Company lists · Data refreshed October 2026

Top 25 Environmental treatment engineering firms based in Spain

Name: Environmental treatment engineering firms based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 413 companies tracked

RevenueBase identified 413 company matches for environmental treatment engineering firms associated with Spain as of October 2026 and tracks 5,933 professional contacts across them, including 619 with verified work emails. Madrid is the largest hub.

This list covers company matches for environmental treatment engineering firms associated with Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 12, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 12, 2026 How this list was built

413Companies

5,933Contacts tracked

619Verified emails

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The 25 largest environmental treatment engineering firms based in Spain

Ranked by team size

Top 25 of 413 company matches for environmental treatment engineering firms based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Inerco	Exact match	Seville, SpainHQ recorded Oct 12, 2026	1,001-5,000	735 contacts →
	Exact match “INERCO is a multinational technology company specialising in sustainability.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Facsa. Ciclo Integral DEL Agua	Exact match	Castellón De La Plana, SpainHQ recorded Oct 12, 2026	1,001-5,000	332 contacts →
	Exact match “Facsa, empresa ‘origen’ de Nealis, es una referencia en el territorio nacional en la gestión global de los recursos hídricos.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Ecointegral Ingeniería, SL	Exact match	Córdoba, SpainHQ recorded Oct 12, 2026	201-500	255 contacts →
	Exact match “ECOINTEGRAL INGENIERÍA is an independent company of advanced engineering and consulting firm that operates in 3 areas of expertise: Energy, Telecommunications and Environment.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Cadagua, A Ferrovial Company	Exact match	Bilbao-bilbo, SpainHQ recorded Oct 12, 2026	51-200	185 contacts →
	Exact match “We specialize in the design, construction, and operation of water treatment facilities.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Antea Group España Y Latinoamérica	Exact match	A Coruña, SpainHQ recorded Oct 12, 2026	51-200	143 contacts →
	Exact match “Desde su fundación en A Coruña en el año 1985 ICEACSA se ha posicionado en el mercado español como una consultora pionera y líder en el desarrollo integral de proyectos en los…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Bianna	Exact match	Celrà, SpainHQ recorded Oct 12, 2026	51-200	127 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Espina & Delfín	Exact match	Santiago De Compostela, SpainHQ recorded Oct 12, 2026	201-500	116 contacts →
	Exact match “Somos especialistas en la gestión integral del ciclo del agua y en la construcción de obras hidráulicas.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Azcatec Tecnología E Ingeniería	Exact match	Seville, SpainHQ recorded Oct 12, 2026	51-200	106 contacts →
	Exact match “AZCATEC It is the tool for a group of well-organized professional engineers and experts in the development of industrial plants, energy and environmental engineering have to…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Tecnigral	Exact match	Madrid, SpainHQ recorded Oct 12, 2026	51-200	98 contacts →
	Exact match “Tecnigral was born in 1991 and is active in the field of engineering and environmental consultancy, providing solutions and tools primarily on Waste Management, Parks and Gardens…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Litoclean	Exact match	Barcelona, SpainHQ recorded Oct 12, 2026	51-200	93 contacts →
	Exact match “Litoclean es una consultora medioambiental experta en el desarrollo de proyectos de investigación y descontaminación de suelos.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Emgrisa	Exact match	Madrid, SpainHQ recorded Oct 12, 2026	51-200	88 contacts →
	Exact match “Emgrisa es una empresa pionera en servicios y soluciones medioambientales y en economía circular.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Ecotec	Exact match	Sallent, SpainHQ recorded Oct 12, 2026	11-50	86 contacts →
	Exact match “ECOTEC - Ecología Técnica, S.A.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Afesa Medio Ambiente, S. A	Exact match	Derio, SpainHQ recorded Oct 12, 2026	51-200	83 contacts →
	Exact match “AFESA Medio Ambiente, S.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	TECAM	Exact match	Polinyà, SpainHQ recorded Oct 12, 2026	51-200	62 contacts →
	Exact match “Customized solutions for waste valorization and emissions treatment.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	ACO Iberia	Exact match	Maçanet De La Selva, SpainHQ recorded Oct 12, 2026	51-200	60 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Intacta Gestión Ambiental	Exact match	As Pontes De García Rodríguez, SpainHQ recorded Oct 12, 2026	11-50	50 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Inncive	Exact match	Madrid, SpainHQ recorded Oct 12, 2026	51-200	49 contacts →
	Exact match “Constituida en el año INNOVACIÓN CIVIL ESPAÑOLA, S.L es una empresa de Ingeniería y Consultoría especializada en el campo de la Ingeniería Sanitaria y Medioambiental.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Elmasa Tecnología DEL Agua	Exact match	San Bartolomé De Tirajana, SpainHQ recorded Oct 12, 2026	11-50	46 contacts →
	Exact match “Elmasa Tecnología del Agua es una empresa especializada en el ciclo integral del agua.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Sorea S.A.U	Exact match	Barcelona, SpainHQ recorded Oct 12, 2026	501-1,000	44 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Detegasa	Exact match	Narón, SpainHQ recorded Oct 12, 2026	51-200	42 contacts →
	Exact match “Detegasa designs, manufactures and markets high-tech waste and water treatment solutions for Navy, Marine & Offshore Industries, providing an integrated lifecycle support.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Depuración DE Aguas DEL Mediterráneo, S.L	Exact match	Paterna, SpainHQ recorded Oct 12, 2026	501-1,000	41 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Pavagua Ambiental	Exact match	Valencia, SpainHQ recorded Oct 12, 2026	51-200	39 contacts →
	Exact match “PAVAGUA AMBIENTAL es una empresa de servicios especializada en la gestión del ciclo integral del agua y el cuidado del medioambiente.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Dinotec	Exact match	Seville, SpainHQ recorded Oct 12, 2026	11-50	38 contacts →
	Exact match “DINOTEC Sociedad de Aguas y Medio Ambiente S.L.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Fluidra Commercial Pool	Exact match	Sant Cugat Del Vallès, SpainHQ recorded Oct 12, 2026	1,001-5,000	37 contacts →
	Exact match “Fluidra Commercial Pool and Wellness is a Fluidra Business Unit with extensive experience in designing, developing and implementing water facilities all around the world.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Distiller	Exact match	Santa Perpètua De Mogoda, SpainHQ recorded Oct 12, 2026	51-200	37 contacts →
	Exact match “Distiller is a leader in the treatment and management of industrial waste, as well as in the recovery of solvents and water treatment.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “environmental treatment engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 413 environmental treatment engineering firms based in Spain

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Environmental treatment engineering firms based in Spain at a glance

As of Oct 12, 2026

10.4%Verified-email coverage

14.4Average contacts per company

11-50Median size (employees)

12.1%Largest-city concentration · Madrid

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

200

11-50

156

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 413 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Spain whose business descriptions match “environmental treatment engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 619 professional contacts with verified work emails across the full matched dataset. 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 October 12, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Environmental treatment engineering firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “environmental treatment engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental treatment engineering firms are there based in Spain?

RevenueBase identified 413 company matches for environmental treatment engineering firms associated with Spain as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Inerco tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most environmental treatment engineering firms?

Madrid leads with 50 company records, followed by Barcelona (30) and Seville (15).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 619 professional contacts with verified work emails tracked across these 413 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 12, 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 SmartSearch, 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.