Company lists · Data refreshed September 2026

Top 25 Water filtration plant constructors based in Spain

Name: Water filtration plant constructors based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 214 companies tracked

RevenueBase identified 214 water filtration plant constructors headquartered in Spain as of September 2026 and tracks 2,560 professional contacts across them, including 303 with verified work emails. Madrid is the largest hub.

This list covers water filtration plant constructors 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

214Companies

2,560Contacts tracked

303Verified emails

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The 25 largest water filtration plant constructors based in Spain

Ranked by team size

Top 25 of 214 water filtration plant constructors based in Spain, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to water filtration plant constructors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	GS Inima Environment	Strong evidence	Madrid, SpainHQ checked Sep 22, 2026	1,001-5,000	373 contacts →
	Strong evidence “Positioned as one of the companies with the largest number of plants in terms of concessions, GS Inima is a world benchmark in the water sector acting in all phases of the…” Source: RevenueBase Database · checked Sep 22, 2026
2	Cadagua, A Ferrovial Company	Partial evidence	Bilbao-bilbo, SpainHQ checked Sep 22, 2026	51-200	173 contacts →
	Partial evidence “We specialize in the design, construction, and operation of water treatment facilities.” Source: RevenueBase Database · checked Sep 22, 2026
3	Almar Water Solutions	Partial evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	148 contacts →
	Partial evidence “Almar Water Solutions is a leading global water infrastructure development and services business creating innovative, utility-scale, solutions for both municipal and industrial…” Source: RevenueBase Database · checked Sep 22, 2026
4	Espina & Delfín	Indirect evidence	Santiago De Compostela, SpainHQ checked Sep 22, 2026	201-500	112 contacts →
	Indirect evidence “Somos especialistas en la gestión integral del ciclo del agua y en la construcción de obras hidráulicas.” Source: RevenueBase Database · checked Sep 22, 2026
5	Bianna	Partial evidence	Celrà, SpainHQ checked Sep 22, 2026	51-200	104 contacts →
	Partial evidence “For more than 20 years we have developed, planned and installed "turnkey" waste treatment plants all over the world and we are the leading manufacturer of equipment for the sector.” Source: RevenueBase Database · checked Sep 22, 2026
6	Hidro-Water	Strong evidence	Aldaia, SpainHQ checked Sep 22, 2026	51-200	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, 2026
7	Elmasa Tecnología DEL Agua	Indirect evidence	San Bartolomé De Tirajana, SpainHQ checked Sep 22, 2026	11-50	48 contacts →
	Indirect evidence “Elmasa Tecnología del Agua es una empresa especializada en el ciclo integral del agua.” Source: RevenueBase Database · checked Sep 22, 2026
8	Apliclor Water Solutions	Partial evidence	Sant Martí Sesgueioles, SpainHQ checked Sep 22, 2026	51-200	39 contacts →
	Partial evidence “About APLICLOR Water Solutions: Apliclor was originally established back in 1911 as a family business focused on the commercialization of chemical products.” Source: RevenueBase Database · checked Sep 22, 2026
9	Marea, Medio Ambiente, Residuos Y Agua	Indirect evidence	Sevilla, SpainHQ checked Sep 22, 2026	11-50	38 contacts →
	Indirect evidence “Marea es una empresa del grupo RUSVEL de construcción y servicios, con una dilatada experiencia en el ciclo integral del agua y otros campos como la industria, la agricultura, el…” Source: RevenueBase Database · checked Sep 22, 2026
10	Pavagua Ambiental	Indirect evidence	Valencia, SpainHQ checked Sep 22, 2026	51-200	36 contacts →
	Indirect evidence “PAVAGUA AMBIENTAL es una empresa de servicios especializada en la gestión del ciclo integral del agua y el cuidado del medioambiente.” Source: RevenueBase Database · checked Sep 22, 2026
11	Osmofilter Industrial	Indirect evidence	Silla, SpainHQ checked Sep 22, 2026	11-50	36 contacts →
	Indirect evidence “En Osmofilter Industrial somos pioneros en el sector de tratamiento de agua en España y expertos en trabajar con ingenierías que dan solución a los problemas del sector.” Source: RevenueBase Database · checked Sep 22, 2026
12	Fluidra Commercial Pool	Partial evidence	Sant Cugat Del Vallès, SpainHQ checked Sep 22, 2026	1,001-5,000	34 contacts →
	Partial evidence “Fluidra Commercial Pool and Wellness is a Fluidra Business Unit with extensive experience in designing, developing and implementing water facilities all around the world.” Source: RevenueBase Database · checked Sep 22, 2026
13	VDF Team	Indirect evidence	Cardedeu, SpainHQ checked Sep 22, 2026	51-200	33 contacts →
	Indirect evidence “Somos una empresa de productos para el tratamiento de agua única en nuestro sector.” Source: RevenueBase Database · checked Sep 22, 2026
14	Alvinox Instal Lacions Industrials, S.L	Indirect evidence	Algemesí, SpainHQ checked Sep 22, 2026	11-50	33 contacts →
