Company lists · Data refreshed September 2026
Top 25 Sludge management consultants worldwide
RevenueBase identified 1,524 sludge management consultants worldwide as of September 2026 and tracks 17,213 professional contacts across them, including 3,550 with verified work emails. The United States is the largest market and Pune the largest hub.
This list covers sludge management consultants worldwide, 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 29, 2026. Country and city lists for sludge management consultants follow the table.
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 sludge management consultants worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,810 contacts → | ||||
Partial evidence “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 609 contacts → | ||||
Indirect evidence “Founded in 1904, Nijhuis Saur Industries provides solid and adaptive solutions for sustainable and resilient water use, energy- and resource recovery.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 434 contacts → | ||||
Indirect evidence “Identificamos e solucionamos problemas relacionados ao tratamento de água e efluentes, reúso, dessalinização e análises ambientais para indústrias, consultorias ambientais e…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 243 contacts → | ||||
Indirect evidence “Paterson & Cooke is a global mining consulting firm renowned and trusted for its expertise in a wide range of areas that include tailings and mine waste handling, long distance…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 205 contacts → | ||||
Indirect evidence “Stage 3 Separation is North America’s leading service provider for fluid conservation, solids control and waste mitigation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 155 contacts → | ||||
Indirect evidence “Traitement des Eaux Industrielles et Lixiviats Location de Matériel et Prestations d'Exploitation Industry wastewater and Leachate treatment Equipment rental and operation…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 134 contacts → | ||||
Indirect evidence “Passavant has always been a name synonymous with excellence of execution through innovation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 133 contacts → | ||||
Indirect evidence “As a leading player in environmental technology and services, Keppel Seghers offers a broad portfolio of comprehensive environmental solutions under its parent company (KIE), and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 133 contacts → | ||||
Indirect evidence “Tomorrow Water is an innovative environmental solutions company specializing in both wastewater and organic waste treatment.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 129 contacts → | ||||
Partial evidence “Engineering, development and consulting services for waste management, remediation, renewable energy, industrial and technological plants, natural resources, urban & land…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 113 contacts → | ||||
Partial evidence “Global solutions for water and sludge treatment:#wastewater, drinking water, industrial #effluents.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 111 contacts → | ||||
Partial evidence “GLOBAL WATER & ENERGY (GWE) is a full solution provider to the global marketplace for industrial water and wastewater treatment, water reuse, biomass digestion, sludge, and slurry…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 102 contacts → | ||||
Indirect evidence “Engineering, Constructing, Consulting and Operating company of Environmantal projects and Plants, related to Water, Waste Water, Solid Waste and Energy from Renewable sources.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 101 contacts → | ||||
Partial evidence “Since 2006, ODYSSEE Environnement has been committed to ethical and sustainable water management in the service of industrial performance.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 97 contacts → | ||||
Indirect evidence “At World Water Works, we strive to provide industrial and municipal customers with proven and cost-effective wastewater treatment solutions that deliver superior effluent quality.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 95 contacts → | ||||
Indirect evidence “Water l Science l Technology The Hydroflux Group is a team of water and wastewater treatment experts harnessing the power of world leading research and technologies for a more…” Source: RevenueBase Database · checked Sep 29, 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 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 82 contacts → | ||||
Indirect evidence “Engineering a Sustainable Future, One Project at a Time Founded in Israel in 1996, DHV MED has become a leader in environmental engineering and consulting.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 80 contacts → | ||||
Indirect evidence “Water and Wastewater Equipment Company has been providing efficient, cost-effective and compliant solutions to water and wastewater treatment applications for over 30 years.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 79 contacts → | ||||
Indirect evidence “One name.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 79 contacts → | ||||
Indirect evidence “A SANEX é uma empresa de consultoria técnica e prestação de serviços que atua desde 2002 nas áreas de saneamento básico, meio ambiente e recursos naturais.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 69 contacts → | ||||
Indirect evidence “At MAK Water, we help clients achieve reliable, cost-effective and sustainable water, wastewater and sewage treatment solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 69 contacts → | ||||
Partial evidence “GME is an approved 'A Class' consultant of Kerala State Pollution Control Board.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 68 contacts → | ||||
Indirect evidence “Hydrotech Paryavaran (India) Pvt.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 65 contacts → | ||||
Indirect evidence “Welcome to Solid Ground Over three decades of investigating, engineering, and innovating.” Source: RevenueBase Database · checked Sep 29, 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: sludge management consultants. 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 sludge management consultants.
- Partial evidence
- Its own public description names part of sludge management consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name sludge management consultants. 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 1,524 sludge management consultants worldwide
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Sludge management consultants worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 sludge management consultants, 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.
- Coverage
- Every country. Country and city lists for sludge management consultants are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “sludge management consultants”. 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 sludge management consultants), 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 sludge management consultants, and records with no verified work email.
- 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, 3,550 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 29, 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.
Sludge management consultants by location
12 lists · largest firstEvery Sludge management consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Sludge management consultants based in the United States198
- Sludge management consultants based in India142
- Sludge management consultants based in Brazil112
- Sludge management consultants based in Germany85
- Sludge management consultants based in Italy83
- Sludge management consultants based in Spain46
- Sludge management consultants based in Türkiye44
- Sludge management consultants based in the United Kingdom44
- Sludge management consultants based in Australia37
- Sludge management consultants based in Canada34
- Sludge management consultants based in France33
- Sludge management consultants based in the Netherlands31
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 sludge management consultants, 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 sludge management consultants are there worldwide?
RevenueBase identified 1,524 sludge management consultants worldwide 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?
ION Exchange India LTD, headquartered in Mumbai, tops this list with the largest team on record.
Which country has the most sludge management consultants?
The United States leads with 198 companies, followed by India (142) and Brazil (112). Every sludge management consultants list by country and city is linked on this page.
Which city has the most sludge management consultants?
Pune leads with 13 headquartered companies, followed by Sao Paulo (9) and Chennai (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 3,550 verified decision-maker contacts tracked across these 1,524 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 29, 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.