Company lists · Data refreshed November 2026

Top 25 Legionella testing companies worldwide

RevenueBase identified 577 company matches for legionella testing companies worldwide as of November 2026 and tracks 5,752 professional contacts across them, including 1,411 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers company matches for legionella testing companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for legionella testing companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
577Companies
5,752Contacts tracked
1,411Verified emails
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The 25 largest legionella testing companies worldwide

Ranked by team size
Top 25 of 577 company matches for legionella testing companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchUsaquen, ColombiaHQ recorded Nov 6, 202651-200200 contacts →

Exact match

“Nuestro laboratorio ofrece los servicios de muestreo y análisis fisicoquímico de aguas y suelos, análisis microbiológico, de comunidades biológicas y residuos peligrosos, a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 202651-200179 contacts →

Exact match

“Advanced Environmental Laboratories, Inc.(AEL) is a NELAP/TNI and DOD certified, national full-service laboratory firm, headquartered in Jacksonville, Florida, with additional…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchGeneva, IL, United StatesHQ recorded Nov 6, 2026201-500158 contacts →

Exact match

“Established in 2019, Metiri Group has focused on using full-service environmental laboratories to deliver testing services to inform the decisions that improve the lives of people…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSunnyvale, CO, United StatesHQ recorded Nov 6, 2026201-500153 contacts →

Exact match

“Ascend Clinical, LLC is the nation’s leading provider of laboratory testing, environmental water testing, including Legionella and AAMI ST108 Ascend Clinical was founded in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchDidcot, United KingdomHQ recorded Nov 6, 202651-200139 contacts →

Exact match

“SMS Environmental provide innovative technical solutions to buildings and facilities managers in areas of Legionella control, health and safety, ductwork and ventilation system…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWalsall, United KingdomHQ recorded Nov 6, 2026201-500115 contacts →

Exact match

“We provide a comprehensive range of specialist water treatment & water hygiene services including legionella control, risk assessment, asset monitoring, water system remedial…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMadrid‏‏‎, SpainHQ recorded Nov 6, 202651-20092 contacts →

Exact match

“EZSA Sanidad Ambiental con más de 40 años de experiencia se destaca como empresa líder a nivel nacional del sector de Control de Plagas y Sanidad Ambiental.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSouthend-on-sea, United KingdomHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“Providing Air and Water Hygiene and Kitchen Extract Fire Safety services to clients nationwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMadrid.barcelona.valencia.zaragoza.bilbao.murcia.sevilla.pamplona.toledo.valladolid.vigo.canarias, SpainHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“Empresa nacional perteneciente al Grupo MTA, de más de 65 años de Experiencia, especializada en Laboratorio de Análisis de agua, aire y superficies, Tratamientos, Reciclaje y…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchManchester, CT, United StatesHQ recorded Nov 6, 202651-20078 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLeek, United KingdomHQ recorded Nov 6, 202611-5076 contacts →

Exact match

“SAS WaterLtd are leading providers of professional legionella control, prevention and associated environmental hygiene and risk management services to organisations and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBellegarde, FranceHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Laboratoire d'analyse microbiologique des produits de santé.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSlough, United KingdomHQ recorded Nov 6, 202611-5068 contacts →

Exact match

“At Alpha Scientific, we perform microbiological and chemical water testing for a wide range of water types including hot and cold water services, cooling towers, air conditioning…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMexico City, MexicoHQ recorded Nov 6, 2026201-50063 contacts →

Exact match

“Laboratorio (Agua, Alimentos y Medio ambiente) de cobertura nacional: Muestreo y análisis de: agua, hielo, albercas, descargas residuales, Legionella, Alimentos, Superficies…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSorocaba, BrazilHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“Com qualidade, rapidez e alta tecnologia, os Laboratórios da HB Soluções oferecem serviços especializados de análises em água, efluentes e ambientes climatizados.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchRochester, NY, United StatesHQ recorded Nov 6, 202651-20059 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHelsinki, FinlandHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“MetropoliLab Oy on kotimainen vesi, elintarvike- ja ympäristölaboratorio, joka tarjoaa monipuolisia laboratoriopalveluita yrityksille, laitoksille ja yhteisöille, kuntien ja…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBensalem Township, PA, United StatesHQ recorded Nov 6, 202611-5053 contacts →

Exact match

“Criterion provides rapid and reliable solutions to occupational and environmental health problems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchRichmond, OH, United StatesHQ recorded Nov 6, 202611-5053 contacts →

Exact match

“SanAir Technologies Laboratory, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchJoão Monlevade, BrazilHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“Ecoar Monitoramento Ambiental is a enviromental services company based out of Rua Hamacek 122, João Monlevade, Minas Gerais, Brazil.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-20045 contacts →

Exact match

“A&B Environmental Services, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchTortworth, United KingdomHQ recorded Nov 6, 202651-20044 contacts →

Exact match

“Welcome to Concept Environmental Solutions, your trusted water and air hygiene experts.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWolverhampton, United KingdomHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“At Nant Ltd we provide award winning water safety solutions to the owners and occupiers of premises all across the UK and assist in the fulfilment of the legal responsibilities…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchAylesbury, United KingdomHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“Since 1990 we have provided our clients with leading edge solutions to legionella management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBredbury, United KingdomHQ recorded Nov 6, 202651-20033 contacts →

Exact match

“Hydraclean Ltd are experts in Legionella Compliance & Water Hygiene offering our services to a wide variety of sectors throughout the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 577 legionella testing companies worldwide

See the full list, filter by size, metro and specialty, and access 1,411 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Legionella testing companies worldwide at a glance

As of Nov 6, 2026
24.5%Verified-email coverage
10.0Average contacts per company
1-10Median size (employees)
1.9%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
296
11-50
198
51-200
57
201-500
7
501-1,000
4
1,001-5,000
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for legionella testing companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “legionella testing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,411 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Legionella testing companies by location

4 lists · largest first

Every Legionella testing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “legionella testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legionella testing companies are there worldwide?

RevenueBase identified 577 company matches for legionella testing companies worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Chemilab tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most legionella testing companies?

The United Kingdom leads with 148 companies, followed by the United States (128) and Spain (51). Every legionella testing companies list by country and city is linked on this page.

Which city has the most legionella testing companies?

London leads with 11 company records, followed by Seville (4) and Wolverhampton (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,411 professional contacts with verified work emails tracked across these 577 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.