Company lists · Data refreshed September 2026

Top 25 Industrial wastewater treatment plant construction companies based in South Africa

RevenueBase identified 106 company matches for industrial wastewater treatment plant construction companies associated with South Africa as of September 2026 and tracks 1,528 professional contacts across them, including 346 with verified work emails. Johannesburg is the largest hub.

This list covers company matches for industrial wastewater treatment plant construction companies associated with South Africa, 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 September 15, 2026.

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 Sep 15, 2026 How this list was built
106Companies
1,528Contacts tracked
346Verified emails
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The 25 largest industrial wastewater treatment plant construction companies based in South Africa

Ranked by team size
Top 25 of 106 company matches for industrial wastewater treatment plant construction companies based in South Africa, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 15, 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 matchJohannesburg, South AfricaHQ recorded Sep 15, 2026201-500175 contacts →

Exact match

“Nafasi Water, formerly known as Aveng Water is a 100% black-owned leading water technology and water utility service company.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
2Exact matchRandfontein, South AfricaHQ recorded Sep 15, 2026201-500165 contacts →

Exact match

“Watercare Innovations is a water purification supplier, delivering tailor-made solutions in the fields of water treatment chemicals, and engineered plants such as potable and…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
3Exact matchWestonaria, South AfricaHQ recorded Sep 15, 2026201-50086 contacts →

Exact match

“Tecroveer Holdings: Revolutionising Water Treatment Since 1976 Mission: We Clean Water.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
4Exact matchDurbanville, South AfricaHQ recorded Sep 15, 2026201-50083 contacts →

Exact match

“We offer expertise over the entire spectrum of civil engineering construction with it’s main focus on construction of water treatment plants, waste water treatment plants…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
5Exact matchJohannesburg, South AfricaHQ recorded Sep 15, 202651-20057 contacts →

Exact match

“WEC Water is an EPC contractor in the water and wastewater treatment sector.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
6Exact matchGermiston, South AfricaHQ recorded Sep 15, 202611-5056 contacts →

Exact match

“Since its inception in 1989, J&C Engineering has played a significant role in providing Air Pollution Control and Turnkey Engineering Solutions to industries across Southern…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
7Exact matchJohannesburg, South AfricaHQ recorded Sep 15, 202651-20051 contacts →

Exact match

“As the start and end-point for every aspect of water purity and preservation in Africa, our customers, the environment, and preserving nature‘s most precious resource are at the…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
8Exact matchCape Town, South AfricaHQ recorded Sep 15, 202651-20036 contacts →

Exact match

“We specialise in the design, manufacturing, installation, and operation of advanced water and wastewater treatment plants.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
9Exact matchCape Town, South AfricaHQ recorded Sep 15, 202611-5028 contacts →

Exact match

“Kainos Projects Africa (Kainos) consists of a multidisciplinary team of engineers and technicians with a combined >100 years’ experience in a wide range of technologies in water…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
10Exact matchSomerset West, South AfricaHQ recorded Sep 15, 202611-5022 contacts →

Exact match

“Chimerical Technology is a Process Engineering company specializing in the design and fabrication of industrial processing plants for the mining and agricultural industries.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
11Exact matchBoksburg, South AfricaHQ recorded Sep 15, 202651-20018 contacts →

Exact match

“Welcome to Prosep, a premier leader in the water treatment industry with over 20 years of experience.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
12Exact matchCape Town, South AfricaHQ recorded Sep 15, 20261-1015 contacts →

Exact match

“Aqua Aero Vitae (A2V) are specialists in water and efflluent treatment plants and air filtration systems.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
13Exact matchCape Town, South AfricaHQ recorded Sep 15, 202611-5014 contacts →

Exact match

“Hidro-Tech is a leading water and wastewater treatment engineering firm.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
14Exact matchCape Town, South AfricaHQ recorded Sep 15, 202611-5014 contacts →

Exact match

“QFS have the capability to design, manufacture, install, commissioning and maintain membrane plants and general water treatment equipment in South Africa.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
15Exact matchMiddleburg, South AfricaHQ recorded Sep 15, 202651-20013 contacts →

