Company lists · Data refreshed September 2026

Top 25 Water companies based in Italy

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 549 companies tracked

RevenueBase identified 549 water companies headquartered in Italy as of September 2026 and tracks 14,331 professional contacts across them, including 5,289 with verified work emails. Roma is the largest hub.

This list covers water 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 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

549Companies

14,331Contacts tracked

5,289Verified emails

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The 25 largest water companies based in Italy

Ranked by team size

Top 25 of 549 water companies based in Italy, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to water 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	Gruppo Hera	Indirect evidence	Bologna, ItalyHQ checked Sep 19, 2026	5,001-10,000	2,944 contacts →
	Indirect evidence “The Hera Group is the first Italian coalescence of municipally owned companies that (adopting a multi-business approach oriented to the creation of shared value for all…” Source: RevenueBase Database · checked Sep 19, 2026
2	Acquedotto Pugliese SPA	Indirect evidence	Bari, ItalyHQ checked Sep 19, 2026	1,001-5,000	814 contacts →
	Indirect evidence “Da oltre un secolo portiamo acqua di qualità, un bene prezioso per la vita e lo sviluppo del territorio, a milioni di persone.” Source: RevenueBase Database · checked Sep 19, 2026
3	Culligan Italiana S.P.A	Indirect evidence	Bologna, ItalyHQ checked Sep 19, 2026	201-500	489 contacts →
	Indirect evidence “Culligan Italiana è in grado di offrire la soluzione ideale per ogni tipologia di trattamento acqua: piccoli impianti ad uso domestico, erogatori d'acqua per uffici e ristoranti…” Source: RevenueBase Database · checked Sep 19, 2026
4	Gruppo CAP	Indirect evidence	Milan, ItalyHQ checked Sep 19, 2026	501-1,000	401 contacts →
	Indirect evidence “Gruppo CAP è la green utility pubblica che, già gestore del servizio idrico integrato della Città metropolitana di Milano, si è evoluta in una delle principali monoutility…” Source: RevenueBase Database · checked Sep 19, 2026
5	Ireti S.P.A	Indirect evidence	Genova, ItalyHQ checked Sep 19, 2026	201-500	368 contacts →
	Indirect evidence “IRETI è la società del Gruppo Iren che gestisce in modo integrato e capillare sul territorio nazionale la distribuzione di energia elettrica, gas e acqua, cercando ogni giorno con…” Source: RevenueBase Database · checked Sep 19, 2026
6	Fisia Italimpianti	Strong evidence	Genova, ItalyHQ checked Sep 19, 2026	51-200	362 contacts →
	Strong 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 19, 2026
7	Gruppo TEA	Indirect evidence	Mantova, ItalyHQ checked Sep 19, 2026	501-1,000	210 contacts →
	Indirect evidence “Nel 1998 l’Azienda Servizi Municipalizzati di Mantova, costituita nel 1908 dalla precedente Officina del Gas, viene trasformata in Società per Azioni e diventa Tea, Territorio…” Source: RevenueBase Database · checked Sep 19, 2026
8	Alfa Varese Acquedotto Fognatura Depurazione	Indirect evidence	Gallarate, ItalyHQ checked Sep 19, 2026	201-500	197 contacts →
	Indirect evidence “Gestiamo il Servizio Idrico Integrato di 144 comuni della Provincia di Varese In particolare, ci occupiamo di tutto il ciclo dell’acqua: a partire dall’approvvigionamento e dalla…” Source: RevenueBase Database · checked Sep 19, 2026
9	Unidro	Strong evidence	Sesto San Giovanni, ItalyHQ checked Sep 19, 2026	51-200	126 contacts →
	Strong evidence “Established in 1971, Unidro is a global player in water, wastewater and utilities related process technology for the industrial markets.” Source: RevenueBase Database · checked Sep 19, 2026
10	Brianzacque	Indirect evidence	Monza, ItalyHQ checked Sep 19, 2026	201-500	124 contacts →
	Indirect evidence “BrianzAcque è l'azienda pubblica che gestisce industrialmente il Servizio Idrico Integrato nella Provincia di Monza e della Brianza.” Source: RevenueBase Database · checked Sep 19, 2026
11	Acque Bresciane S.R.L. SB	Indirect evidence	Brescia, ItalyHQ checked Sep 19, 2026	201-500	119 contacts →
	Indirect evidence “Acque Bresciane Srl SB è la Società Benefit che si occupa della gestione del Servizio Idrico Integrato, ad oggi per abitanti di 114 Comuni in provincia di Brescia.” Source: RevenueBase Database · checked Sep 19, 2026
12	Acqualatina S.P.A	Indirect evidence	Latina, ItalyHQ checked Sep 19, 2026	201-500	115 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
13	BLU Service	Indirect evidence	Milano, ItalyHQ checked Sep 19, 2026	51-200	115 contacts →
