Company lists · Data refreshed September 2026

Top 19 Municipal wastewater treatment contractors based in Portugal

Name: Municipal wastewater treatment contractors based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 44 companies tracked

RevenueBase identified 44 municipal wastewater treatment contractors headquartered in Portugal as of September 2026 and tracks 1,372 professional contacts across them, including 386 with verified work emails. Lisboa is the largest hub.

This list covers municipal wastewater treatment contractors headquartered in Portugal, 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 17, 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 17, 2026 86% judged on-target in blind review

44Companies

1,372Contacts tracked

386Verified emails

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The 19 largest municipal wastewater treatment contractors based in Portugal

Ranked by team size

Top 19 of 44 municipal wastewater treatment contractors based in Portugal, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to municipal wastewater treatment contractors: 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	AGS Water Solutions	Indirect evidence	Paço De Arcos, PortugalHQ checked Sep 17, 2026	51-200	502 contacts →
	Indirect evidence “AGS – Administração e Gestão de Sistemas de Salubridade, SA focuses on the preservation of the environment, acting throughout the entire water cycle.” Source: RevenueBase Database · checked Sep 17, 2026
2	Águas DO Norte, S.A	Indirect evidence	Vila Real, PortugalHQ checked Sep 17, 2026	501-1,000	202 contacts →
	Indirect evidence “A Águas do Norte, S.A.” Source: RevenueBase Database · checked Sep 17, 2026
3	Smas DE Almada	Partial evidence	Pragal - Almada, PortugalHQ checked Sep 17, 2026	201-500	141 contacts →
	Partial evidence “Os SMAS - Serviços Municipalizados de Água e Saneamento do Município de Almada, são um serviço público de interesse local.” Source: RevenueBase Database · checked Sep 17, 2026
4	CTGA	Indirect evidence	Coimbra, PortugalHQ checked Sep 17, 2026	51-200	90 contacts →
	Indirect evidence “A CTGA assume-se como uma empresa especializada na elaboração de estudos e projetos nas áreas das Engenharias Hidráulica, Sanitária e Ambiental, bem como na exploração e…” Source: RevenueBase Database · checked Sep 17, 2026
5	Bondalti Water Enkrott	Indirect evidence	Abrunheira, PortugalHQ checked Sep 17, 2026	201-500	78 contacts →
	Indirect evidence “At Enkrott we believe in science and technology for the development of solutions aiming an efficient water use.” Source: RevenueBase Database · checked Sep 17, 2026
6	AGERE	Partial evidence	Braga, PortugalHQ checked Sep 17, 2026	501-1,000	57 contacts →
	Partial evidence “A Agere- Empresa de águas, Efluentes e Resíduos de Braga, EM surgiu da transformação dos Serviços Municipalizados de Águas e Saneamento em Empresa Pública Municipal, em Em 2005, o…” Source: RevenueBase Database · checked Sep 17, 2026
7	NBS Water Engineering	Indirect evidence	Aveiro, PortugalHQ checked Sep 17, 2026	11-50	26 contacts →
	Indirect evidence “A NBS Water Engineering é uma plataforma integrada de engenharia da água dedicada ao desenvolvimento de soluções sustentáveis para o setor hídrico e ambiental.” Source: RevenueBase Database · checked Sep 17, 2026
8	Simdouro	Indirect evidence	Vila Nova De Gaia, PortugalHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “Na SIMDOURO, S.A, somos especialistas no tratamento e gestão de águas residuais urbanas e servimos atualmente mais de 519 mil habitantes numa vasta área de 1300 km², que abrange 7…” Source: RevenueBase Database · checked Sep 17, 2026
9	ADG Águas DE Gondomar SA	Indirect evidence	Gondomar, PortugalHQ checked Sep 17, 2026	51-200	19 contacts →
	Indirect evidence “A Águas de Gondomar assegura o fornecimento de água para consumo público e o tratamento de águas residuais no concelho, cumprindo as exigências de um regular, contínuo e eficiente…” Source: RevenueBase Database · checked Sep 17, 2026
10	H2tec	Indirect evidence	Montemor-o-velho, PortugalHQ checked Sep 17, 2026	51-200	19 contacts →
	Indirect evidence “Projetamos, construímos e mantemos soluções de tratamento, reaproveitamento e abastecimento de Água ajustadas às necessidades de cada cliente.” Source: RevenueBase Database · checked Sep 17, 2026
11	Vimágua	Indirect evidence	Guimarães, PortugalHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
12	Bianna Portugal	Indirect evidence	Carnaxide, PortugalHQ checked Sep 17, 2026	1-10	13 contacts →
	Indirect evidence “Somos fabricantes de equipamentos, concebemos e construímos linhas de tratamento de resíduos e oferecemos um conjunto diversificado de projetos “chave na mão”.” Source: RevenueBase Database · checked Sep 17, 2026
