Top 50 Greywater Recycling

Hydraloop develops a water recycling system that captures and purifies domestic wastewater for reuse in showers, gardens, and laundry, promoting water circularity in urban environments. This technology addresses the growing demand for sustainable water management solutions amid increasing water scarcity.

NetXeroc provides engineered, turn‑key solutions for industrial water and waste streams, designing and operating custom effluent recycling systems, advanced treatment plants, and solid‑waste anaerobic digestion units that convert organic waste into biogas and bio‑fertilizer. The integrated platform reduces freshwater consumption by up to 70 %, meets strict discharge regulations, and generates carbon‑credit‑eligible emissions reductions, supported by cloud‑based performance analytics and remote diagnostics.

INDRA designs and manufactures water treatment systems that utilize advanced filtration and biological treatment processes to recycle domestic and industrial wastewater. This technology significantly reduces water waste and promotes sustainable water management by effectively minimizing environmental impact.

Mimbly offers the Mimbox, a B2B solution that connects to any professional washing machine to recycle water and capture microplastics during laundry processes. This technology significantly reduces water consumption and prevents the release of microplastic fibers into waterways, addressing critical environmental challenges in commercial laundry operations.

Aquafortus utilizes a non-thermal recovery and crystallization technology platform to efficiently extract valuable resources from wastewater. This process reduces environmental impact and enhances resource recovery, addressing the challenges of waste management in various industries.

Infinity Water Solutions provides a closed-loop water management system that recycles 100% of produced water for reuse in the oil and gas industry, utilizing proprietary technology to ensure high-quality water treatment. By offering reliable water sourcing and storage across a network covering over 130,000 acres, the company helps operators reduce their dependence on freshwater resources while minimizing environmental impact.

Utilizes a recirculating shower system that captures, cleans, and reuses water in real time, reducing water and energy consumption by up to 80%. This technology provides a high-pressure, hygienic shower experience with a flow rate of 3 GPM while using only 0.5 GPM, making it suitable for residential, modular, and off-grid applications.

Drupps develops systems for recovering airborne wastewater from industrial airstreams, enabling businesses to recycle pure water and heat with high efficiency. This technology addresses water scarcity by reducing overall water consumption and improving environmental conditions through cleaner exhaust air.

Geodesic Innovations provides chemical-free water disinfection and quality improvement systems for pools, cooling towers, and wastewater reuse networks, utilizing advanced monitoring technology to ensure optimal water conditions. The company significantly reduces chemical usage and conserves billions of liters of water, addressing the critical issues of water quality and environmental sustainability.

The startup has developed catalytic hydrothermal gasification (cHTG) technology that converts biomass residues and industrial waste into renewable gas, fertilizer, and clean water. This process enhances wastewater treatment efficiency while promoting sustainable waste management and resource recovery.

CleanEdge Resources develops and integrates technologies for industrial wastewater treatment and waste-to-energy conversion, focusing on resource recovery and sustainability. Their solutions address the challenges of managing industrial waste while enhancing water recovery and generating renewable energy, contributing to a more sustainable future.

Gradiant provides integrated water‑treatment platforms for large industrial facilities, combining membrane, adsorption, oxidation and extraction technologies to reduce freshwater intake and recover metals, minerals and other resources. The systems include an AI‑driven SmartOps analytics layer and proprietary CURE chemicals that continuously optimize process setpoints, predict maintenance and ensure compliance for applications such as zero‑liquid‑discharge, PFAS destruction, lithium extraction and electrolyzer‑ready water.

The startup has developed an AI-driven recycling system that utilizes machine learning algorithms to analyze waste flow, predict equipment failures, and assess material quality. This technology enhances recycling efficiency by identifying contaminants and optimizing operations, ultimately reducing costs and improving sustainability in the recycling industry.

Viridis develops electro-oxidation technology to eliminate organic pollutants from water sources, specifically targeting toxic dyes and microplastics in textile wastewater. This approach addresses the critical issue of water pollution, ensuring access to clean and usable water for households, industries, and municipalities.

Vital Lyfe offers a compact, plug‑and‑play water purification system that combines pre‑filtration, ultrafiltration and low‑pressure reverse osmosis to produce WHO‑compliant potable water on‑site. Powered by a low‑power 12 V DC pump, the unit can run from solar panels or batteries and includes real‑time sensors that adjust flow to maintain water quality. Its IP68‑rated, modular chassis allows rapid deployment and capacity scaling from 1 L/h to 20 L/h for use by outdoor enthusiasts, humanitarian responders, and military units.

