Company lists · Data refreshed September 2026

Top 10 Stormwater management system contractors based in Italy

RevenueBase identified 37 stormwater management system contractors headquartered in Italy as of September 2026 and tracks 265 professional contacts across them, including 105 with verified work emails. Bologna is the largest hub.

This list covers stormwater management system contractors 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 18, 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 18, 2026 86% judged on-target in blind review
37Companies
265Contacts tracked
105Verified emails
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The 10 largest stormwater management system contractors based in Italy

Ranked by team size
Top 10 of 37 stormwater management system contractors based in Italy, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to stormwater management system contractors: 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
1Indirect evidenceMantova, ItalyHQ checked Sep 18, 202651-20091 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 18, 2026
2Indirect evidenceForlì, ItalyHQ checked Sep 18, 202611-5027 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 18, 2026
3Indirect evidenceSeregno, ItalyHQ checked Sep 18, 202611-5020 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 18, 2026
4Strong evidenceVenezia, ItalyHQ checked Sep 18, 202611-5010 contacts →

Strong evidence

“SWI Group | Over 25 Years of Expertise in Environment, Health & Safety Specialized in Turn-Key Water Management Solutions | EPC Contractor Since 2004, SWI Group has been driven by…”

Source: RevenueBase Database · checked Sep 18, 2026
5Indirect evidenceCalderara Di Reno, ItalyHQ checked Sep 18, 20261-108 contacts →

Indirect evidence

“KESSEL has stood for innovative and safe drainage technology like no other company since 1963.”

Source: RevenueBase Database · checked Sep 18, 2026
6Indirect evidenceCosta Di Rovigo, ItalyHQ checked Sep 18, 202611-508 contacts →

Indirect evidence

“Twincad S.r.l.”

Source: RevenueBase Database · checked Sep 18, 2026
7Indirect evidenceChiari, ItalyHQ checked Sep 18, 202611-508 contacts →

Indirect evidence

“Since its founding in 1988, ITALPLANT S.r.l.”

Source: RevenueBase Database · checked Sep 18, 2026
8Indirect evidenceCalderara Di Reno, ItalyHQ checked Sep 18, 20261-106 contacts →

Indirect evidence

“Azienda specializzata nella realizzazione di fognature per scarico acque bianche e nere sia per privati che per opere pubbliche anche da realizzare in galleria.”

Source: RevenueBase Database · checked Sep 18, 2026
9Indirect evidenceCastel Gandolfo, ItalyHQ checked Sep 18, 202611-504 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 18, 2026
10Indirect evidenceGorizia, ItalyHQ checked Sep 18, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 18, 2026

Showing 10 of 37 stormwater management system contractors based in Italy

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Stormwater management system contractors based in Italy at a glance

As of Sep 18, 2026
39.6%Verified-email coverage
7.2Average contacts per company
11-50Median size (employees)
5.4%Largest-city concentration · Bologna
Sep 18, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
17
51-200
7

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 37 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 stormwater management system contractors, 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 “stormwater management system contractors”. 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 stormwater management system contractors), 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 stormwater management system contractors, 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, 105 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 18, 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 stormwater management system contractors, 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 stormwater management system contractors are there based in Italy?

RevenueBase identified 37 stormwater management system contractors 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?

S.T.A. Società Trattamento Acque SPA, headquartered in Mantova, tops this list with the largest team on record.

Which city has the most stormwater management system contractors?

Bologna leads with 2 headquartered companies, followed by Calderara Di Reno (2) and Pozzuoli (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 105 verified decision-maker contacts tracked across these 37 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 18, 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.