Best Water and Wastewater Management Tech Companies in United Kingdom
The 120 best Water and Wastewater Management Tech companies in United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Energy Assets.
Water and Wastewater Management Tech in the United Kingdom is a sector that's easier to underestimate than to ignore right now. Our directory tracks 120 companies with $1.2B in total disclosed funding, ranked by equity raised and recent momentum. No unicorns yet, but the distribution is telling: Fido leads at $28M, Puraffinity sits close behind at $26M, and the rest of the top tier clusters tightly between $5M and $9M. That gap between the two frontrunners and the pack is where the real story lives.
The demand case isn't complicated. Rapid urbanization, intensifying water scarcity, and the modernization of urban drainage are pushing capital toward solutions that actually work at scale, and the market's ~5.8% CAGR reflects that steady, structural pressure rather than hype. Investors like Imagine H2O and EIC Fund keep showing up across deal tables here, which tells you the thesis is consistent even if the cheques aren't massive. I'd watch Evove at $9M closely. So, what does it mean that 120 companies are competing with an average disclosed raise well under $15M? It means this market still has a lot of building left to do, and you're probably looking at it earlier than most.
- openpr.com
Ranked: Best Water and Wastewater Management Tech companies in United Kingdom
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Energy Assets Provider of AI and web-based smart metering systems 50Innovation top 23%Funding top 31%Product top 33%Growth top 45% All 10 signals ▾Innovationtop 23% Fundingtop 31% Producttop 33% Growthtop 45% AItop 45% Talentbottom 49% Newsbottom 48% Techbottom 41% Globalbottom 39% Marketbottom 24% Innovation: 6 product lines · Deep-tech classification: Tech Hardware Funding: Raised $944M across 1 rounds · 1 rounds over 5 yrs (0.2/yr) rank vs industry peers · Fliar Intelligence Index 50/100 | $944M | 55 mo ago | 6 | Dave Taylor CEO | WordPressPleskApple iCloud Mail+18 | — | 4 job openings · 1 partnership |
| 2 | Hydrofinity Manufacturer of the commercial laundry machines | $39M | 63 mo ago | 47 | — | — | — | — |
| 3 | i2O Water Software solution for utility water network monitoring | $32M | 138 mo ago | 23 | Stephen Brooke | — | — | — |
| 4 | FIDO Provider of AI-driven solutions for water leak detection and management | $28M | 20 mo ago | 25 | Victoria Edwards CEO and Founder | WordPressPleskMySQL+28 | — | 1 partnership |
| 5 | Puraffinity Provider of water treatment solution 55Funding top 27%Talent top 28%Patents top 32%Moat top 32% All 8 signals ▾Fundingtop 27% Talenttop 28% Patentstop 32% Moattop 32% Innovationtop 33% Globalbottom 42% Marketbottom 35% Newsbottom 18% Funding: Raised $25.8M across 11 rounds · 11 rounds over 9 yrs (1.2/yr) Talent: 3 named leaders on record · 3 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 55/100 | $26M | 21 mo ago | 16 16 → 40 (+150%) | Despoina Paschou ex-Co-Founder | — | 30 patents Functionalized sorbent materials for contaminant removal in water treatment processes | — |
| 6 | Inflowmatix Solutions to optimize water supply network | $18M | 81 mo ago | 13 | Ivan Stoianov Founder | — | — | — |
| 7 | Rezatec Geospatial Satellite imagery and geospatial data analytics for water monitoring | $17M | 74 mo ago | 46 46 → 24 (-48%) | Patrick Newton CEO | WordPressMySQLPHP+27 | — | — |
| 8 | Syrinix Provider of water network monitoring hardware and software solution | $16M | 75 mo ago | 21 | — | — | 27 patents Pipeline integrity monitoring and pressure anomaly detection for pumped fluid transport systems | — |