Aquacycl utilizes BioElectrochemical Treatment Technology (BETT) to efficiently treat high-strength industrial wastewater while ensuring regulatory compliance and reducing greenhouse gas emissions by up to 90%. Their system offers significant cost savings by eliminating hauling fees and lowering energy consumption, enabling businesses to focus on their core operations.

Wasted provides sustainable sanitation solutions through solar-powered restroom trailers and portable toilets that utilize eco-friendly servicing methods. The company also conducts research to recover nutrients from human waste, addressing the environmental impact of traditional waste disposal while promoting a circular sanitation economy.

Salinity Solutions has developed a patented batch reverse osmosis technology that operates with over 50% energy efficiency compared to traditional systems, achieving up to 98% water recovery while generating 80% less waste. This technology addresses the urgent need for sustainable water treatment solutions in industries facing high energy costs and increasing water scarcity.

The startup manufactures specialized mobile environmental equipment for the water and wastewater industry, including combination units, recyclers, compact city units, and jet vacuums. Their versatile tankers provide efficient solutions for various tasks, enhancing operational effectiveness in managing water resources.

ECOSTP Technologies has developed a patented Net Zero Sewage Treatment Technology that utilizes biomimicry inspired by the cow's digestive system to treat sewage in decentralized underground chambers without the need for power or chemicals. This technology effectively addresses the issue of untreated sewage disposal, having processed over 2,110 million liters while saving significant amounts of energy and resources.

This startup provides waste processing services that utilize wash plant facilities, bioremediation techniques, and custom mineral processing plants to convert complex waste streams into high-quality aggregates. By enabling the construction, demolition, mining, and marine dredging sectors to recycle materials, the company significantly reduces the volume of waste sent to landfills and supports the circular economy.

Epic Cleantec provides turnkey onsite wastewater treatment and reuse systems that enable residential and commercial developments to reduce water utility demand by up to 95%. Their technology creates a reliable local water supply, addressing the challenges of water scarcity and rising utility costs.

Rehydrate develops containerized water purification systems that utilize low-grade waste heat for efficient water recycling in industrial applications. The technology addresses the critical issue of water scarcity by enhancing access to safely managed drinking water while optimizing resource use and reducing emissions.

Gross-Wen Technologies utilizes its Revolving Algal Biofilm (RAB™) system to treat wastewater by recovering nitrogen and phosphorus while producing a valuable algae byproduct. This algae-based technology offers a sustainable solution that reduces energy consumption and eliminates the need for chemical inputs, making it a cost-effective alternative to traditional wastewater treatment methods.

Undesert utilizes SWAP purification technology to transform contaminated wastewater, including produced water from oil and gas extraction, into purified water and dry salt, achieving four times the efficiency of reverse osmosis. This process addresses the critical shortage of clean water by providing up to one billion gallons of usable water daily while simultaneously combating desertification through land rehabilitation.

GI Aqua Tech provides G.NANO technology for efficient wastewater treatment through mobile, portable, and stationary systems tailored for domestic and industrial applications. Their solutions address the need for cost-effective and sustainable wastewater management, integrating into the circular economy while minimizing operational footprints.

Guerrilla manufactures a retrofittable device that enables roadside drains to capture particulate pollution from surface water runoff, preventing untreated contaminants from entering rivers. This solution operates without membranes, electricity, or moving parts, effectively addressing the significant contribution of road runoff to urban water pollution.

LAT Water develops the LAT Unit, a patented wastewater treatment technology that operates at low temperatures and ambient pressure to recover over 95% of clean water from complex water streams. This system reduces energy consumption and operational costs while minimizing environmental pollution, addressing the challenges of traditional wastewater management.

4Earth develops modular water treatment plants utilizing advanced membrane technology and machine learning to enhance operational efficiency in harsh water conditions. The company addresses the global water scarcity crisis by providing scalable solutions for industrial, commercial, and municipal applications, ensuring safe and sustainable water management.

Circularity Water develops and implements water and waste management infrastructure for smart cities. They specialize in greywater reuse systems and waste-to-energy solutions, helping cities maximize water efficiency and convert organic waste into power.

The startup develops a sustainable water recycling system that utilizes phytoremediation and natural filtration materials to treat and recycle household greywater. This technology enables users to reduce water consumption and minimize environmental pollution, leading to cost savings and enhanced community resilience.

Renasys offers a modular, stainless-steel wire woven filtration system that removes 99% of wastewater particles larger than 5 microns, enabling municipalities to enhance their treatment capacity without costly facility expansions. This chemical-free solution addresses the issue of untreated wastewater discharge, promoting environmental sustainability and reducing operational expenses.

