Company lists · Data refreshed September 2026

Top 21 Sewage treatment plant operators based in Portugal

Name: Sewage treatment plant operators based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 40 companies tracked

RevenueBase identified 40 sewage treatment plant operators headquartered in Portugal as of September 2026 and tracks 823 professional contacts across them, including 230 with verified work emails. Loures is the largest hub.

This list covers sewage treatment plant operators 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 22, 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 22, 2026 86% judged on-target in blind review

40Companies

823Contacts tracked

230Verified emails

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The 21 largest sewage treatment plant operators based in Portugal

Ranked by team size

Top 21 of 40 sewage treatment plant operators based in Portugal, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sewage treatment plant operators: 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	Tratolixo	Indirect evidence	Cascais, PortugalHQ checked Sep 22, 2026	201-500	91 contacts →
	Indirect evidence “TRATOLIXO EIM SA is a Municipal Solid Waste Management Company that provides comprehensive waste and environmental services in the municipalities of Cascais, Mafra, Oeiras and…” Source: RevenueBase Database · checked Sep 22, 2026
2	Grupo Blueotter	Indirect evidence	Sacavém, PortugalHQ checked Sep 22, 2026	501-1,000	90 contacts →
	Indirect evidence “A BLUEOTTER presta serviços ambientais de excelência aos seus clientes e parceiros através das nossas unidades de valorização e tratamento de resíduos não perigosos, atuando com…” Source: RevenueBase Database · checked Sep 22, 2026
3	Bondalti Water Enkrott	Indirect evidence	Abrunheira, PortugalHQ checked Sep 22, 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 22, 2026
4	AGERE	Indirect evidence	Braga, PortugalHQ checked Sep 22, 2026	501-1,000	57 contacts →
	Indirect 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 22, 2026
5	Resulima	Indirect evidence	Vila Nova De Anha, PortugalHQ checked Sep 22, 2026	51-200	34 contacts →
	Indirect evidence “A Resulima é uma empresa de referência no setor ambiental e no tratamento e valorização de resíduos na sua área de abrangência.” Source: RevenueBase Database · checked Sep 22, 2026
6	Eco-Oil	Partial evidence	Mitrena, PortugalHQ checked Sep 22, 2026	11-50	27 contacts →
	Partial evidence “Eco-Oil – Treatment of Contaminated Water, SA, is a Portuguese company with the largest capacity for treating water contaminated with hydrocarbons.” Source: RevenueBase Database · checked Sep 22, 2026
7	Ventilaqua	Indirect evidence	Coimbra, PortugalHQ checked Sep 22, 2026	11-50	24 contacts →
	Indirect evidence “KNOWLEDGE to protect your FUTURE.” Source: RevenueBase Database · checked Sep 22, 2026
8	Simdouro	Indirect evidence	Vila Nova De Gaia, PortugalHQ checked Sep 22, 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 22, 2026
9	Bianna Portugal	Indirect evidence	Carnaxide, PortugalHQ checked Sep 22, 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 22, 2026
10	Adventech	Indirect evidence	Sao Joao Da Madeira, PortugalHQ checked Sep 22, 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 22, 2026
11	Resialentejo, E.I.M	Indirect evidence	Beja, PortugalHQ checked Sep 22, 2026	51-200	8 contacts →
	Indirect evidence “A RESIALENTEJO dá destino final aos resíduos indiferenciados (resíduos que não são separados) provenientes da recolha municipal e aos resíduos urbanos recicláveis dos concelhos de…” Source: RevenueBase Database · checked Sep 22, 2026
12	Fduarte, LDA	Indirect evidence	Castelo Da Maia, PortugalHQ checked Sep 22, 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 22, 2026
13	Ambiágua	Indirect evidence	Vila Nova De Famalicão, PortugalHQ checked Sep 22, 2026	11-50	8 contacts →
	Indirect evidence “Criada em 2003, a Ambiágua tornou-se parte integrante do Grupo ACA em 2009.” Source: RevenueBase Database · checked Sep 22, 2026
14	Aquaexpert	Indirect evidence	Palmela, PortugalHQ checked Sep 22, 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 22, 2026
15	Ecoserviços Group	Indirect evidence	Montijo, PortugalHQ checked Sep 22, 2026	51-200	7 contacts →
	Indirect evidence “The ECOSERVIÇOS GROUP exists since 1983 with the establishment of the company that gave it its name, which is currently the holding company.” Source: RevenueBase Database · checked Sep 22, 2026
16	Aluline Portugal	Indirect evidence	Seixal, PortugalHQ checked Sep 22, 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 22, 2026
17	Antiga Casa Pompeu	Indirect evidence	Vila Nova De Gaia, PortugalHQ checked Sep 22, 2026	11-50	6 contacts →
	Indirect evidence “A Antiga Casa Pompeu (também reconhecida como Carlos Ferreira da Silva & Filhos, Lda.) é uma empresa de referência na área ambiental, que está no mercado há mais de 100 anos, com…” Source: RevenueBase Database · checked Sep 22, 2026
18	Ambitrevo Becomes Veolia	Indirect evidence	Alcochete, PortugalHQ checked Sep 22, 2026	11-50	6 contacts →
	Indirect evidence “A empresa dedica-se à gestão de resíduos, em particular, de resíduos orgânicos e minerais, que constituam mais-valias para o sector agrícola.” Source: RevenueBase Database · checked Sep 22, 2026
19	Moinhos Água E Ambiente	Indirect evidence	Santo Tirso, PortugalHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “Tratamento de Água, Águas Residuais e Reutilização” Source: RevenueBase Database · checked Sep 22, 2026
20	Acquafloc, LDA	Indirect evidence	Seia, PortugalHQ checked Sep 22, 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 22, 2026
21	wave.consulting	Indirect evidence	Loures, PortugalHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “WAVE is a service and solutions provider for the environmental sector.” Source: RevenueBase Database · checked Sep 22, 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: sewage treatment plant operators. 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 sewage treatment plant operators.
Partial evidence: Its own public description names part of sewage treatment plant operators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sewage treatment plant operators. 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 21 of 40 sewage treatment plant operators based in Portugal

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Sewage treatment plant operators based in Portugal at a glance

As of Sep 22, 2026

27.9%Verified-email coverage

20.6Average contacts per company

11-50Median size (employees)

5.0%Largest-city concentration · Loures

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 40 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 sewage treatment plant operators, 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 “sewage treatment plant operators”. 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 sewage treatment plant operators), 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 sewage treatment plant operators, 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, 230 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 22, 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 sewage treatment plant operators, 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 sewage treatment plant operators are there based in Portugal?

RevenueBase identified 40 sewage treatment plant operators 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?

Tratolixo, headquartered in Cascais, tops this list with the largest team on record.

Which city has the most sewage treatment plant operators?

Loures leads with 2 headquartered companies, followed by Vila Nova De Famalicao (2) and Afonsoeiro (1).

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 230 verified decision-maker contacts tracked across these 40 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 22, 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.