| 9 | Blue Ocean Seismic Services Provider of robotic solution to study seismic activities on the ocean floor | $13M | 68 mo ago | 7 | — | — | 17 patents Autonomous marine seismic data acquisition systems for offshore exploration | — |
| 10 | LAT Water Sustainable wastewater treatment and desalination solutions | $13M | 61 mo ago | 24 | Mark Hardiman CEO | — | — | — |
| 11 | Evove Developer of advanced membrane technology for separation and filtration applications 53Innovation top 28%Patents top 28%Growth top 35%Talent top 38% All 9 signals ▾Innovationtop 28% Patentstop 28% Growthtop 35% Talenttop 38% Fundingtop 41% Moattop 45% Techbottom 49% Globalbottom 40% Marketbottom 30% Innovation: 42 patents (top 45% of patent-holders) · 42 filings since 2022 vs 0 in 2017-21 Patents: 42 patents matched (strict assignee match) · 42 filings since 2022 vs 0 in 2017-21 rank vs industry peers · Fliar Intelligence Index 53/100 | $9M | 13 mo ago | 24 24 → 32 (+33%) | Craig Clement Co-Founder & CFO | WordPressMySQLPHP+26 | 42 patents Membrane filtration hardware and monovalent ion separation technologies | 1 award |
| 12 | Seloxium Provider of materials and services for metal recovery from industrial waste | $8M | 15 mo ago | 7 | Christian Peters Co-Founder & CEO | WordPressMySQLPHP+9 | 4 patents Selective metal ion removal from aqueous streams using advanced hydrometallurgical processes | — |
| 13 | Xeros Technology Group Provider of patented technologies that aim to reduce environmental impact by minimizing textile waste and… | $7M | 79 mo ago | 41 | Syed Ali Co-Founder & CEO | WordPressApple iCloud MailMicrosoft 365+28 | — | — |
| 14 | WET Provider of water-enhancing solutions | $6M | 29 mo ago | 10 | Michael Adams Founder & Managing Director | — | — | — |
| 15 | Watercycle Technologies Provider of technology for filtration and production of valuable minerals and clean water | $6M | 18 mo ago | 10 | — | Cart FunctionalitySquarespace CommerceSquarespace+14 | — | 1 job opening · 1 partnership |
| 16 | Typhon Treatment Systems Provider of developing LED UV disinfection system for water treatment | $6M | 83 mo ago | 12 | — | — | — | — |
| 17 | Hero Labs IoT solution for detecting, preventing, and stopping water leaks in home and businesses | $5M | 55 mo ago | 4 | — | — | — | — |
| 18 | Online Oceans Developer of autonomous ocean drones for real-time data collection services 19Talent top 38%Funding top 42%Tech bottom 38%Global bottom 33% All 5 signals ▾Talenttop 38% Fundingtop 42% Techbottom 38% Globalbottom 33% Marketbottom 25% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Funding: Raised $5.4M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 19/100 | $5M | 1 mo ago | — | Alistair Douglas Co-Founder & CTO | LeafletMapbox.jsMapbox GL JS+13 | — | — |
| 19 | Previsico Provider of flood forecasting and monitoring platform for risk mitigation 35Funding top 39%Tech top 42%Innovation top 48%Growth top 48% All 9 signals ▾Fundingtop 39% Techtop 42% Innovationtop 48% Growthtop 48% Productbottom 45% Talentbottom 40% Globalbottom 39% Newsbottom 36% Marketbottom 26% Funding: Raised $5.1M across 4 rounds · 4 rounds over 7 yrs (0.6/yr) Tech: 20 technologies across 4/8 capability areas · Cloud: Amazon Ses, Amazon Web Services rank vs industry peers · Fliar Intelligence Index 35/100 | $5M | 8 mo ago | 15 | Jonathan Jackson CEO | PrismicNode.jsRadix UI+17 | — | 1 partnership · 1 award |
| 20 | NVP Energy Wastewater treatment project developer | $5M | 44 mo ago | 9 | Alan Phelan Co-Founder & Director | — | — | — |
