Company lists · Data refreshed September 2026

Top 21 Activated sludge system installers based in Spain

RevenueBase identified 93 company matches for activated sludge system installers associated with Spain as of September 2026 and tracks 1,096 professional contacts across them, including 95 with verified work emails. Madrid is the largest hub.

This list covers company matches for activated sludge system installers 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 September 19, 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 Sep 19, 2026 How this list was built
93Companies
1,096Contacts tracked
95Verified emails
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The 21 largest activated sludge system installers based in Spain

Ranked by team size
Top 21 of 93 company matches for activated sludge system installers based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBilbao-bilbo, SpainHQ recorded Sep 19, 202651-200173 contacts →

Exact match

“We specialize in the design, construction, and operation of water treatment facilities.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchCelrà, SpainHQ recorded Sep 19, 202651-200104 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 · Sep 19, 2026 · View company records in RevenueBase
3Exact matchSallent, SpainHQ recorded Sep 19, 202611-5083 contacts →

Exact match

“ECOTEC - Ecología Técnica, S.A.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchPaterna, SpainHQ recorded Sep 19, 2026501-1,00044 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchValencia, SpainHQ recorded Sep 19, 202651-20036 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 · Sep 19, 2026 · View company records in RevenueBase
6Exact matchAlgemesí, SpainHQ recorded Sep 19, 202611-5033 contacts →

Exact match

“Servicios para la industria: diseño e instalación de almacenamiento, tratamiento y desplazamiento de fluidos y sólidos.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchOurense, SpainHQ recorded Sep 19, 2026201-50029 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchSeville, SpainHQ recorded Sep 19, 202611-5027 contacts →

Exact match

“DINOTEC Sociedad de Aguas y Medio Ambiente S.L.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchPremià De Dalt, SpainHQ recorded Sep 19, 202611-5016 contacts →

Exact match

“We are an environmental engineering company that provides comprehensive solutions for wastewater treatment and air pollution control for all industrial activities.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchIgualada, SpainHQ recorded Sep 19, 202611-5011 contacts →

Exact match

“Somos una empresa dedicada al tratamiento de aguas, urbanas e industriales, con una amplia trayectoria de más de 26 años.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchTona, SpainHQ recorded Sep 19, 202611-5010 contacts →

Exact match

“At Depurtech we are dedicated to the comprehensive treatment of wastewater, industrial, urban and slurry.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchCornellà Del Terri, SpainHQ recorded Sep 19, 202611-509 contacts →

Exact match

“We are an engineering company with more than 40 years of experience, specialized in the implementation of projects for the treatment of industrial wastewater with our own…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchAlcobendas, SpainHQ recorded Sep 19, 202611-508 contacts →

Exact match

“HUBER es una empresa multinacional especializada en maquinaria, plantas y equipos de acero inoxidable de alta calidad para el tratamiento de aguas residuales y lodos municipales e…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchMadrid, SpainHQ recorded Sep 19, 20261-106 contacts →

Exact match

“Somos una empresa de ingeniería y consultoría dedicada al diseño de plantas de tratamiento de agua.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchManises, SpainHQ recorded Sep 19, 20261-106 contacts →

Exact match

“Diagnóstico, Diseño e instalación llave en mano de equipos e instalaciones de tratamiento de aguas potables y residuales.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchArroyomolinos, SpainHQ recorded Sep 19, 202611-505 contacts →

Exact match

“Diseño, fabricación, instalación, mantenimiento y alquiler de plantas para el tratamiento de suelos y aguas subterráneas contaminadas”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchLas Rozas De Madrid, SpainHQ recorded Sep 19, 20261-104 contacts →

Exact match

“Somos una empresa de consultores tecnológicos y de expertos en depuración de aguas residuales.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchMataró, SpainHQ recorded Sep 19, 20261-104 contacts →

Exact match

“Empresa especializada en el diseño, fabricación y comercialización de máquinas, equipos y productos para el tratamiento de aguas residuales, industriales y urbanas.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchAranda De Duero, SpainHQ recorded Sep 19, 20261-103 contacts →

Exact match

“En 2001, SYNTEA, con el fin de trasladar la experiencia acumulada, pone en marcha un plan de expansión en la península Ibérica, creando, Técnicas y Tratamientos de Depuración, S.A.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchSant Cugat Del Vallès, SpainHQ recorded Sep 19, 20261-101 contacts →

Exact match

“B2S Renewable Energies is an environmental engineering and consultancy with high expertise and knowledge in the integral water cycle and green renewable energy recovery of organic…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchMoncada Y Reixach, SpainHQ recorded Sep 19, 20261-101 contacts →

Exact match

“En el año 2.004 nace Domo Medioambiente con el objetivo de ofrecer un servicio técnico especializado en lavado, y tratamiento de las aguas derivadas, realizando proyectos a medida…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 21 of 93 activated sludge system installers based in Spain

See the full list, filter by size, metro and specialty, and access 95 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Activated sludge system installers based in Spain at a glance

As of Sep 19, 2026
8.7%Verified-email coverage
11.8Average contacts per company
11-50Median size (employees)
5.4%Largest-city concentration · Madrid
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
36
11-50
41
51-200
12
201-500
2
501-1,000
1

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 93 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 “activated sludge system installers” 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 95 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 September 19, 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.

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 “activated sludge system installers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many activated sludge system installers are there based in Spain?

RevenueBase identified 93 company matches for activated sludge system installers associated with Spain as of September 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?

Cadagua, A Ferrovial Company tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most activated sludge system installers?

Madrid leads with 5 company records, followed by Barcelona (4) and Paterna (3).

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 95 professional contacts with verified work emails tracked across these 93 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 September 19, 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.