	Indirect evidence “SIAMO GLI SPECIALISTI DELL'ACQUA!” Source: RevenueBase Database · checked Sep 19, 2026
14	RDR S.P.A. Società Benefit	Indirect evidence	Torre Del Greco, ItalyHQ checked Sep 19, 2026	201-500	109 contacts →
	Indirect evidence “RDR S.p.A.” Source: RevenueBase Database · checked Sep 19, 2026
15	Sgam SPA Lete E Sorgesana	Indirect evidence	Rome, ItalyHQ checked Sep 19, 2026	51-200	108 contacts →
	Indirect evidence “Lete, ottima mossa per le tue ossa.” Source: RevenueBase Database · checked Sep 19, 2026
16	Uniacque	Indirect evidence	Bergamo, ItalyHQ checked Sep 19, 2026	201-500	105 contacts →
	Indirect evidence “UNIACQUE Spa è una società totalmente pubblica per la gestione in house del servizio idrico integrato di oltre 200 comuni della Provincia di Bergamo.” Source: RevenueBase Database · checked Sep 19, 2026
17	Simam S.P.A	Indirect evidence	Senigallia, ItalyHQ checked Sep 19, 2026	51-200	96 contacts →
	Indirect evidence “SIMAM con oltre 180 tecnici, più della metà ingegneri, qualificati e di lunga esperienza operativa, è presente nei settori: trattamento acque, global service, risanamento e…” Source: RevenueBase Database · checked Sep 19, 2026
18	S.T.A. Società Trattamento Acque SPA	Indirect evidence	Mantova, ItalyHQ checked Sep 19, 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 19, 2026
19	Viacqua	Indirect evidence	Vicenza, ItalyHQ checked Sep 19, 2026	201-500	90 contacts →
	Indirect evidence “Viacqua è una società per azioni a capitale totalmente pubblico.” Source: RevenueBase Database · checked Sep 19, 2026
20	Lario Reti Holding	Indirect evidence	Lecco, ItalyHQ checked Sep 19, 2026	201-500	85 contacts →
	Indirect evidence “Lario Reti Holding S.p.A, società a capitale interamente pubblico partecipata dagli Enti Locali, è il gestore del Servizio Idrico Integrato per tutti i Comuni della Provincia di…” Source: RevenueBase Database · checked Sep 19, 2026
21	Siciliacque SPA	Strong evidence	Palermo, ItalyHQ checked Sep 19, 2026	51-200	75 contacts →
	Strong evidence “Siciliacque is the public-private company providing the bulk water service in Sicily (Italy).” Source: RevenueBase Database · checked Sep 19, 2026
22	Sodai S.P.A	Indirect evidence	Milano, ItalyHQ checked Sep 19, 2026	51-200	74 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
23	Atlas Filtri	Strong evidence	Limena, ItalyHQ checked Sep 19, 2026	51-200	71 contacts →
	Strong evidence “Atlas Filtri is a dynamic Italian company: designing, developing, and producing components for filtration systems and equipment for water treatment applicable to domestic and…” Source: RevenueBase Database · checked Sep 19, 2026
24	Padania Acque S.P.A	Indirect evidence	Cremona, ItalyHQ checked Sep 19, 2026	51-200	71 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	Gaia S.P.A	Indirect evidence	Marina Di Pietrasanta (lucca), ItalyHQ checked Sep 19, 2026	501-1,000	71 contacts →
	Indirect evidence 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: water 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 water companies.
Partial evidence: Its own public description names part of water companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water 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 549 water companies based in Italy

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Water companies based in Italy at a glance

As of Sep 19, 2026

36.9%Verified-email coverage

26.1Average contacts per company

11-50Median size (employees)

2.0%Largest-city concentration · Roma

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

178

11-50

204

51-200

111

201-500

501-1,000

1,001-5,000

5,001-10,000

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 549 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 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 “water 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 water 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 water 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, 5,289 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 water 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 water companies are there based in Italy?

RevenueBase identified 549 water 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?

Gruppo Hera, headquartered in Bologna, tops this list with the largest team on record.

Which city has the most water companies?

Roma leads with 11 headquartered companies, followed by Milano (9) and Milano Mi (8).

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 5,289 verified decision-maker contacts tracked across these 549 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.