| 21 | Watergate Provider of AI-based water consumption monitoring platform 35Tech top 34%AI top 45%Talent bottom 49%Funding bottom 46% All 7 signals ▾Techtop 34% AItop 45% Talentbottom 49% Fundingbottom 46% Productbottom 40% Globalbottom 30% Marketbottom 29% Tech: 36 technologies across 5/8 capability areas · Cloud: Amazon S3, Amazon Web Services AI: Product described with: ai-based rank vs industry peers · Fliar Intelligence Index 35/100 | $5M | 10 mo ago | — | Krystian Zajac Founder & CEO | WordPress Block EditorCart FunctionalityWooCommerce+33 | — | 1 job opening · 1 award |
| 22 | Tapp Water Manufacturer of filtration systems for faucets, showers, pitchers, and bottles | $5M | 69 mo ago | 3 | Magnus Jern Head of Product Strategy & Co-founder | Cart FunctionalityShopifyBootstrap+33 | — | — |
| 23 | 8power Provider of wireless sensors for remote condition monitoring of equipment | $4M | 66 mo ago | 12 | Ashwin Seshia Co-Founder | — | 18 patents Patents concentrated in electrical & electronics | — |
| 24 | PuriFire Labs Technology for generating hydrogen from wastewater treatment | $4M | 21 mo ago | 2 | Neel Shah Co-Founder & CEO | — | 10 patents Patents concentrated in chemistry & materials | — |
| 25 | Intellitect Water Sensor probes for water quality monitoring | $3M | 197 mo ago | 14 14 → 15 (+7%) | John Howell Founder & Owner | — | 50 patents Real-time water distribution monitoring and anomaly detection using sensor data analytics | — |
| 26 | Storm Harvester Provider of AI-powered solutions for wastewater network monitoring and optimisation 40Tech top 40%Talent top 41%AI top 45%Growth top 48% All 9 signals ▾Techtop 40% Talenttop 41% AItop 45% Growthtop 48% Moattop 48% Fundingtop 49% Globalbottom 39% Marketbottom 25% Newsbottom 25% Tech: 38 technologies across 4/8 capability areas · Cloud: Cloudflare Talent: Analyst team rating 4/5 · 1 named leader on record rank vs industry peers · Fliar Intelligence Index 40/100 | $2M | 16 mo ago | 8 | Brian Moloney Co-Founder | WordPressApple iCloud MailGoogle Workspace+33 | — | 3 awards |
| 27 | Bactest Developer of microbial monitoring system in water | $2M | 118 mo ago | 14 | Derek Price Co-Founder & CTO | — | — | — |
| 28 | TCarta Provider of geospatial products and Earth observation analytics services | $2M | 14 mo ago | 24 | David Critchley CEO | WordPress Block EditorWordPressMySQL+30 | — | — |
| 29 | ANB Sensors Provider of pH sensors | $2M | 41 mo ago | 12 12 → 11 (-8%) | Nathan Lawrence CEO ANB Sensors | PHPYouTubeOpenSSL+4 | 60 patents Electrochemical pH sensing and reference electrode technologies for analytical instrumentation | 1 launch |
| 30 | ACTIVEWATER TECHNOLOGY Provider of solar-powered water and soil treatment solutions for agriculture | $2M | 35 mo ago | 6 | Zac Gazit CEO & MD | — | — | — |
| 31 | PlanetCare Offers microfiber filters for washing machines | $2M | 67 mo ago | 9 | Miha Vrhovec Chief Product Officer and co-founder | PageFlyCart FunctionalityShopify+41 | — | — |
| 32 | Molymem Provider of waste water management and drink processing application services | $2M | 36 mo ago | 9 | Mark Bissett Co-Founder & CSO | — | — | — |
| 33 | Acoustic Sensing Provider of a cloud-based sewer and rail network lines monitoring system | $1M | 129 mo ago | 2 | Nick Hawkins Co-Founder | — | 5 patents Airborne acoustic inspection systems for pipe integrity monitoring | — |
| 34 | InferSens Provider of AI-integrated IoT sensors for water flow monitoring | $1M | 49 mo ago | 11 | — | Cart FunctionalitySquarespace CommerceSquarespace+12 | 2 patents Machine learning algorithms for sensor data acquisition and interpretation. | — |
| 35 | Cleaner Seas Group Online platform offering microfiber filters for washing machines | $799K | 45 mo ago | 10 | Dave Miller Co-Founder & CEO | Cart FunctionalityWooCommerceWordPress+24 | — | — |