The startup has developed a distributed organic feedstock digester that utilizes a proprietary blend of micro-organisms and grinding technology to convert food waste into an inert material without using clean water or generating grey water. This technology addresses the issue of food waste disposal while significantly lowering clients' carbon footprints.

Waterloop Solutions GmbH provides tailored strategies and technologies for water reuse in agricultural, urban, and industrial applications, focusing on efficient treatment and recycling processes. By reducing reliance on potable water sources, the company helps clients conserve water resources and enhance operational resilience.

The startup manufactures liquid filtration devices that utilize advanced filtration technology to remove fine particles from highly suspended solid-liquid streams in a single pass. Their solutions enable industries to efficiently process source water and recycle wastewater without the need for chemicals or additional remediation.

The startup provides permeable pavement surfaces that capture and recycle stormwater, effectively reducing runoff and mitigating local flooding. Their products are suitable for applications such as tree surrounds, bike lanes, and golf cart paths, helping urban developers and municipalities meet environmental compliance standards while promoting sustainability.

Bennu.ai develops The CUBE, a smart recycling unit that automatically diverts liquids from waste, reducing contamination and increasing recycling rates. By diverting an estimated 10 tonnes of waste and saving 20 tonnes of CO2 emissions compared to traditional bins, The CUBE supports a net-zero economy.

The startup provides environmental services that enable businesses to reduce their water footprint through water reuse and sustainable resource management techniques. By implementing targeted strategies for wastewater treatment and resource optimization, clients can meet their Environmental, Social, and Governance (ESG) goals while improving operational efficiency.

rStream Recycling develops robotic systems for automating recycling and composting operations, enhancing the efficiency of waste sorting and processing. Their technology addresses the labor-intensive nature of waste management, reducing operational costs and increasing recycling rates.

The startup provides a wastewater treatment system that integrates proprietary hardware and software to efficiently filter industrial wastewater while adhering to environmental health and safety standards. This technology enables businesses to implement tailored treatment solutions for various waste types, ensuring compliance and operational efficiency.

RainGrid develops community-scale networks of intelligent rainwater retention and reuse systems, called ARGoN, to manage stormwater. These systems reduce flood risk, extend infrastructure life, and offer developers reduced approval times and smaller stormwater footprints by aggregating rainwater for reuse and groundwater recharge.

Atera Water develops eco-friendly membrane filtration technologies that provide affordable and high-quality water purification solutions for communities facing water scarcity. Their systems effectively reduce toxic wastewater and carbon emissions, contributing to sustainable water management and improved public health.

This startup manufactures customized wastewater treatment systems for wineries and dairies, enabling these businesses to reuse water effectively. Clients only pay when they are satisfied with the treatment results, ensuring compliance with their specific operational requirements.

Aquature is developing a decentralized platform that utilizes bio electrochemical techniques to convert wastewater into green chemicals and energy, significantly reducing wastewater management costs for industries. This system eliminates the need for wastewater hauling and lowers greenhouse gas emissions, enabling companies to achieve sustainability goals without upfront capital investment.

The startup develops distributed desalination technologies that convert unusable water into fresh water using zero-discharge water treatment methods. This approach enables companies and cities to achieve water neutrality by sustainably replacing natural water supplies with desalinated saltwater while minimizing environmental impact.

Rite Water Solutions provides modular water treatment units (filtration, UV, reverse osmosis) and solar‑powered irrigation pumps and cold‑storage systems designed for off‑grid village and cooperative use. An IoT platform with LoRaWAN sensors connects these assets to a cloud dashboard for real‑time monitoring, leak detection and predictive maintenance. The integrated solution lowers water loss, reduces energy expenses and enhances agricultural productivity for rural cooperatives, NGOs and utility partners.

The startup operates a wastewater heat recuperation system that captures and reuses thermal energy from wastewater in condominiums, multi-dwellings, and commercial buildings. This technology enhances energy efficiency by providing a sustainable source of hot water, resulting in lower energy costs for customers.

The startup develops a greywater recycling system that captures and treats household water from showers, sinks, and washing machines for reuse. This technology enables clients to conserve potable water and reduce energy consumption, contributing to sustainable water resource management.

This company provides cloud-based software for managing waste and recycling operations, streamlining waste transportation, disposal planning, and recycling/reuse strategies. The platform helps organizations optimize ordering processes, improve customer loyalty, and simplify reporting related to waste management.

This startup manufactures wastewater heat recuperators designed for collective housing systems that produce domestic hot water. By recovering one-third of the energy required for hot water production and integrating fifteen percent renewable energy, the technology helps customers meet regulatory thermal requirements more economically.