Best Waste & Water Management Companies in Spain
The 113 best Waste & Water Management companies in Spain in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Aqualia.
Ranked by disclosed equity funding and recent momentum, the best Waste & Water Management companies in Spain sit inside a sector that's genuinely moving right now. Our directory tracks 113 companies with $1.4B in total disclosed funding, and the spread tells you everything: Aqualia alone accounts for $1.3B of that, while Gestcompost has pulled in $131M, leaving the rest of the field fighting for ground in the single-digit millions. No unicorns yet, but the CAGR is running at roughly 5.8%, driven by water scarcity pressure, desalination expansion, and cities scrambling to modernize drainage before the next flood season. Hot themes right now include floodplain management and flood resilience, which I'd argue are the two areas drawing the sharpest investor attention this quarter.
So where's the white space? 2018 research on waste stream optimization points toward efficiency gains that Spain's mid-tier operators haven't fully captured. Investors like Europa, the EIC Fund, and Easo Ventures are clearly circling, but the funding concentration is stark. If you're scanning this directory for breakout candidates, look below the top two names, because that's where the next wave is forming.
- prnewswire.com
Our analysis of 100 Waste & Water Management companies
$3.6b in tracked funding; 67% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Waste & Water Management companies in Spain
| # | Company | Disclosed funding | Last round | Stage | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ACAI Depuracion Manufacturer of water treatment systems intended to eliminate the pollution contained in wastewater. | — | — | Private | 7 | — | WordPressMySQLPHP+16 | 3 patents Integrated combined reactors for advanced wastewater treatment processes. | — |
| 2 | Adequa Provider of water management services | — | — | Acquired | — | Ignatius Juan CEO | — | — | — |
| 3 | agbar Agbar is management of water and the environment, continuously applying new developments, technological. | — | — | Acquired | 702 | — | WordPressMySQLPHP+21 | — | — |
| 4 | aguas de valencia Aguas de Valencia is an environmental service company that provides integrated water recycling and water… | — | — | Acquired | 2,400 | — | BootstrapAzureSlider Revolution+13 | — | — |
| 5 | Aguas del Valle del Guadiaro Provider of water supply and irrigation services | — | — | Acquired | 23 | — | — | — | — |
| 6 | aigues sabadell Aigues Sabadell is a water and environment company that provides sustainable municipal water and resources… | — | — | Acquired | 51 | — | LiferayCart FunctionalityJava+15 | — | — |
| 7 | Aigües Ter Llobregat Operator of a water distribution network intended to carries raw water from reservoirs to water treatment… | — | — | Acquired | 240 | — | SentryUbuntuNginx+4 | — | — |
| 8 | Alamak Espana Trade Supplier of recycled metals and plastics. The company cleans and processes ferrous and non-ferrous forms of… | — | — | Deadpooled | 114 | — | — | — | — |
Top 12 Waste & Water Management companies in Spain
#1
Late Stage · Zaragoza, Aragon · founded 2003 · 13 employees$130.8Mraised▾
Provider of waste management and treatment services
- Apr 2025PE$130.8M
- Jul 2020PE—
#2
Series B · Valencia, Valencian Community · founded 2005 · 14 employees$561.7Kraised▾
Provider of organic waste processing services
- Oct 2025Series B$785K
- Mar 2024Series A—
- Oct 2023Grant (prize money)$317.2K
- Jun 2020Series A$561.7K
#3
Late Stage · Madrid, Community of Madrid · founded 2002 · 13000 employees$1.3Braised▾
Provider of water treatment, filtration, and distribution services
- Jun 2022Conventional Debt$1.2B
- Sep 2021Grant (prize money)$879.5K
- Jun 2021Grant (prize money)$1.3M
- Sep 2020Grant (prize money)$1.8M
#4
Seed · Villafranca De Los Barros, Badajoz · founded 2018$1.4Mraised▾
It is a company dedicated to the proper management of electronic waste. They are a Centro Especial de Empleo (CEE) focused on the recycling of electronic devices.