	Indirect evidence “Servicios para la industria: diseño e instalación de almacenamiento, tratamiento y desplazamiento de fluidos y sólidos.” Source: RevenueBase Database · checked Sep 22, 2026
15	Ansareo Grupo	Indirect evidence	Ortuella, SpainHQ checked Sep 22, 2026	1,001-5,000	32 contacts →
	Indirect evidence “Ofrecemos soluciones en cuanto a obra civil, servicios de limpiezas industriales, equipos de bombeo, servicios de jardinería, y un amplio abanico de servicios a disposición de…” Source: RevenueBase Database · checked Sep 22, 2026
16	Odylsa	Indirect evidence	Santa Perpètua De La Mogoda, SpainHQ checked Sep 22, 2026	51-200	31 contacts →
	Indirect evidence “ODYL, S.A.” Source: RevenueBase Database · checked Sep 22, 2026
17	Dinotec	Indirect evidence	Sevilla, SpainHQ checked Sep 22, 2026	11-50	27 contacts →
	Indirect evidence “DINOTEC Sociedad de Aguas y Medio Ambiente S.L.” Source: RevenueBase Database · checked Sep 22, 2026
18	Fluytec	Strong evidence	Abanto-zierbena, SpainHQ checked Sep 22, 2026	51-200	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, 2026
19	Aidesegi SL	Indirect evidence	Derio, SpainHQ checked Sep 22, 2026	11-50	24 contacts →
	Indirect evidence “Aidesegi es una empresa que presta servicios integrales de Ingeniería, Consultoría, Instalación y Mantenimiento de todo tipo de instalaciones mecánicas.” Source: RevenueBase Database · checked Sep 22, 2026
20	Bluegold	Strong evidence	El Campello, SpainHQ checked Sep 22, 2026	11-50	22 contacts →
	Strong evidence “Blue Gold is an engineering company, specialized in the design and supply of water treatment process plants.” Source: RevenueBase Database · checked Sep 22, 2026
21	Filternox	Indirect evidence	Valencia, SpainHQ checked Sep 22, 2026	51-200	18 contacts →
	Indirect evidence “Filternox is an Automatic Self-Cleaning Filter manufacturing company.” Source: RevenueBase Database · checked Sep 22, 2026
22	Piedmont Pacific	Partial evidence	Bilbao, SpainHQ checked Sep 22, 2026	11-50	17 contacts →
	Partial evidence “Piedmont Pacific is a global leader in corrosion resistant equipment for desalination plants and meets critical customer demand for a wide range of applications in the industrial…” Source: RevenueBase Database · checked Sep 22, 2026
23	Daga Equipment	Indirect evidence	Calaf, SpainHQ checked Sep 22, 2026	11-50	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, 2026
24	Condorchem Enviro Solutions	Indirect evidence	Premià De Dalt, SpainHQ checked Sep 22, 2026	11-50	16 contacts →
	Indirect evidence “We are an environmental engineering company that provides comprehensive solutions for wastewater treatment and air pollution control for all industrial activities.” Source: RevenueBase Database · checked Sep 22, 2026
25	Estruagua Water Technology	Partial evidence	Les Franqueses Del Valles, SpainHQ checked Sep 22, 2026	51-200	16 contacts →
	Partial evidence “ESTRUAGUA WATER TECHNOLOGY is one of the most important equipment producer for Wwtp, Wtp, pumping station, desalination projects, etc.” Source: RevenueBase Database · checked Sep 22, 2026

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 plant constructors. 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 plant constructors.
Partial evidence: Its own public description names part of water filtration plant constructors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water filtration plant constructors. 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 214 water filtration plant constructors based in Spain

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Water filtration plant constructors based in Spain at a glance

As of Sep 22, 2026

11.8%Verified-email coverage

12.0Average contacts per company

11-50Median size (employees)

6.1%Largest-city concentration · Madrid

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 214 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 plant constructors, 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 plant constructors”. 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 plant constructors), 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 plant constructors, 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, 303 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 plant constructors, 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 plant constructors are there based in Spain?

RevenueBase identified 214 water filtration plant constructors 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?

GS Inima Environment, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most water filtration plant constructors?

Madrid leads with 13 headquartered companies, followed by Barcelona (8) and Gijon (6).

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 303 verified decision-maker contacts tracked across these 214 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.

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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.