Company lists · Data refreshed September 2026

Top 25 On-site water treatment system contractors based in Mexico

Name: On-site water treatment system contractors based in Mexico
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 269 companies tracked

RevenueBase identified 269 on-site water treatment system contractors headquartered in Mexico as of September 2026 and tracks 2,977 professional contacts across them, including 235 with verified work emails. Monterrey is the largest hub.

This list covers on-site water treatment system contractors headquartered in Mexico, 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 17, 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 17, 2026 86% judged on-target in blind review

269Companies

2,977Contacts tracked

235Verified emails

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The 25 largest on-site water treatment system contractors based in Mexico

Ranked by team size

Top 25 of 269 on-site water treatment system contractors based in Mexico, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to on-site water treatment 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Veolia México	Indirect evidence	México D.f., MexicoHQ checked Sep 17, 2026	1,001-5,000	316 contacts →
	Indirect evidence “Veolia en México consolida su presencia y liderazgo local con soluciones medio ambientales de agua, residuos y energía para municipios e industrias.” Source: RevenueBase Database · checked Sep 17, 2026
2	Ticsa Grupo EPM	Indirect evidence	Tlacoquemécatl, MexicoHQ checked Sep 17, 2026	501-1,000	305 contacts →
	Indirect evidence “En TICSA ofrecemos conocimiento y experiencia para crear soluciones innovadoras para el diseño, construcción, operación y mantenimiento de plantas de tratamiento de agua que den…” Source: RevenueBase Database · checked Sep 17, 2026
3	Hydrocon	Indirect evidence	Monterrey, MexicoHQ checked Sep 17, 2026	201-500	200 contacts →
	Indirect evidence “Hydrocon busca lograr la Sustentabilidad Económica, Operativa y Ecológica de sus clientes, siendo un Aliado Estratégico en el manejo integral del agua en la industria, a través de…” Source: RevenueBase Database · checked Sep 17, 2026
4	Grupo Islas	Indirect evidence	Santa Catarina, MexicoHQ checked Sep 17, 2026	201-500	83 contacts →
	Indirect evidence “GRUPO ISLAS, desde 1984 estamos dedicados al AGUA, para brindar soluciones estamos divididos es empresas con basta experiencia y más de 300 colaboradores.” Source: RevenueBase Database · checked Sep 17, 2026
5	Ambbio	Indirect evidence	Monterrey, MexicoHQ checked Sep 17, 2026	51-200	74 contacts →
	Indirect evidence “Empresa mexicana fundada en 1996, con más de 25 años de experiencia ofreciendo a nuestros Clientes sistemas de tratamiento de agua con el uso de tecnologías de tratamiento de agua…” Source: RevenueBase Database · checked Sep 17, 2026
6	Newcalgon	Indirect evidence	Querétaro, MexicoHQ checked Sep 17, 2026	51-200	51 contacts →
	Indirect evidence “En Newcalgon, nos especializamos en proporcionar soluciones integrales y personalizadas para el tratamiento de aguas y procesos industriales, enfocadas en maximizar la eficiencia…” Source: RevenueBase Database · checked Sep 17, 2026
7	Water Technologies DE México, S.A. DE C.V	Indirect evidence	San Pedro Garza García, MexicoHQ checked Sep 17, 2026	51-200	45 contacts →
	Indirect evidence “Es una empresa 100 % Mexicana, con base en la Ciudad de Monterrey, N.” Source: RevenueBase Database · checked Sep 17, 2026
8	CBR Ingeniería	Indirect evidence	Valle De Santiago, MexicoHQ checked Sep 17, 2026	11-50	37 contacts →
	Indirect evidence “Empresa especialista en tratamiento de aguas residuales y sistemas de potabilización de agua.” Source: RevenueBase Database · checked Sep 17, 2026
9	SIMEX	Indirect evidence	MexicoHQ checked Sep 17, 2026	11-50	32 contacts →
	Indirect evidence “Somos una compañía con más de 30 años de experiencia brindando soluciones integrales para las industrias, respaldada por el trabajo de ingenieros especializados y capacitados por…” Source: RevenueBase Database · checked Sep 17, 2026
10	Sypysa Water Treatment	Strong evidence	Zapopan, MexicoHQ checked Sep 17, 2026	51-200	31 contacts →
	Strong evidence “SYPYSA is a company dedicated to providing comprehensive solutions in water treatment to the national and international industry.” Source: RevenueBase Database · checked Sep 17, 2026
11	AWASA	Indirect evidence	Tlaquepaque, MexicoHQ checked Sep 17, 2026	51-200	28 contacts →
	Indirect evidence “Tratamiento de Aguas.” Source: RevenueBase Database · checked Sep 17, 2026
12	Canromex	Indirect evidence	Saltillo, MexicoHQ checked Sep 17, 2026	11-50	24 contacts →
	Indirect evidence “Empresa de Ingeniería dedicada al tratamiento de Agua.” Source: RevenueBase Database · checked Sep 17, 2026
13	ICR Ambiental	Indirect evidence	Puebla, MexicoHQ checked Sep 17, 2026	51-200	21 contacts →
	Indirect evidence “ICR Ambiental se especializa en la ingeniería, diseño, desarrollo, construcción y proyectos "llave en mano" para aguas residuales, aguas de proceso, residuos sólidos y generación…” Source: RevenueBase Database · checked Sep 17, 2026
14	Hidroagua	Indirect evidence	Guadalajara, MexicoHQ checked Sep 17, 2026	11-50	21 contacts →
	Indirect evidence “Nos dedicamos a la fabricación de equipos para el tratamiento y purificación del agua para solucionar sus problemas con la calidad del agua.” Source: RevenueBase Database · checked Sep 17, 2026
15	Aquamont	Indirect evidence	Monterrey, MexicoHQ checked Sep 17, 2026	51-200	20 contacts →
	Indirect evidence “Organización con presencia en el mercado nacional e internacional, dedicada a proveer soluciones en materia de tratamiento de agua.” Source: RevenueBase Database · checked Sep 17, 2026