| 36 | Caption Data Cloud-based remote monitoring solution for industries | $631K | 91 mo ago | 14 | — | — | — | — |
| 37 | Cascade Water Products Water consumption reduction solution | $590K | 6 mo ago | 2 | Carolyn Hogg Founder & CEO | — | — | — |
| 38 | Elentec Electrochemical based technology solutions provider for water treatment | $512K | 61 mo ago | — | John Bostock Founder & Managing Director | — | — | — |
| 39 | Nanogentech Provider of ultra-fine bubble technology for water oxygenation and other applications | $416K | 66 mo ago | 5 | Douglas Denham St Pinnock Founder | — | — | — |
| 40 | Soil Moisture Sense Provider of water management solutions for agriculture | $367K | 124 mo ago | — | Peter White Founder & Owner | ZURB FoundationAmazon ALBApache HTTP Server+6 | — | — |
| 41 | HydroHammer Developer of zero-carbon water pumps using hydram technology | $289K | 28 mo ago | — | Alexander Rowan Co-Founder | — | 7 patents Hydraulic ram pump technology with composite materials and electronic control systems | — |
| 42 | Odyssey Labs Sensors for measuring salinity in aquaculture facilities | $257K | 105 mo ago | 7 | — | — | — | — |
| 43 | CreevX Provider of solutions for water management and monitoring | $193K | 23 mo ago | 4 | Francis Haughey CEO | — | — | — |
| 44 | Plantwork Systems Provider of wastewater treatment solutions for commercial and municipal sectors | $135K | 100 mo ago | — | Robert White Founder & Managing Director | — | — | — |
| 45 | Lylo Products Developer of a product that reuses shower water for laundry | $108K | 36 mo ago | — | Paramveer Bhachu Co-Founder | — | — | — |
Top 12 Water and Wastewater Management Tech companies in United Kingdom
#1
Series A · Southampton, England · founded 2023$5.4Mraised▾
Developer of autonomous ocean drones for real-time data collection services. The drones are designed for deployment in open water environments. They provide continuous data via satellite connectivity. The drones can be launched from shore or boat. The company offers options to buy, borrow, or commission data collection. The drones support environmental monitoring, offshore wind development, and contour following.
- Apr 2026Series A$5.4M
#2
Series A · Loughborough, Scotland · founded 2018 · 15 employees$5.1Mraised▾
Provider of flood forecasting and monitoring platform for risk mitigation. The platform enables preparation for, action upon, and prevention of flood impacts. It offers actionable flood warnings to mitigate flood risk impacts. The platform forecasts surface water, smaller streams and rivers, and drainage systems. It serves various sectors, including insurance, utilities, and construction.
- Oct 2025Series A—
- Aug 2025Seed—
- Mar 2025Seed—
- Oct 2023Seed—
#3
Series A · Daresbury, England · founded 2015 · 24 employees$9.3Mraised▾
Developer of advanced membrane technology for separation and filtration applications. It provides membrane products that address limitations of conventional membrane architectures. The company's technology supports markets including lithium, green hydrogen, desalination, food and beverage, and water and wastewater. It integrates materials, manufacturing, engineering, digitalisation, and AI to reduce the cost and environmental impact of filtration and separation.
- May 2025Series A$2.3M
- Mar 2024Series A$6.3M
- Feb 2023Series A$6.9M
- Oct 2022Seed$957.1K
#4
Seed · London, England · founded 2023$5.1Mraised▾
Provider of AI-based water consumption monitoring platform. It offers an AI-integrated device and application for reducing and controlling the usage of water in buildings. It is compatible with mobile and computer devices.