13	Adventech	Indirect evidence	Sao Joao Da Madeira, PortugalHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “Adventech is a leading EPC (Engineering, Procurement, and Construction) and O&M (Operation & Maintenance) company specializing in advanced environmental technologies.” Source: RevenueBase Database · checked Sep 17, 2026
14	Fduarte, LDA	Indirect evidence	Castelo Da Maia, PortugalHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “A FDuarte Lda, fundada em 1982 pelo Eng.º António Rocha Duarte, rapidamente se posicionou no mercado, estabelecendo diversas parcerias de trabalho com as mais prestigiadas…” Source: RevenueBase Database · checked Sep 17, 2026
15	Aquaexpert	Indirect evidence	Palmela, PortugalHQ checked Sep 17, 2026	1-10	8 contacts →
	Indirect evidence “A AquaExpert W & PS tem vindo a desenvolver e a afirmar-se no mercado em áreas que são fundamentais para os nossos clientes como sejam- Concepção, Fornecimento Operação de…” Source: RevenueBase Database · checked Sep 17, 2026
16	Albombas	Indirect evidence	Almancil, PortugalHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “Fundada em 1981, a Albombas surgiu com o objectivo de preencher uma lacuna existente no sector dos Sistemas de Bombagem, alicerçando o seu desempenho quantitativo e qualitativo…” Source: RevenueBase Database · checked Sep 17, 2026
17	Aluline Portugal	Indirect evidence	Seixal, PortugalHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “A Aluline Portugal (pertencendo ao Grupo inglês ALULINE Group) é uma referência no mercado do fornecimento de soluções de pré tratamento de águas residuais e de tecnologias de…” Source: RevenueBase Database · checked Sep 17, 2026
18	Acquafloc, LDA	Indirect evidence	Seia, PortugalHQ checked Sep 17, 2026	1-10	1 contacts →
	Indirect evidence “A Acquafloc é uma empresa líder de mercado com mais de 10 anos de experiência no tratamento de águas residuais e industriais.” Source: RevenueBase Database · checked Sep 17, 2026
19	Hidroprocessos	Indirect evidence	Ramada, PortugalHQ checked Sep 17, 2026	1-10	1 contacts →
	Indirect evidence “A HIDROPROCESSOS é uma empresa de consultoria e engenharia de infraestruturas, com maior especialização na área do ambiente, em particular, na vertente de engenharia sanitária.” Source: RevenueBase Database · checked Sep 17, 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: municipal wastewater treatment contractors. 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 municipal wastewater treatment contractors.
Partial evidence: Its own public description names part of municipal wastewater treatment contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name municipal wastewater treatment contractors. 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 19 of 44 municipal wastewater treatment contractors based in Portugal

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Municipal wastewater treatment contractors based in Portugal at a glance

As of Sep 17, 2026

28.1%Verified-email coverage

31.2Average contacts per company

11-50Median size (employees)

6.8%Largest-city concentration · Lisboa

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Portugal, so it is reported there. Company counts and contact totals on this page are exact for Portugal, over 44 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 municipal wastewater treatment contractors, 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 Portugal whose own description of what they do matches “municipal wastewater treatment contractors”. 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 municipal wastewater treatment contractors), 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 municipal wastewater treatment contractors, and records with no verified work email. Companies headquartered outside Portugal 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, 386 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 17, 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 municipal wastewater treatment contractors, 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 municipal wastewater treatment contractors are there based in Portugal?

RevenueBase identified 44 municipal wastewater treatment contractors headquartered in Portugal 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?

AGS Water Solutions, headquartered in Oeiras, tops this list with the largest team on record.

Which city has the most municipal wastewater treatment contractors?

Lisboa leads with 3 headquartered companies, followed by Aveiro (2) and Guimaraes (2).

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 386 verified decision-maker contacts tracked across these 44 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 17, 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.