- Jan 2025Seed$1.4M
- Sep 2023Grant (prize money)$37.4K
#5
Seed · San Sebastian, Basque Country · founded 2019 · 10 employees$7.9Mraised▾
Provider of waste water treatment services
- Jul 2023Seed$7.9M
- Oct 2022Seed—
#6
Funding Raised · Barcelona, Catalonia · founded 2007$1.8Mraised▾
Provider of hydrometeorological impact forecasting solutions. It offers integrated mobile and desktop applications delivering real-time data, products, warnings, and protection plans to manage weather-induced hazards. The approach focuses on impact forecasting, enabling proactive management by anticipating effects on critical elements and triggering response protocols in advance. High-resolution local vulnerability models are integrated for hyperlocal impact assessments. Services include 24/7 technical support, post-event analysis, and iterative service updates. Clients can incorporate their own data and build custom products and warnings. The service covers all key aspects of emergency management, from setup to post-event audits.
- Oct 2023Grant (prize money)$477.3K
- Sep 2018Grant (prize money)$351.8K
- Jun 2018Grant (prize money)$311.1K
- Jan 2018Grant (prize money)$361.2K
#7
Funding Raised · Paterna, Valencian Community · founded 2010$4.7Mraised▾
Ceinnmat is a Spanish company focused on developing technology solutions for the treatment of materials in industrial processing applications. The company develops proprietary technology solutions based on microwave technology, electromagnetic treatment, and nanotechnology. The company plans to develop systems based on its technology and provide to industries.
- May 2021Grant (prize money)$857.6K
- Oct 2018Grant (prize money)$1.1M
- May 2018Grant (prize money)$762.4K
- Jan 2018Grant (prize money)$1.2M
#8
Seed · Calp, Valencian Community · founded 2020 · 19 employees$247.7Kraised▾
Provider of plastic waste services
- Nov 2023Seed—
- Nov 2022Seed$247.7K
#9
Funding Raised · Malaga, Andalusia · founded 2003$3Mraised▾
Bioazul is an engineering and technology consulting company that specializes in R&D and innovation projects. They provide integrated solutions for water treatment and reuse, focusing on eco-innovative and sustainable solutions.
- Feb 2020Grant (prize money)$61.2K
- Feb 2019Grant (prize money)$290.7K
- Jan 2019Grant (prize money)$287.2K
- Jan 2019Grant (prize money)$205.5K
#10
Acquired · San Vicent Del Raspeig, Valencian Community · founded 2014$1.4Mraised▾
Provider of plastic recycling services
- Aug 2021Grant (prize money)$59K
- Sep 2019Grant (prize money)$1.2M
- Sep 2016Grant (prize money)$56.1K
- May 2016Grant (prize money)$57.3K
#11
Acquired · San Sebastian, Basque Country · founded 2000$3.5Mraised▾
BuntPlanet is a technology-based company that specializes in applying artificial intelligence to the water sector. They create virtual DMA (District Metered Areas) using a combination of AI, sensors, and hydraulic modeling to ensure a sustainable future for water management. Recently, Siemens acquired BuntPlanet, marking an exciting new chapter of innovation for the company.
- Jan 2020Grant (prize money)$1.7M
- Feb 2018Grant (prize money)$1.9M
#12
Funding Raised · Coruna, Galicia · founded 1991 · 100 employees$1.4Mraised▾
Centro Tecnológico de ámbito estatal reconocido oficialmente, ubicado en A Coruña y constituido en 1991 que tiene como objetivo mejorar la capacidad competitiva a través de la investigación y prestación de servicios profesionales en el ámbito de la energía y el medioambiente, la construcción sostenible y las telecomunicaciones. De naturaleza privada, ITG está certificado en su sistema de gestión de calidad y de I+D+i, acreditado por ENAC para certificar Asesores en Edificación Sostenible, es miembro del consejo rector de la Federación de Centros Tecnológicos de España (FEDIT) y su PATRONATO está constituido por: los Colegios Oficiales de Arquitectos; Ingenieros Industriales; Ingenieros de Ca
- Sep 2021Grant (prize money)$329.8K
- Jan 2021Grant (prize money)$992.1K
- Nov 2018Grant (prize money)$29K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Waste & Water Management 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.