Company lists · Data refreshed September 2026

Top 16 Water engineering firms based in Finland

RevenueBase identified 29 water engineering firms headquartered in Finland as of September 2026 and tracks 201 professional contacts across them, including 122 with verified work emails. Lahti is the largest hub.

This list covers water engineering firms 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 21, 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 21, 2026 86% judged on-target in blind review
29Companies
201Contacts tracked
122Verified emails
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The 16 largest water engineering firms based in Finland

Ranked by team size
Top 16 of 29 water engineering firms based in Finland, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to water engineering firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceTurku, FinlandHQ checked Sep 21, 202651-20043 contacts →

Partial 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 21, 2026
2Indirect evidenceVantaa, FinlandHQ checked Sep 21, 202651-20033 contacts →

Indirect evidence

“Oy Lining Ab tarjoaa teknisesti korkealaatuisia laitteita, ratkaisuja ja komponentteja päätoimialanaan vesitekniikka.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceÅbo, FinlandHQ checked Sep 21, 20261-1025 contacts →

Indirect evidence

“We offer a range of services in the field of hydrography and fairway design.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceTampere, FinlandHQ checked Sep 21, 202611-5015 contacts →

Indirect evidence

“Puhdasvesipalvelut - kaivojen puhdistukset, huollot ja desinfioinnit.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceOulu, FinlandHQ checked Sep 21, 202611-5014 contacts →

Indirect evidence

“Maveplan Oy on insinööritoimisto, jonka juuret ovat syvällä suomalaisessa maaperässä.”

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceOulu, FinlandHQ checked Sep 21, 202611-5012 contacts →

Partial evidence

“Slatek Oy specialises in supplying the water management industry with power, instrumentation and automation solutions.”

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidenceHyvinkää, FinlandHQ checked Sep 21, 202651-20011 contacts →

Partial evidence

“RTA-Yhtiöt Oy provides industrial and infrastructure developers with large-scale civil and environmental engineering contracts and specialised works.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceVantaa, FinlandHQ checked Sep 21, 20261-108 contacts →

Indirect evidence

“Watec kehittää ja myy uuden sukupolven vesienkäsittelyjärjestelmiä.”

Source: RevenueBase Database · checked Sep 21, 2026
9Partial evidenceTurku, FinlandHQ checked Sep 21, 20261-105 contacts →

Partial evidence

“We are Law and Water.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidencePunkalaidun, FinlandHQ checked Sep 21, 202611-503 contacts →

Indirect evidence

“Vesirakennus Ojasella on laaja osaaminen esimerkiksi imuruoppauksesta, maanrakennuksesta ja kuljetuspalveluista.”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceKuopio, FinlandHQ checked Sep 21, 20261-103 contacts →

Indirect evidence

“Savo-Karjalan Vesi- ja Ympäristösuunnittelu Oy (SKVY) on verkostoitunut vesihuolto, yhdyskunta- ja ympäristösuunnitteluun erikoistunut insinööritoimisto Itä-Suomen alueella.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceUusikaupunki, FinlandHQ checked Sep 21, 202611-503 contacts →

Indirect evidence

“Maisemarakennus Viitanen Oy on vankan ja monipuolisen kokemuksen omaava maanrakennusyritys.”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial evidenceSeinäjoki, FinlandHQ checked Sep 21, 20261-102 contacts →

Partial evidence

“Help-Tec provides services for civil and water construction, especially for water supply, energy, and industrial construction and contracting needs.”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceKuopio, FinlandHQ checked Sep 21, 20261-101 contacts →

Partial evidence

“Vesi-Eko Oy Water-Eco Ltd is a company based out of Yrittäjäntie 12, KUOPIO, Finland.”

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceLahti, FinlandHQ checked Sep 21, 20261-101 contacts →

Partial evidence

“Insinööritoimisto Gradientti Oy provides environmental engineering consultancy services.”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceEspoo, FinlandHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026

Showing 16 of 29 water engineering firms based in Finland

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Water engineering firms based in Finland at a glance

As of Sep 21, 2026
60.7%Verified-email coverage
6.9Average contacts per company
1-10Median size (employees)
10.3%Largest-city concentration · Lahti
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
9
51-200
3

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 29 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 engineering firms, 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 “water engineering firms”. 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 engineering firms), 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 engineering firms, 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, 122 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 21, 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 engineering firms, 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 engineering firms are there based in Finland?

RevenueBase identified 29 water engineering firms 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?

Flootech, headquartered in Turku, tops this list with the largest team on record.

Which city has the most water engineering firms?

Lahti leads with 3 headquartered companies, followed by Oulu (3) and Helsinki (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 122 verified decision-maker contacts tracked across these 29 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 21, 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.