Company lists · Data refreshed September 2026
Top 25 Water and sanitation companies based in Italy
RevenueBase identified 496 water and sanitation companies headquartered in Italy as of September 2026 and tracks 12,934 professional contacts across them, including 3,686 with verified work emails. Roma is the largest hub.
This list covers water and sanitation 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.
The 25 largest water and sanitation companies based in Italy
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 353 contacts → | ||||
Indirect evidence “Abbanoa è il Gestore Unico del Servizio Idrico Integrato della Sardegna e si occupa di- acquisizione, potabilizzazione, distribuzione dell’acqua potabile- raccolta, depurazione…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 345 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 290 contacts → | ||||
Indirect evidence “Veritas è la società per azioni a capitale interamente pubblico che fornisce servizi ambientali ai 51 Comuni soci (la Città metropolitana di Venezia e parte della provincia di…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 121 contacts → | ||||
Indirect evidence “Siamo un’azienda nata nel 2010 dal progetto comune di Acque SpA, Publiacqua SpA, ACEA SpA, Acquedotto del Fiora SpA, Geal SpA, per integrare e standardizzare i servizi…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 115 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 109 contacts → | ||||
Indirect evidence “RDR S.p.A.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 93 contacts → | ||||
Indirect evidence “Acea Pinerolese Industriale S.p.A, multiutility del torinese modello di efficienza e innovazione del settore pubblico, Acea Pinerolese Industriale Spa è una società a totale…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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, 2026Thanks. The Data Team will review it. | |||||
| 18 | 90 contacts → | ||||
Indirect evidence “Viacqua è una società per azioni a capitale totalmente pubblico.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 75 contacts → | ||||
Partial evidence “Siciliacque is the public-private company providing the bulk water service in Sicily (Italy).” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 74 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 71 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 68 contacts → | ||||
Indirect evidence “acquevenete SpA è il gestore del Servizio Idrico Integrato per 108 Comuni soci delle province di Padova, Rovigo, Vicenza, Verona, Venezia.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 68 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 64 contacts → | ||||
Indirect evidence “Utilitalia è la Federazione che riunisce le Aziende operanti nei servizi pubblici dell'Acqua, dell'Ambiente, dell'Energia Elettrica e del Gas, rappresentandole presso le…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
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 and sanitation 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 and sanitation companies.
- Partial evidence
- Its own public description names part of water and sanitation companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name water and sanitation 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 496 water and sanitation companies based in Italy
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Water and sanitation companies based in Italy at a glance
As of Sep 22, 2026Companies by employee count
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 496 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 and sanitation 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 and sanitation 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 and sanitation 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 and sanitation 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, 3,686 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 water and sanitation 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 and sanitation companies are there based in Italy?
RevenueBase identified 496 water and sanitation 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?
Acquedotto Pugliese SPA, headquartered in Bari, tops this list with the largest team on record.
Which city has the most water and sanitation companies?
Roma leads with 12 headquartered companies, followed by Brescia (7) and Bari (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 3,686 verified decision-maker contacts tracked across these 496 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.
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