Company lists · Data refreshed September 2026

Top 25 Wastewater treatment companies based in Spain

Name: Wastewater treatment companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 270 companies tracked

RevenueBase identified 270 wastewater treatment companies headquartered in Spain as of September 2026 and tracks 4,534 professional contacts across them, including 391 with verified work emails. Madrid is the largest hub.

This list covers wastewater treatment companies 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 16, 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 16, 2026 86% judged on-target in blind review

270Companies

4,534Contacts tracked

391Verified emails

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The 25 largest wastewater treatment companies based in Spain

Ranked by team size

Top 25 of 270 wastewater treatment companies based in Spain, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to wastewater treatment companies: 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	Indirect evidence	Madrid, SpainHQ checked Sep 16, 2026	1,001-5,000	373 contacts →
	Indirect 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 16, 2026
2	Facsa. Ciclo Integral DEL Agua	Indirect evidence	Castellón De La Plana, SpainHQ checked Sep 16, 2026	1,001-5,000	305 contacts →
	Indirect evidence “Facsa, empresa ‘origen’ de Nealis, es una referencia en el territorio nacional en la gestión global de los recursos hídricos.” Source: RevenueBase Database · checked Sep 16, 2026
3	Cadagua, A Ferrovial Company	Partial evidence	Bilbao-bilbo, SpainHQ checked Sep 16, 2026	51-200	173 contacts →
	Partial evidence “We specialize in the design, construction, and operation of water treatment facilities.” Source: RevenueBase Database · checked Sep 16, 2026
4	Bianna	Partial evidence	Celrà, SpainHQ checked Sep 16, 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 16, 2026
5	Ecotec	Indirect evidence	Sallent, SpainHQ checked Sep 16, 2026	11-50	83 contacts →
	Indirect evidence “ECOTEC - Ecología Técnica, S.A.” Source: RevenueBase Database · checked Sep 16, 2026
6	Aqlara Ciclo Integral DEL Agua	Indirect evidence	Valencia, SpainHQ checked Sep 16, 2026	51-200	81 contacts →
	Indirect evidence “Somos una empresa dedicada a la gestión de servicios de abastecimiento domiciliario de agua potable y explotación de sistemas de saneamiento de agua residual.” Source: RevenueBase Database · checked Sep 16, 2026
7	ACO Iberia	Indirect evidence	Maçanet De La Selva, SpainHQ checked Sep 16, 2026	51-200	50 contacts →
	Indirect evidence “ACO Grupo Iberia now offers, together with ACO Remosa-a family-run company with a long-standing presence in the market and now part of the ACO Group-systems and services to…” Source: RevenueBase Database · checked Sep 16, 2026
8	Elmasa Tecnología DEL Agua	Indirect evidence	San Bartolomé De Tirajana, SpainHQ checked Sep 16, 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 16, 2026
9	Intacta Gestión Ambiental	Indirect evidence	As Pontes De García Rodríguez, SpainHQ checked Sep 16, 2026	11-50	45 contacts →
	Indirect evidence “Intacta surge como una sinergia que une la participación activa y concertada para alcanzar una eficacia total y garantizar cualquier servicio medioambiental, pero con ella nace…” Source: RevenueBase Database · checked Sep 16, 2026
10	Sorea S.A.U	Indirect evidence	Barcelona, SpainHQ checked Sep 16, 2026	501-1,000	45 contacts →
	Indirect evidence “SOREA és una empresa del sector del medi ambient que gestiona tots els processos del cicle integral de l’aigua: la captació, la potabilització, el transport, la distribució, el…” Source: RevenueBase Database · checked Sep 16, 2026
11	Depuración DE Aguas DEL Mediterráneo, S.L	Indirect evidence	Paterna, SpainHQ checked Sep 16, 2026	501-1,000	44 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
12	Kinetico Spain	Indirect evidence	L'ametlla Del Vallès, SpainHQ checked Sep 16, 2026	201-500	43 contacts →
	Indirect evidence “Los productos Kinetico resuelven los problemas de calidad del agua de familias y negocios de todo el mundo, con el fin de garantizar que las ventajas del tratamiento de aguas…” Source: RevenueBase Database · checked Sep 16, 2026
13	Transparenta Cicle Integral DE L'aigua	Indirect evidence	Sant Cugat Del Vallès, SpainHQ checked Sep 16, 2026	51-200	42 contacts →
	Indirect evidence “Transparenta garanteix una gestió enfocada a aconseguir la màxima satisfacció del client a través de la millora contínua, eficiència i sostenibilitat de les prestacions.” Source: RevenueBase Database · checked Sep 16, 2026
14	Detegasa	Partial evidence	Narón, SpainHQ checked Sep 16, 2026	51-200	42 contacts →