Exact match

“Water Analytical Services (WAS) was formed in November The founder and director, Stephan van der Merwe, established the company with a specific focus on the coal, iron and steel…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
16Exact matchPotchefstroom, South AfricaHQ recorded Sep 15, 202611-5013 contacts →

Exact match

“LWT offers a complete range of mechanical equipment with in-house capabilities from design, manufacture, installation and commissioning for sewage, water treatment & industrial…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
17Exact matchWestonaria, South AfricaHQ recorded Sep 15, 202651-20010 contacts →

Exact match

“Becon Watertech is a 40 year company,specializing in providing water and sewage treatment solutions.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
18Exact matchJohannesburg, South AfricaHQ recorded Sep 15, 20261-109 contacts →

Exact match

“Telos Water comprises of a team of highly experienced engineers and project managers providing water management solutions to the mining, industrial and municipal sectors.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
19Exact matchStrand, South AfricaHQ recorded Sep 15, 202611-509 contacts →

Exact match

“Leaders in innovative & sustainable water treatment solutions Greenchain Group provides advanced, custom-designed water treatment solutions using cutting-edge membrane technology…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
20Exact matchCape Town, South AfricaHQ recorded Sep 15, 202611-509 contacts →

Exact match

“Inenzo Water is a well known mechanical contractor, taking lead in the municipal water and wastewater treatment industry with decades of experience.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
21Exact matchPretoria, South AfricaHQ recorded Sep 15, 202611-509 contacts →

Exact match

“Clarity Installations (Pty) Ltd is a proudly South African leader in water engineering, delivering innovative and sustainable water and wastewater solutions since 2010.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
22Exact matchCape Town, South AfricaHQ recorded Sep 15, 202611-507 contacts →

Exact match

“Established in 2021, REFLEKT WATER is led by three engineers - Marco Kritzinger, Francois Smuts, and James Whitehead.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
23Exact matchPretoria, South AfricaHQ recorded Sep 15, 20261-107 contacts →

Exact match

“Aqua Horizon Technologies | Sustainable Water & Wastewater Treatment Solutions At Aqua Horizon Technologies (AHT), we deliver over three decades of expertise in sustainable water…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
24Exact matchPort Elizabeth, South AfricaHQ recorded Sep 15, 20261-107 contacts →

Exact match

“Regional Waste Water is a process water treatment specialist company.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
25Exact matchRandburg, South AfricaHQ recorded Sep 15, 202611-507 contacts →

Exact match

“Memaqua Solutions Specializes in water treatment solutions for the potable and industrial markets, that include : Mining, Refining, Automotive, Food and Beverage, agricultural…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase

Showing 25 of 106 industrial wastewater treatment plant construction companies based in South Africa

See the full list, filter by size, metro and specialty, and access 346 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Industrial wastewater treatment plant construction companies based in South Africa at a glance

As of Sep 15, 2026
22.6%Verified-email coverage
14.4Average contacts per company
11-50Median size (employees)
19.8%Largest-city concentration · Johannesburg
Sep 15, 2026Page data refreshed

Companies by employee count

1-10
47
11-50
40
51-200
11
201-500
6
501-1,000
2

Email recency for this list is measured worldwide rather than for South Africa, so it is reported there. Company counts and contact totals on this page are exact for South Africa, over 106 companies.

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.
What qualifies
Company records associated with South Africa whose business descriptions match “industrial wastewater treatment plant construction 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 346 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 September 15, 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.

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 “industrial wastewater treatment plant construction companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial wastewater treatment plant construction companies are there based in South Africa?

RevenueBase identified 106 company matches for industrial wastewater treatment plant construction companies associated with South Africa as of September 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?

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

Which city has the most industrial wastewater treatment plant construction companies?

Johannesburg leads with 21 company records, followed by Cape Town (17) and Centurion (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 346 professional contacts with verified work emails tracked across these 106 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 September 15, 2026.

Ready to reach these companies? Verified emails and direct dials for all 106 industrial wastewater treatment plant construction companies based in South Africa. Start with a free account, no credit card.

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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.