- Aug 2025Seed$2.7M
- Apr 2024Seed$2.4M
#5
Series A · London, England · founded 2015 · 16 employees$25.8Mraised▾
Provider of water treatment solution. It provides adsorbents to remove pollutants from contaminated water and wastewater. It provides solutions to specifically remove PFAS from water. The technology allows for the synthesis of high-capacity advanced materials. It offers Puratech, a customisable plug-in solution that can be fit into any existing water treatment system saving time and costs.
- Sep 2024Series A$8.8M
- Sep 2023Grant (prize money)$872.3K
- Sep 2023Series A$13.9M
- Apr 2022Grant (prize money)$2M
#6
Series B · Bicester, England · founded 2014 · 25 employees$27.8Mraised▾
Provider of AI-driven solutions for water leak detection and management. It offers tools for non-revenue water reduction and leak investigation. The company’s technology extracts insights from water data to validate results and prioritize events. It helps stakeholders collaborate on water goals, delivering environmental and economic outcomes.
- Oct 2024Series B$20.7M
- Oct 2022Series A$7.1M
- Feb 2022Seed—
- Mar 2020Seed—
#7
Seed · Arbroath, Angus · founded 2015 · 2 employees$590Kraised▾
Water consumption reduction solution. It develops smart meters that uses micro-greywater reuse technology for reduction of water consumption. It aims to address the threat to global economic, societal, and environmental stability caused by water scarcity.
- Dec 2025Angel$466.4K
- Nov 2018Grant (prize money)$56.9K
- Jun 2018Grant (prize money)$66.7K
#8
Seed · Kidlington, England · founded 2022 · 7 employees$7.8Mraised▾
Provider of materials and services for metal recovery from industrial waste. It offers solutions for the selective recovery of valuable metals from industrial waste streams. Its technology helps purify metals from effluents that would otherwise be discharged. The offerings help reduce carbon emissions, energy consumption, and water contamination.
- Mar 2025Seed$7.8M
- Oct 2022Seed—
#9
Funding Raised · Bristol, England · founded 2008 · 24 employees$2.1Mraised▾
Provider of geospatial products and Earth observation analytics services. Its product portfolio has multiple monitoring and analytics solutions including a global GIS bathymetry package, It is a marine base map, vector shoreline, satellite-derived bathymetry solution, global GIS bathymetry solution, topographic bathymetry solution, satellite-based water quality monitoring, vegetation monitoring, and air quality modeling.
- Apr 2025Grant (prize money)$175K
- Feb 2025Grant (prize money)$175K
- Aug 2024Grant (prize money)$175K
- May 2022Grant (prize money)$100K
#10
Series A · Manchester, England · founded 2020 · 10 employees$6.3Mraised▾
Provider of technology for filtration and production of valuable minerals and clean water
- Nov 2024Grant (prize money)—
- Nov 2024Series A$5.6M
- Nov 2023Seed$59.5K
- Mar 2022Seed$618.8K
#11
Acquired · Livingston, England · founded 2005 · 6 employees$943.7Mraised▾
Provider of AI and web-based smart metering systems. The product offerings include SMETS2 smart meter, Web Analyzer - an energy management tool, AMR DNA - an AI-driven data processing tool, Z link - a demand management tool, and more. Additionally, the company offers gas metering services, water metering services, energy management services, grid development services, and more.
- Oct 2021Conventional Debt$943.7M
#12
Series A · Belfast, Northern Ireland · founded 2015 · 8 employees$2.3Mraised▾
Provider of AI-powered solutions for wastewater network monitoring and optimisation. The company offers tools for inflow and infiltration detection, blockage detection, and pump station alerting. Solutions also include rising main alerting and spill verification. The company's platform provides real-time intelligence to maximise network efficiency and prevent pollution. It supports compliance through advanced anomaly detection.
- Jan 2025Series A$10.4M
- Jul 2020Seed$2.3M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Water and Wastewater Management Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.