Company lists · Data refreshed September 2026

Top 25 Sanitation system design companies based in Italy

Name: Sanitation system design companies based in Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 298 companies tracked

RevenueBase identified 298 sanitation system design companies headquartered in Italy as of September 2026 and tracks 2,873 professional contacts across them, including 699 with verified work emails. Roma is the largest hub.

This list covers sanitation system design companies headquartered in Italy, 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

298Companies

2,873Contacts tracked

699Verified emails

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The 25 largest sanitation system design companies based in Italy

Ranked by team size

Top 25 of 298 sanitation system design companies based in Italy, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sanitation system design 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	Fisia Italimpianti	Partial evidence	Genova, ItalyHQ checked Sep 22, 2026	51-200	362 contacts →
	Partial evidence “Fisia Italimpianti S.p.A, part of Webuild Group (the new group born in 2020 from Salini Impregilo), is a worldwide leader in the sustainable design and execution of water…” Source: RevenueBase Database · checked Sep 22, 2026
2	RDR S.P.A. Società Benefit	Indirect evidence	Torre Del Greco, ItalyHQ checked Sep 22, 2026	201-500	109 contacts →
	Indirect evidence “RDR S.p.A.” Source: RevenueBase Database · checked Sep 22, 2026
3	S.T.A. Società Trattamento Acque SPA	Indirect evidence	Mantova, ItalyHQ checked Sep 22, 2026	51-200	91 contacts →
	Indirect evidence “STA aiuta le Società di Gestione del Servizio Idrico e le Piccole, Medie e Grandi Industrie a progettare, costruire e gestire impianti di trattamento delle acque reflue, primarie…” Source: RevenueBase Database · checked Sep 22, 2026
4	Sodai S.P.A	Indirect evidence	Milano, ItalyHQ checked Sep 22, 2026	51-200	74 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
5	Bernardinello Engineering SPA	Indirect evidence	Cadoneghe, ItalyHQ checked Sep 22, 2026	51-200	53 contacts →
	Indirect evidence “Nata nel 1995 alle porte di Padova, Bernadinello Engineering si è ritagliata una posizione di assoluta eccellenza nel trattamento delle acque e nell’ingegneria di processo in…” Source: RevenueBase Database · checked Sep 22, 2026
6	Cogei S.R.L. Società Benefit	Indirect evidence	Pozzuoli, ItalyHQ checked Sep 22, 2026	51-200	50 contacts →
	Indirect evidence “COGEI \| Costruiamo soluzioni a servizio dell’ambiente COGEI è specializzata nella Progettazione, Costruzione e Gestione di Impianti di Depurazione, combinando esperienza…” Source: RevenueBase Database · checked Sep 22, 2026
7	Co.Par.M. SRL	Indirect evidence	Ferrandina, ItalyHQ checked Sep 22, 2026	51-200	35 contacts →
	Indirect evidence “Waste recovery machinery and facilities Founded by the Aliuzzi family in 1977, Co.par.m.” Source: RevenueBase Database · checked Sep 22, 2026
8	Nexteco S.R.L	Indirect evidence	Thiene, ItalyHQ checked Sep 22, 2026	11-50	34 contacts →
	Indirect evidence “Società di ingegneria specializzata nella progettazione ed erogazione di servizi di ingegneria e management ambientali integrati per il mondo infrastrutturale e industriale.” Source: RevenueBase Database · checked Sep 22, 2026
9	Orange SRL	Indirect evidence	Florence, ItalyHQ checked Sep 22, 2026	11-50	33 contacts →
	Indirect evidence “ORANGE, fondata nel 2007 con sede a Firenze, è un importante operatore nel settore italiano del trattamento delle acque industriali.” Source: RevenueBase Database · checked Sep 22, 2026
10	Simpec	Indirect evidence	Nova Milanese, ItalyHQ checked Sep 22, 2026	51-200	29 contacts →
	Indirect evidence “Simpec is division of STA SpA from 2025/01/01.” Source: RevenueBase Database · checked Sep 22, 2026
11	PPT Tecnologie Ambientali	Indirect evidence	San Giovanni Lupatoto, ItalyHQ checked Sep 22, 2026	11-50	28 contacts →
	Indirect evidence “PPT Tecnologie Ambientali opera in campo ambientale dal 1982 e cura la realizzazione di impianti di trattamento in tutte le sue fasi: dalla studio preliminare alla progettazione e…” Source: RevenueBase Database · checked Sep 22, 2026
12	Torricelli	Indirect evidence	Forlì, ItalyHQ checked Sep 22, 2026	11-50	27 contacts →
	Indirect evidence “Torricelli s.r.l, impianti per l’ecologia, opera su tutto il territorio nazionale ed estero per la progettazione, realizzazione e gestione di impianti in campo ambientale…” Source: RevenueBase Database · checked Sep 22, 2026
13	Protecno SRL	Indirect evidence	Mondolfo, ItalyHQ checked Sep 22, 2026	51-200	27 contacts →
	Indirect evidence “Professional-Technology: these simple words sum up our management strategy.” Source: RevenueBase Database · checked Sep 22, 2026
14	Waternext Group	Indirect evidence	Milano, ItalyHQ checked Sep 22, 2026	11-50	25 contacts →
	Indirect evidence “WaterNext Group is a trailblazing enterprise specializing in engineering, construction, and efficient plant management.” Source: RevenueBase Database · checked Sep 22, 2026
15	Idro Group SRL	Indirect evidence	Seregno, ItalyHQ checked Sep 22, 2026	11-50	20 contacts →
	Indirect evidence “Idro è una società presente sul mercato da più di 40anni, altamente specializzata nel settore ambientale: progetta e realizza impianti per il trattamento delle acque reflue civili…” Source: RevenueBase Database · checked Sep 22, 2026
