Company lists · Data refreshed September 2026

Top 25 Wastewater treatment biotechnology companies based in Finland

Name: Wastewater treatment biotechnology companies based in Finland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 42 companies tracked

RevenueBase identified 42 wastewater treatment biotechnology companies headquartered in Finland as of September 2026 and tracks 667 professional contacts across them, including 386 with verified work emails. Helsinki is the largest hub.

This list covers wastewater treatment biotechnology companies headquartered in Finland, 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

42Companies

667Contacts tracked

386Verified emails

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The 25 largest wastewater treatment biotechnology companies based in Finland

Ranked by team size

Top 25 of 42 wastewater treatment biotechnology companies based in Finland, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to wastewater treatment biotechnology 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	Evac Group	Partial evidence	Espoo, FinlandHQ checked Sep 19, 2026	501-1,000	319 contacts →
	Partial evidence “Evac Group is a global leader in integrated water, waste and wastewater management solutions, as well as corrosion protection and marine growth prevention systems, for the marine…” Source: RevenueBase Database · checked Sep 19, 2026
2	Flootech	Strong evidence	Turku, FinlandHQ checked Sep 19, 2026	51-200	43 contacts →
	Strong evidence “Flootech Flootech’s vision is creating value by cleaning water through innovation, creativity and expertise in clean water, process water, wastewater treatment and water reuse and…” Source: RevenueBase Database · checked Sep 19, 2026
3	Prominent Finland	Indirect evidence	Helsinki, FinlandHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Kehitämme annostelutekniikan ja vedenkäsittelyn ratkaisuja, jotka säästävät luontoa, ovat taloudellisia ja tukevat kestävää kehitystä.” Source: RevenueBase Database · checked Sep 19, 2026
4	Owatec Group OY	Partial evidence	Oulu, FinlandHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “We are here to turn wastewater into a resource, helping you to cut you businesses costs, optimize processes, and protect the environment with achievable, sustainable water…” Source: RevenueBase Database · checked Sep 19, 2026
5	Teollisuuden Vesi OY	Partial evidence	Mäntsälä, FinlandHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “Water treatment is a fundamental concern around the world due to the lack of good quality drinking water, and growing environmental concern.” Source: RevenueBase Database · checked Sep 19, 2026
6	Dewaco LTD Dewa Sludge & Water Treatment Equipment	Strong evidence	Laitila, FinlandHQ checked Sep 19, 2026	11-50	15 contacts →
	Strong evidence “Dewaco Ltd offers equipment under the DEWA brand for water, wastewater and sludge treatment, as well as for the drying of various biomasses.” Source: RevenueBase Database · checked Sep 19, 2026
7	Operon Group OY	Partial evidence	Espoo, FinlandHQ checked Sep 19, 2026	51-200	13 contacts →
	Partial evidence “Operon is a leading solution provider and service company for water and sludge treatment.” Source: RevenueBase Database · checked Sep 19, 2026
8	Epse OY LTD	Strong evidence	Ylöjärvi, FinlandHQ checked Sep 19, 2026	11-50	13 contacts →
	Strong evidence “EPSE Oy is a Finnish company specializing in the treatment of industrial and mining process and wastewater containing soluble metals.” Source: RevenueBase Database · checked Sep 19, 2026
9	Finnchain	Strong evidence	Rauma, FinlandHQ checked Sep 19, 2026	11-50	12 contacts →
	Strong evidence “Finnchain Oy is the technology leader in chain scraper systems for wastewater treatment.” Source: RevenueBase Database · checked Sep 19, 2026
10	Tampereen Seudun Keskuspuhdistamo OY	Indirect evidence	Tampere, FinlandHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Tampereelle, Sulkavuoreen toteutetaan uusimpia puhdistustekniikoita hyödyntävä jätevedenpuhdistamo kallion sisään.” Source: RevenueBase Database · checked Sep 19, 2026
11	Protectpipe	Indirect evidence	Helsinki, FinlandHQ checked Sep 19, 2026	1-10	11 contacts →
	Indirect evidence “Luonnollinen ratkaisu viemäriputkien ongelmien ennaltaehkäisyyn ProtectPipe on suomalainen mikrobiteknologiayritys, joka tuottaa innovatiivista ratkaisua, joka poistaa orgaanista…” Source: RevenueBase Database · checked Sep 19, 2026
12	West Invest Group	Indirect evidence	Kerava, FinlandHQ checked Sep 19, 2026	201-500	10 contacts →
	Indirect evidence “WEST Invest Group on vahvasti kasvava perhe- ja konserniyhtiö.” Source: RevenueBase Database · checked Sep 19, 2026
13	Watec Consulting OY	Indirect evidence	Vantaa, FinlandHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “Watec kehittää ja myy uuden sukupolven vesienkäsittelyjärjestelmiä.” Source: RevenueBase Database · checked Sep 19, 2026
14	Vestelli	Indirect evidence	Tampere, FinlandHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Vestelli on haja-asutusalueiden jätevesijärjestelmien tuotekehitykseen ja valmistamiseen erikoistunut yritys.” Source: RevenueBase Database · checked Sep 19, 2026