	Partial evidence “Detegasa designs, manufactures and markets high-tech waste and water treatment solutions for Navy, Marine & Offshore Industries, providing an integrated lifecycle support.” Source: RevenueBase Database · checked Sep 16, 2026
15	Apliclor Water Solutions	Indirect evidence	Sant Martí Sesgueioles, SpainHQ checked Sep 16, 2026	51-200	39 contacts →
	Indirect 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 16, 2026
16	Pavagua Ambiental	Indirect evidence	Valencia, SpainHQ checked Sep 16, 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 16, 2026
17	Osmofilter Industrial	Indirect evidence	Silla, SpainHQ checked Sep 16, 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 16, 2026
18	Distiller	Partial evidence	Santa Perpètua De Mogoda, SpainHQ checked Sep 16, 2026	51-200	33 contacts →
	Partial evidence “Distiller is a leader in the treatment and management of industrial waste, as well as in the recovery of solvents and water treatment.” Source: RevenueBase Database · checked Sep 16, 2026
19	VDF Team	Indirect evidence	Cardedeu, SpainHQ checked Sep 16, 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 16, 2026
20	Odylsa	Indirect evidence	Santa Perpètua De La Mogoda, SpainHQ checked Sep 16, 2026	51-200	31 contacts →
	Indirect evidence “ODYL, S.A.” Source: RevenueBase Database · checked Sep 16, 2026
21	Labygema	Indirect evidence	Sevilla, SpainHQ checked Sep 16, 2026	51-200	30 contacts →
	Indirect evidence “LABYGEMA, Laboratorio y Gestión Medioambiental es una empresa especializada en servicios medioambientales y aguas.” Source: RevenueBase Database · checked Sep 16, 2026
22	Valtalia	Indirect evidence	Ourense, SpainHQ checked Sep 16, 2026	201-500	29 contacts →
	Indirect evidence “Grupo empresarial que, desde su fundación en el año 2005 ha tenido una trayectoria de crecimiento constante y sostenido, experimentando un proceso de diversificación tanto…” Source: RevenueBase Database · checked Sep 16, 2026
23	Sigmadaf Clarifiers	Partial evidence	Cornellà Del Terri, SpainHQ checked Sep 16, 2026	11-50	29 contacts →
	Partial evidence “SIGMADAF Clarifiers is a water treatment company with over 30 years of experience in the field of DAF manufacturing and whose infrastructure is based in providing a modular…” Source: RevenueBase Database · checked Sep 16, 2026
24	Peter Taboada	Indirect evidence	Redondela, SpainHQ checked Sep 16, 2026	11-50	29 contacts →
	Indirect evidence “Peter Taboada, S.L.” Source: RevenueBase Database · checked Sep 16, 2026
25	Dinotec	Indirect evidence	Sevilla, SpainHQ checked Sep 16, 2026	11-50	27 contacts →
	Indirect evidence “DINOTEC Sociedad de Aguas y Medio Ambiente S.L.” Source: RevenueBase Database · checked Sep 16, 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: wastewater treatment companies. 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 wastewater treatment companies.
Partial evidence: Its own public description names part of wastewater treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater treatment companies. 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 270 wastewater treatment companies based in Spain

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Wastewater treatment companies based in Spain at a glance

As of Sep 16, 2026

8.6%Verified-email coverage

16.8Average contacts per company

11-50Median size (employees)

7.0%Largest-city concentration · Madrid

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

117

11-50

103

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 270 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 wastewater treatment companies, 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 “wastewater treatment companies”. 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 wastewater treatment companies), 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 wastewater treatment companies, 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, 391 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 16, 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 wastewater treatment companies, 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 wastewater treatment companies are there based in Spain?

RevenueBase identified 270 wastewater treatment companies 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 wastewater treatment companies?

Madrid leads with 19 headquartered companies, followed by Barcelona (14) and Valencia (9).

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 391 verified decision-maker contacts tracked across these 270 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 16, 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.