16	Environ Solutions Group	Indirect evidence	Santa Catarina, MexicoHQ checked Sep 17, 2026	201-500	15 contacts →
	Indirect evidence “ENVIRON SOLUTIONS GROUP (ESG) es una empresa dedicada al medio ambiente con diferentes divisiones para manejo de residuos de manejo especial y peligroso, así como renta de…” Source: RevenueBase Database · checked Sep 17, 2026
17	Ozono Polaris S.A. DE C.V	Indirect evidence	Puebla, MexicoHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Misión: Ser una empresa internacional que brinde a sus clientes soluciones integrales de tratamiento de agua y sanitización en términos sustentables: ambiental, económica y…” Source: RevenueBase Database · checked Sep 17, 2026
18	Mapyessa	Indirect evidence	Monterrey, MexicoHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Quienes Somos?” Source: RevenueBase Database · checked Sep 17, 2026
19	Dosimex	Indirect evidence	Ciudad De México, MexicoHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “Fabricante de tecnología, para todo tipo de aplicaciones de tratamiento de agua.” Source: RevenueBase Database · checked Sep 17, 2026
20	Equimar	Indirect evidence	Guadalajara, MexicoHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “Somos una empresa fundada en Guadalajara, Jalisco dedicada a dar soluciones en el tratamiento de aguas residuales industriales, sanitarias y potables.” Source: RevenueBase Database · checked Sep 17, 2026
21	Baja Sustainable Water	Strong evidence	San Jose Del Cabo, MexicoHQ checked Sep 17, 2026	1-10	6 contacts →
	Strong evidence “CLEAN WATER FOR ALL - Baja Sustainable Water does sustainable water treatment by designing and implementing custom-made, environmentally-friendly solutions through the use of…” Source: RevenueBase Database · checked Sep 17, 2026
22	Morsa Water Systems	Strong evidence	León, MexicoHQ checked Sep 17, 2026	11-50	6 contacts →
	Strong evidence “Morsa Water Systems is an utilities company based out of Bernardo Chávez 301, Los Fresnos, León, Gto, Mexico.” Source: RevenueBase Database · checked Sep 17, 2026
23	Watch Water Mexico	Partial evidence	Merida, MexicoHQ checked Sep 17, 2026	11-50	5 contacts →
	Partial evidence “Watch Water GmbH Water with its headquarter in Mannheim, Germany, is one of the fastest growing Companies in manufacturing Scale Prevention, Adsorbers, Filter Media, and INSTANT…” Source: RevenueBase Database · checked Sep 17, 2026
24	Terminator Water Solutions Mexico	Indirect evidence	Cancun, MexicoHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “Consideramos que todas las aguas residuales pueden ser tratadas y nos enfocamos en hacerlo con el menor costo posible y con la menor huella ambiental.” Source: RevenueBase Database · checked Sep 17, 2026
25	Tecnofiltros SA DE CV	Indirect evidence	Celaya, MexicoHQ checked Sep 17, 2026	1-10	5 contacts →
	Indirect evidence “Profesionales en filtración, tratamiento y bombeo de agua.” Source: RevenueBase Database · checked Sep 17, 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: on-site water treatment system contractors. 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 on-site water treatment system contractors.
Partial evidence: Its own public description names part of on-site water treatment system contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name on-site water treatment system contractors. 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 269 on-site water treatment system contractors based in Mexico

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On-site water treatment system contractors based in Mexico at a glance

As of Sep 17, 2026

7.9%Verified-email coverage

11.1Average contacts per company

11-50Median size (employees)

11.5%Largest-city concentration · Monterrey

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

130

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Mexico, so it is reported there. Company counts and contact totals on this page are exact for Mexico, over 269 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 on-site water treatment 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 Mexico whose own description of what they do matches “on-site water treatment 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 on-site water treatment 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 on-site water treatment system contractors, and records with no verified work email. Companies headquartered outside Mexico 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, 235 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 17, 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.

On-site water treatment system contractors by metro

On-site water treatment system contractors in Monterrey31

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 on-site water treatment 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 on-site water treatment system contractors are there based in Mexico?

RevenueBase identified 269 on-site water treatment system contractors headquartered in Mexico 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?

Veolia México, headquartered in Mexico D.F., tops this list with the largest team on record.

Which city has the most on-site water treatment system contractors?

Monterrey leads with 31 headquartered companies, followed by Queretaro (13) and Guadalajara (12).

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 235 verified decision-maker contacts tracked across these 269 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 17, 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.