16	Dorabaltea Depurazione Acque Reflue	Indirect evidence	Arezzo, ItalyHQ checked Sep 22, 2026	11-50	20 contacts →
	Indirect evidence “Dorabaltea® depurazione acque è oggi riconosciuta a livello internazionale come azienda di riferimento nel settore del trattamento delle acque reflue domestiche, assimilate ed…” Source: RevenueBase Database · checked Sep 22, 2026
17	X2 Solutions SRL	Indirect evidence	Mirandola, ItalyHQ checked Sep 22, 2026	11-50	20 contacts →
	Indirect evidence “X2 Solutions was born in 2011 from people coming from the waste water treatment market, with the idea to propose a complete products catalog, in order to better meet the costumers…” Source: RevenueBase Database · checked Sep 22, 2026
18	O.M.C. Collareda S.R.L	Indirect evidence	Schio, ItalyHQ checked Sep 22, 2026	11-50	18 contacts →
	Indirect evidence “O.M.C.” Source: RevenueBase Database · checked Sep 22, 2026
19	Tecnoimpianti AIR & Water Treatment	Indirect evidence	Pozzuolo Martesana, ItalyHQ checked Sep 22, 2026	11-50	18 contacts →
	Indirect evidence “Progettazione, realizzazione e fornitura di impianti di tipo industriale per il trattamento delle acque attraverso rimozione selettiva dei contaminanti, e di impianti per il…” Source: RevenueBase Database · checked Sep 22, 2026
20	Bertolini Ocea Impianti S.R.L	Indirect evidence	Rovereto, ItalyHQ checked Sep 22, 2026	51-200	16 contacts →
	Indirect evidence “Installazione impianti idrici-sanitari (dal 17.04.2013)” Source: RevenueBase Database · checked Sep 22, 2026
21	FICIT	Strong evidence	Cornedo Vicentino, ItalyHQ checked Sep 22, 2026	11-50	15 contacts →
	Strong evidence “We are an engineering company specialising in the design and installation of industrial systems for water treatment and thermal energy generation.” Source: RevenueBase Database · checked Sep 22, 2026
22	Sireg Hydros	Partial evidence	(mb), ItalyHQ checked Sep 22, 2026	1-10	15 contacts →
	Partial evidence “Sireg Hydros, part of the Sireg Group, has over 35 years of experience in the design and manufacture of advanced water treatment plants for primary, process, and wastewater…” Source: RevenueBase Database · checked Sep 22, 2026
23	Panta REI Water Solutions	Partial evidence	Fiesso D’artico, ItalyHQ checked Sep 22, 2026	11-50	14 contacts →
	Partial evidence “Panta Rei Water Solutions is a private company involved in the sector of the design and construction of water and waste water treatment plants.Thanks to a significant experience…” Source: RevenueBase Database · checked Sep 22, 2026
24	Wtec Plants SRL	Indirect evidence	Trani, ItalyHQ checked Sep 22, 2026	11-50	13 contacts →
	Indirect evidence “WTEC Plants S.r.l.” Source: RevenueBase Database · checked Sep 22, 2026
25	Ecosystems SRL	Indirect evidence	Albano Laziale, ItalyHQ checked Sep 22, 2026	11-50	12 contacts →
	Indirect evidence “Established in 1989, ECOSYSTEMS provides local authorities and industries with water treatment solutions and services in many countries, through our subsidiaries, local branches…” 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: sanitation system design 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 sanitation system design companies.
Partial evidence: Its own public description names part of sanitation system design companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sanitation system design 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 298 sanitation system design companies based in Italy

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Sanitation system design companies based in Italy at a glance

As of Sep 22, 2026

24.3%Verified-email coverage

9.6Average contacts per company

11-50Median size (employees)

2.7%Largest-city concentration · Roma

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

104

11-50

142

51-200

201-500

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Italy, so it is reported there. Company counts and contact totals on this page are exact for Italy, over 298 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 sanitation system design 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 Italy whose own description of what they do matches “sanitation system design 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 sanitation system design 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 sanitation system design companies, and records with no verified work email. Companies headquartered outside Italy 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, 699 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 sanitation system design 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 sanitation system design companies are there based in Italy?

RevenueBase identified 298 sanitation system design companies headquartered in Italy 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?

Fisia Italimpianti, headquartered in Genova, tops this list with the largest team on record.

Which city has the most sanitation system design companies?

Roma leads with 8 headquartered companies, followed by Milano (6) and Parma (5).

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 699 verified decision-maker contacts tracked across these 298 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.