Company lists · Data refreshed September 2026

Top 25 Water supply companies based in Spain

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 147 companies tracked

RevenueBase identified 147 water supply companies headquartered in Spain as of September 2026 and tracks 4,871 professional contacts across them, including 555 with verified work emails. Barcelona is the largest hub.

This list covers water supply 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 19, 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 19, 2026 86% judged on-target in blind review

147Companies

4,871Contacts tracked

555Verified emails

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The 25 largest water supply companies based in Spain

Ranked by team size

Top 25 of 147 water supply companies based in Spain, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to water supply 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	Aqualia	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	5,001-10,000	1,395 contacts →
	Partial 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 19, 2026
2	Eden Springs	Partial evidence	Barcelona, SpainHQ checked Sep 19, 2026	1,001-5,000	488 contacts →
	Partial evidence “Eden, a proud part of the Culligan family, provides instant access to cleaner, safer, and better-tasting water through our unparalleled expertise in sustainability, science, and…” Source: RevenueBase Database · checked Sep 19, 2026
3	Aigües DE Barcelona	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	501-1,000	434 contacts →
	Indirect evidence “La empresa público-privada Aigües de Barcelona, Empresa Metropolitana de Gestió del Cicle Integral de l'Aigua, participada en un 70% por Agbar, en un 15% por el Área Metropolitana…” Source: RevenueBase Database · checked Sep 19, 2026
4	Facsa. Ciclo Integral DEL Agua	Indirect evidence	Castellón De La Plana, SpainHQ checked Sep 19, 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 19, 2026
5	Cadagua, A Ferrovial Company	Partial evidence	Bilbao-bilbo, SpainHQ checked Sep 19, 2026	51-200	173 contacts →
	Partial evidence “We specialize in the design, construction, and operation of water treatment facilities.” Source: RevenueBase Database · checked Sep 19, 2026
6	Almar Water Solutions	Partial evidence	Madrid, SpainHQ checked Sep 19, 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 19, 2026
7	Gestión Y Técnicas DEL Agua S.A. Gestagua	Indirect evidence	Madrid, SpainHQ checked Sep 19, 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 19, 2026
8	MIYA	Partial evidence	Madrid, SpainHQ checked Sep 19, 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 19, 2026
9	Aguas DE Murcia	Indirect evidence	Murcia, SpainHQ checked Sep 19, 2026	201-500	100 contacts →
	Indirect evidence “Aguas de Murcia (EMUASA) gestiona y suministra el servicio de agua potable a cerca de medio millón de habitantes en la ciudad de Murcia (España) Está constituida como empresa…” Source: RevenueBase Database · checked Sep 19, 2026
10	Consorcio DE Aguas Bilbao Bizkaia	Indirect evidence	Bilbao, SpainHQ checked Sep 19, 2026	201-500	97 contacts →
	Indirect evidence “Ur Partzuergoa da lehen mailako sarea kudeatzeaz arduratzen den erakundea; gutxi gorabehera, Bizkaiko milioi bat biztanleren edateko uraren horniduraz eta hondakin uren…” Source: RevenueBase Database · checked Sep 19, 2026
11	Aguas DE Alicante	Indirect evidence	Alicante, SpainHQ checked Sep 19, 2026	201-500	85 contacts →
	Indirect evidence “Aguas Municipalizadas de Alicante, Empresa Mixta (Aguas de Alicante), cuya sede social está ubicada en la calle Alona 31 de Alicante (España), está participada en un 50 % por el…” Source: RevenueBase Database · checked Sep 19, 2026
12	Aqlara Ciclo Integral DEL Agua	Indirect evidence	Valencia, SpainHQ checked Sep 19, 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 19, 2026
13	ACO Iberia	Indirect evidence	Maçanet De La Selva, SpainHQ checked Sep 19, 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 19, 2026
14	Aguas DE Córdoba	Indirect evidence	Córdoba, SpainHQ checked Sep 19, 2026	201-500	47 contacts →
	Indirect evidence “Aguas de Córdoba es la nueva imagen comercial con la que la Diputación de Córdoba, a través de su empresa gestora EMPROACSA con 25 años de experiencia, sigue avanzando en la tarea…” Source: RevenueBase Database · checked Sep 19, 2026
15	Sorea S.A.U	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 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 19, 2026
16	Depuración DE Aguas DEL Mediterráneo, S.L	Indirect evidence	Paterna, SpainHQ checked Sep 19, 2026	501-1,000	44 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
17	Transparenta Cicle Integral DE L'aigua	Indirect evidence	Sant Cugat Del Vallès, SpainHQ checked Sep 19, 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 19, 2026
18	Gipuzkoako UR Kontsortzioa	Indirect evidence	San Sebastián, SpainHQ checked Sep 19, 2026	201-500	37 contacts →
	Indirect evidence “Impulsado por un número muy importante de municipios gipuzkoanos, el Consorcio de Aguas de Gipuzkoa nació en 1990 con el cometido de construir una nueva y moderna red de…” Source: RevenueBase Database · checked Sep 19, 2026
19	Pavagua Ambiental	Indirect evidence	Valencia, SpainHQ checked Sep 19, 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 19, 2026
20	VDF Team	Indirect evidence	Cardedeu, SpainHQ checked Sep 19, 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 19, 2026
21	Ansareo Grupo	Indirect evidence	Ortuella, SpainHQ checked Sep 19, 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 19, 2026
22	Odylsa	Indirect evidence	Santa Perpètua De La Mogoda, SpainHQ checked Sep 19, 2026	51-200	31 contacts →
	Indirect evidence “ODYL, S.A.” Source: RevenueBase Database · checked Sep 19, 2026
23	Acosol S.A	Indirect evidence	Marbella, SpainHQ checked Sep 19, 2026	201-500	30 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
24	Aigües DE Mataró SA	Indirect evidence	Mataro, SpainHQ checked Sep 19, 2026	51-200	28 contacts →
	Indirect evidence “Aigües de Mataró, SA (AMSA) és una societat municipal amb domicili al carrer Pitàgores, 1-7 de Mataró propietat de l’Ajuntament de Mataró, que s’encarrega de la gestió integral de…” Source: RevenueBase Database · checked Sep 19, 2026
25	OPS Infraestructuras Y Servicios Hidraulicos SL	Indirect evidence	Humanes De Madrid, SpainHQ checked Sep 19, 2026	51-200	25 contacts →
	Indirect evidence “OPS INFRAESTRUCTURAS Y SERVICIOS HIDRAULICOS SL is a construction company based out of CALLE DALIA, 4, MADRID, Madrid, Spain.” Source: RevenueBase Database · checked Sep 19, 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 supply 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 water supply companies.
Partial evidence: Its own public description names part of water supply companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water supply 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 147 water supply companies based in Spain

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Water supply companies based in Spain at a glance

As of Sep 19, 2026

11.4%Verified-email coverage

33.1Average contacts per company

11-50Median size (employees)

6.8%Largest-city concentration · Barcelona

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

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 147 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 supply 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 “water supply 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 water supply 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 water supply 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, 555 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 19, 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 supply 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 water supply companies are there based in Spain?

RevenueBase identified 147 water supply 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?

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

Which city has the most water supply companies?

Barcelona leads with 10 headquartered companies, followed by Madrid (9) and Valencia (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 555 verified decision-maker contacts tracked across these 147 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 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 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.