15	Smartpipe	Indirect evidence	Vantaa, FinlandHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “We are a Finnish clean technology company, actively engaged in both marine and land-based industries.” Source: RevenueBase Database · checked Sep 19, 2026
16	Sansox	Partial evidence	Lahti, FinlandHQ checked Sep 19, 2026	1-10	6 contacts →
	Partial evidence “SansOx ‘s innovative solutions has required the rethinking of water treatment.” Source: RevenueBase Database · checked Sep 19, 2026
17	Toihan OY	Strong evidence	Helsinki, FinlandHQ checked Sep 19, 2026	1-10	5 contacts →
	Strong evidence “Toihan is an expert organization specialized in pulp and paper industry wastewaters and their treatment.” Source: RevenueBase Database · checked Sep 19, 2026
18	Flocon Technologies	Strong evidence	Espoo, FinlandHQ checked Sep 19, 2026	1-10	5 contacts →
	Strong evidence “Flocon water purification technology offers solutions for process industry as well as for the treatment of municipal wastewater and agricultural wastewater.” Source: RevenueBase Database · checked Sep 19, 2026
19	Solid Water OY	Partial evidence	Ilmajoki, FinlandHQ checked Sep 19, 2026	11-50	4 contacts →
	Partial evidence “Solid Water represents the high quality Finnish water treatment Cleantech expertise, whose products are made from the best raw materials using gained experience-based know-how…” Source: RevenueBase Database · checked Sep 19, 2026
20	Strongflow OY	Partial evidence	Kaarina, FinlandHQ checked Sep 19, 2026	11-50	4 contacts →
	Partial evidence “We provide intelligent water treatment and industrial automation systems.” Source: RevenueBase Database · checked Sep 19, 2026
21	Fenno Water LTD OY	Partial evidence	Seinäjoki, FinlandHQ checked Sep 19, 2026	11-50	4 contacts →
	Partial evidence “Fenno Water Ltd Oy (FW) is focused on water and waste water treatment processes and designing & manufacturing of treatment plants.” Source: RevenueBase Database · checked Sep 19, 2026
22	Redono OY	Partial evidence	Lohja, FinlandHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “We are on a mission to revolutionize the industrial industry with our innovative business model and biotechnological platform.” Source: RevenueBase Database · checked Sep 19, 2026
23	Water4you	Indirect evidence	Turku, FinlandHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “Puhdas vesi on ydinosaamistamme.” Source: RevenueBase Database · checked Sep 19, 2026
24	Merdec OY	Strong evidence	Rauma, FinlandHQ checked Sep 19, 2026	1-10	1 contacts →
	Strong evidence “With three decades of experience in water and wastewater treatment equipment design and manufacturing, our team is equipped with the tools and product knowledge to offer the best…” Source: RevenueBase Database · checked Sep 19, 2026
25	Eko-Instrumentti OY	Indirect evidence	Järvenpää, FinlandHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Eko-Instrumentti Oy on vuonna 1995 perustettu ympäristötekninen urakoitsija.” 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: wastewater treatment biotechnology 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 wastewater treatment biotechnology companies.
Partial evidence: Its own public description names part of wastewater treatment biotechnology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater treatment biotechnology 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 42 wastewater treatment biotechnology companies based in Finland

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Wastewater treatment biotechnology companies based in Finland at a glance

As of Sep 19, 2026

57.9%Verified-email coverage

15.9Average contacts per company

1-10Median size (employees)

14.3%Largest-city concentration · Helsinki

Sep 19, 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 Finland, so it is reported there. Company counts and contact totals on this page are exact for Finland, over 42 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 treatment biotechnology 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 Finland whose own description of what they do matches “wastewater treatment biotechnology 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 wastewater treatment biotechnology 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 wastewater treatment biotechnology companies, and records with no verified work email. Companies headquartered outside Finland 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 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 wastewater treatment biotechnology 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 wastewater treatment biotechnology companies are there based in Finland?

RevenueBase identified 42 wastewater treatment biotechnology companies headquartered in Finland 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?

Evac Group, headquartered in Espoo, tops this list with the largest team on record.

Which city has the most wastewater treatment biotechnology companies?

Helsinki leads with 6 headquartered companies, followed by Espoo (5) and Kuopio (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 42 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.