Company lists · Data refreshed September 2026

Top 25 Wastewater management consultants based in Spain

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 244 companies tracked

RevenueBase identified 244 wastewater management consultants headquartered in Spain as of September 2026 and tracks 4,598 professional contacts across them, including 452 with verified work emails. Madrid is the largest hub.

This list covers wastewater management consultants 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 29, 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 29, 2026 86% judged on-target in blind review

244Companies

4,598Contacts tracked

452Verified emails

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The 25 largest wastewater management consultants based in Spain

Ranked by team size

Top 25 of 244 wastewater management consultants based in Spain, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to wastewater management consultants: 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	Aqualia	Indirect evidence	Madrid, SpainHQ checked Sep 29, 2026	5,001-10,000	1,395 contacts →
	Indirect evidence “Aqualia es la cuarta empresa de gestión del agua de Europa y la novena del Mundo por población servida, según el último ranking de Global Water Intelligence (diciembre de 2024).” Source: RevenueBase Database · checked Sep 29, 2026
2	GS Inima Environment	Indirect evidence	Madrid, SpainHQ checked Sep 29, 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 29, 2026
3	Facsa. Ciclo Integral DEL Agua	Indirect evidence	Castellón De La Plana, SpainHQ checked Sep 29, 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 29, 2026
4	Cadagua, A Ferrovial Company	Indirect evidence	Bilbao-bilbo, SpainHQ checked Sep 29, 2026	51-200	173 contacts →
	Indirect evidence “We specialize in the design, construction, and operation of water treatment facilities.” Source: RevenueBase Database · checked Sep 29, 2026
5	Gestión Y Técnicas DEL Agua S.A. Gestagua	Indirect evidence	Madrid, SpainHQ checked Sep 29, 2026	201-500	143 contacts →
	Indirect evidence “En Gestagua, filial española del grupo Saur, los Municipios encuentran no sólo un operador eficiente para todas las fases del Ciclo del Agua, sino un socio activo para la gestión…” Source: RevenueBase Database · checked Sep 29, 2026
6	Bianna	Indirect evidence	Celrà, SpainHQ checked Sep 29, 2026	51-200	104 contacts →
	Indirect 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 29, 2026
7	MIYA	Partial evidence	Madrid, SpainHQ checked Sep 29, 2026	51-200	101 contacts →
	Partial evidence “MIYA is a global efficiency-oriented water operator with vast experience and a full range offering for water utilities including water efficiency, commercial management and water…” Source: RevenueBase Database · checked Sep 29, 2026
8	Aqlara Ciclo Integral DEL Agua	Indirect evidence	Valencia, SpainHQ checked Sep 29, 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 29, 2026
9	ACO Iberia	Indirect evidence	Maçanet De La Selva, SpainHQ checked Sep 29, 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 29, 2026
10	ABM Serveis D Enginyeria I Consulting S.L	Indirect evidence	Riudellots De La Selva, SpainHQ checked Sep 29, 2026	11-50	47 contacts →
	Indirect evidence “ABM Consulting is a consulting and engineering services company with over 20 years of experience.” Source: RevenueBase Database · checked Sep 29, 2026
11	Inncive	Indirect evidence	Madrid, SpainHQ checked Sep 29, 2026	51-200	45 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026
12	Intacta Gestión Ambiental	Indirect evidence	As Pontes De García Rodríguez, SpainHQ checked Sep 29, 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 29, 2026
13	Depuración DE Aguas DEL Mediterráneo, S.L	Indirect evidence	Paterna, SpainHQ checked Sep 29, 2026	501-1,000	44 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
14	Transparenta Cicle Integral DE L'aigua	Indirect evidence	Sant Cugat Del Vallès, SpainHQ checked Sep 29, 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 29, 2026
15	Pavagua Ambiental	Indirect evidence	Valencia, SpainHQ checked Sep 29, 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 29, 2026
16	Distiller	Partial evidence	Santa Perpètua De Mogoda, SpainHQ checked Sep 29, 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 29, 2026
17	Odylsa	Indirect evidence	Santa Perpètua De La Mogoda, SpainHQ checked Sep 29, 2026	51-200	31 contacts →
	Indirect evidence “ODYL, S.A.” Source: RevenueBase Database · checked Sep 29, 2026
18	Hidrotec Sanejament, S.L.U	Indirect evidence	Rubí, SpainHQ checked Sep 29, 2026	11-50	30 contacts →
	Indirect evidence “Más de 25 años asesorando tecnológicamente y estudiando modelos de actuación sostenibles que mejoran las intervenciones realizadas en la red de saneamiento.” Source: RevenueBase Database · checked Sep 29, 2026
19	Labygema	Indirect evidence	Seville, SpainHQ checked Sep 29, 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 29, 2026
20	Valtalia	Indirect evidence	Ourense, SpainHQ checked Sep 29, 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 29, 2026
21	Dinotec	Indirect evidence	Seville, SpainHQ checked Sep 29, 2026	11-50	27 contacts →
	Indirect evidence “DINOTEC Sociedad de Aguas y Medio Ambiente S.L.” Source: RevenueBase Database · checked Sep 29, 2026
22	Consulnima	Indirect evidence	Madrid, SpainHQ checked Sep 29, 2026	11-50	26 contacts →
	Indirect evidence “Consultoría e ingeniería ambiental.” Source: RevenueBase Database · checked Sep 29, 2026
23	TAGUA	Indirect evidence	Santa Cruz De Tenerife, SpainHQ checked Sep 29, 2026	51-200	25 contacts →
	Indirect evidence “Nuestro objetivo es actuar de la forma más eficaz en la gestión del agua en todos sus usos posibles: consumo urbano, agricultura, industrial, turismo y ocio.” Source: RevenueBase Database · checked Sep 29, 2026
24	Sereco Gestion, S.L	Indirect evidence	Oruña, SpainHQ checked Sep 29, 2026	11-50	18 contacts →
	Indirect evidence “SERECO is a Spanish company with 25 years of experience, offering services to reduce the environmental impact of sludge and waste ON-SITE, nationally and internationally, using…” Source: RevenueBase Database · checked Sep 29, 2026
25	Condorchem Enviro Solutions	Partial evidence	Premià De Dalt, SpainHQ checked Sep 29, 2026	11-50	16 contacts →
	Partial 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 29, 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 management consultants. 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 management consultants.
Partial evidence: Its own public description names part of wastewater management consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater management consultants. 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 244 wastewater management consultants based in Spain

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Wastewater management consultants based in Spain at a glance

As of Sep 29, 2026

9.8%Verified-email coverage

18.8Average contacts per company

1-10Median size (employees)

12.7%Largest-city concentration · Madrid

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

123

11-50

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 244 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 management consultants, 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 management consultants”. 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 management consultants), 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 management consultants, 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, 452 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 29, 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 management consultants, 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 management consultants are there based in Spain?

RevenueBase identified 244 wastewater management consultants 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?

Aqualia, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most wastewater management consultants?

Madrid leads with 31 headquartered companies, followed by Barcelona (14) and Valencia (8).

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 452 verified decision-maker contacts tracked across these 244 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 29, 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.