | Funding: $8.5M
Aquagga cleans wastewater with less energy and develops innovative tech to create a positive societal impact in the developed and developing world.
14
Country: USA | Funding: $7.4M
Glanris makes a sustainable, low cost hybrid filtration media that removes organics as well as metals from water. Its Biocarbon is made from the largest agricultural waste, rice husks, allowing for global expansion of our carbon-negative technology to reduce greenhouse gasses and sequester carbon at gigaton scale.
15
Country: Australia | Funding: $6.6M
Nexus eWater is a home water recycling platform that develops solutions converting grey water for home water and energy use.
16
Country: Singapore | Funding: $6.3M
Hydropleap provides advanced environmental-friendly technological water treatment solutions.
17
Country: Israel | Funding: $6M
TaKaDu is a water network management company offering water utilities to improve network efficiency and planning decisions.
18
Country: Germany | Funding: €5M
Membion provides wastewater treatment with membrane bioreactor technology.
19
Country: Netherlands | Funding: €4M
Hydraloop develops home water-recycling system. It allows to use the recycled water from the shower, bath and washing machine for toilet flushing, the garden and washing machine.
20
Country: India | Funding: $4M
Mumbai startup INDRA Water treats wastewater and industrial effluents from textiles, chemicals, and pharma industries.
21
Country: USA | Funding: $3.5M
Pluto is taking advantage of the sensorification of modern water treatment plants to extrapolate insights that can save operators precious time, money and water.
22
Country: Canada | Funding: $3M
Swirltex builds custom water treatment systems for a wide range of applications. Swirltex unique patent membrane works by separating and filtering liquids according to their buoyancy, which allows for greater production with less pollution of the water. The ability to manipulate the buoyancy of different contaminants within the liquid stream allows the Swirltex system to treat water that would be considered unusable.
23
Country: USA | Funding: $2.1M
Aqua Membranes is an environmental company that provides a differentiated solution in membrane element construction.
24
Country: USA | Funding: $1.7M
Developer of a sustainable, scalable system for treating and recycling household greywater using plants and natural materials.
25
Country: UK | Funding: £1.4M
Salinity Solutions develops a technology to clean up water treatment industries.
26
Country: Switzerland | Funding: $1.5M
VunaNexus offers proprietary technology for recycling human and cattle urine to create a safe, effective, and certified fertilizer.
27
Country: UK | Funding: £517.4K
Dynamic Flow Technologies design and manufacture the WasteWater Meter which incorporates simple design with advanced technology to create a truly unique product.
28
Country: Canada | Funding: $350K
Livestock Water Recycling is an environmental company focused on livestock manure management.
29
Country: India | Funding: ₹10M
SLII develops Water Purifier that is very affordable, wastes no water, requires no external energy or pumps and works for all water sources emitting zero carbon emissions.
30
Country: USA | Funding: $20K
Gen3Bio has proprietary technology that redirects waste algae from an environmental hazard into profitable environmentally friendly products fully integrated into the circular economy. This is accomplished by using a proprietary efficient low-cost enzymolysis process to extract fats, sugars and proteins to produce specialty chemicals.
31
Country: Switzerland | Funding: $20K
Neustark is a concrete producer in bern using wastewater treatment plant by turning CO2 into minerals.
32
Country: France
FGRWS intends to recycle 80% of the domestic grey waters.
33
Country: India
SmarterHomes creats IoT water meter, WaterOn, that measures the number of units used by each apartment. It provides real-time information about the apartments' water meters, individual consumption, trends, and billing status.
34
Country: Israel
AgRobics is a renewable energy company that develops advanced anaerobic technology for treating heterogeneous wastewater.
35
Country: UK
Elentec has developed a robust range of water treatment systems and equipment based on its electrocoagulation technology, ElentecEC (patent pending), which will offer water treatment using sustainable energy with reduced waste.
36
Country: Pakistan
SE Drop develops wastewater treatment plant technology that can make your wastewater reusable.
37
Country: USA
Pancopia is developing a system to reduce ammonia levels in swine wastewater used as a biogas feedstock to levels that do not adversely affect swine productivity, and eliminates off-site nuisance ammonia odors.
38
Country: Switzerland
UNIWASTEC is a technology company that operates in the field of waste-to-energy production, namely Grade 5 green hydrogen directly from wastewater, synthetic gas from municipal or industrial solid waste, and synthetic catalytic fuels from biomass.
39
Country: Croatia
Croteh is engaged in designing, engineering and developing technologies for processing, recovering biodegradable materials and waste.
40
Country: Germany
Seraplant offers recycled phosphorus-based fertilizers to promote sustainable agriculture. The startup’s process involves mixing sewage sludge ash to make it reactive to chemical bonding, before spraying, granulating, and fractionating the waste. Moreover, the process does not produce dangerous intermediate products and toxic exhaust gases. The fertilizer also contains significantly lower proportions of uranium and cadmium, making it ideal for agriculture.
41
Country: USA
Florida startup recycles AC water for cannabis growers and homeowners
42
Country: El Salvador
Expanding uses solar energy for Eco-Friendly water desalination. The company’s solutions spread over the treatment of seawater, groundwater, and impaired salty waters, leaving no liquid byproducts. Besides, WaterFX creates a platform for desalinated water trade and analytics.
43
Country: Japan
WOTA is developing small-scale decentralized water recycling systems and autonomous control system for water treatment.
44
Country: India
Economical wastewater recycling solution for residential facilities. Safely reuse up to 60% fresh water using our patented greywater recycling solution.