Company lists · Data refreshed September 2026
Top 25 Water filtration service providers based in Spain
RevenueBase identified 150 water filtration service providers headquartered in Spain as of September 2026 and tracks 1,268 professional contacts across them, including 151 with verified work emails. Madrid is the largest hub.
This list covers water filtration service providers headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest water filtration service providers based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 488 contacts → | ||||
Partial evidence “Eden, a proud part of the Culligan family, provides instant access to cleaner, safer, and better-tasting water through our unparalleled expertise in sustainability, science, and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 59 contacts → | ||||
Indirect evidence “UN EQUIPO DE EXPERTOS PARA UNA DECISIÓN 100% SEGURA En Grupo Cartés somos expertos en la propuesta de soluciones de filtración y tratamiento de materia en cualquier estado…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 53 contacts → | ||||
Strong evidence “Manufacturer and wholesale exporter of equipment for water treatment, both domestic and industrial, specializing in: reverse osmosis, filtration, ultrafiltration, MBR…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 33 contacts → | ||||
Indirect evidence “Somos una empresa de productos para el tratamiento de agua única en nuestro sector.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 25 contacts → | ||||
Strong evidence “Fluytec, with a proud legacy spanning over 45 years in the water filtration sector, stands as a distinguished Spanish Engineering and Manufacturing entity.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 22 contacts → | ||||
Indirect evidence “Con más de 28 años de experiencia en el mercado, ATH, ofrece una sólida presencia respaldada por el líder europeo en tecnología del agua.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 19 contacts → | ||||
Indirect evidence “En Geodesic ofrecemos el servicio para la desinfección y mejora de la calidad del agua mediante la aplicación de nuestra avanzada tecnología, tanto a nivel nacional como fuera de…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 18 contacts → | ||||
Indirect evidence “Filternox is an Automatic Self-Cleaning Filter manufacturing company.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 17 contacts → | ||||
Indirect evidence “En DAGA investigamos, desarrollamos y fabricamos equipos especializados para la depuración y tratamiento del agua desde el año 1965.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 16 contacts → | ||||
Indirect evidence “Gesfilter was born in 1995 with the mission of offering the industry the best alternative in the microfiltration of all types of fluids.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 10 contacts → | ||||
Indirect evidence “Nature Works is a filter media made from virgin granulated glass, designed to replace silica sand in any standard filter available on the market and intended for both…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 10 contacts → | ||||
Indirect evidence “Con más de 15 años de experiencia en el sector, Osmofilter se sitúa entre las empresas punteras del sector del tratamiento de agua en España, donde distribuimos nuestros productos…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 9 contacts → | ||||
Indirect evidence “En ProsimeD, realizamos instalaciones llave en mano para el tratamiento integral del agua.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 contacts → | ||||
Indirect evidence “Desde 1993 hemos apostado por la especialización como único canal para alcanzar los mejores resultados en todas y cada una de nuestras acciones de colaboración con nuestros…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 7 contacts → | ||||
Strong evidence “Filtraglass is a water treatment company specializing in the manufacturing of water filtration systems for the glass industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Indirect evidence “La Empresa Aquapurif, fundada en nace con el propósito de proporcionar el mejor servicio en el campo del tratamiento del agua.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Strong evidence “At Cersip we manufacture water filtration systems with solid particles from various materials for all types of industries such as stone, marble, ceramic and metal, among others.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Partial evidence “Osmosys provides affordable access to the highest-quality, healthy, filtered water directly from your tap without the use of plastics or carbon-heavy delivery trucks.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Indirect evidence “En Hydrasana nos preocupamos por la salud de los nuestros y por el medio ambiente.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence “Goodbye plastic, hello Ecofiltro!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Indirect evidence “Especialistas en tratamientos de agua tanto para consumo particular como para uso industrial: ósmosis, agua desmineralizada, descalcificación y también suministros de repuestos.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “Somos una empresa especializada en el tratamiento del agua, tanto domestica como industrial.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “Especialistas en tratamiento de agua para hogares y negocios.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Strong evidence “At DEIAX-AQUOS®, we offer sustainable, technological, and safe solutions for water filtration and purification in businesses, hospitality, the nautical sector, and residences.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “Empresa de alquiler y venta de equipos y fuentes de agua con un innovador sistema de Nanofiltración Se conectan en la red de agua potable y tienen un servicio ilimitado de agua de…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: water filtration service providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names water filtration service providers.
- Partial evidence
- Its own public description names part of water filtration service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name water filtration service providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 150 water filtration service providers based in Spain
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Water filtration service providers based in Spain at a glance
As of Sep 22, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 150 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among water filtration service providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Spain whose own description of what they do matches “water filtration service providers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names water filtration service providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among water filtration service providers, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 151 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names water filtration service providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many water filtration service providers are there based in Spain?
RevenueBase identified 150 water filtration service providers headquartered in Spain as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Eden Springs, headquartered in Barcelona, tops this list with the largest team on record.
Which city has the most water filtration service providers?
Madrid leads with 10 headquartered companies, followed by Barcelona (9) and Valencia (5).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 151 verified decision-maker contacts tracked across these 150 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 150 water filtration service providers based in Spain. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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