Company lists · Data refreshed September 2026

Top 25 Water and sanitation companies based in South Africa

Name: Water and sanitation companies based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 164 companies tracked

RevenueBase identified 164 water and sanitation companies headquartered in South Africa as of September 2026 and tracks 11,835 professional contacts across them, including 3,410 with verified work emails. Johannesburg is the largest hub.

This list covers water and sanitation companies headquartered in South Africa, 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 22, 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 22, 2026 86% judged on-target in blind review

164Companies

11,835Contacts tracked

3,410Verified emails

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The 25 largest water and sanitation companies based in South Africa

Ranked by team size

Top 25 of 164 water and sanitation companies based in South Africa, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to water and sanitation companies: 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	Rand Water	Strong evidence	Glenvista, South AfricaHQ checked Sep 22, 2026	1,001-5,000	2,978 contacts →
	Strong evidence “VISION: Be a provider of sustainable, universally competitive water and sanitation solutions for Africa.” Source: RevenueBase Database · checked Sep 22, 2026
2	Umngeni-Uthukela Water	Partial evidence	Pietermaritzburg, South AfricaHQ checked Sep 22, 2026	1,001-5,000	1,008 contacts →
	Partial evidence “Global Leader in the sustainable provision of water and related services.” Source: RevenueBase Database · checked Sep 22, 2026
3	Proxa Water	Partial evidence	Woodmead, South AfricaHQ checked Sep 22, 2026	201-500	358 contacts →
	Partial evidence “Proxa is a leading water treatment specialist whose integrated services cover the entire water cycle and span numerous global industries, including: mining, food & beverage…” Source: RevenueBase Database · checked Sep 22, 2026
4	ERWAT	Partial evidence	Kempton Park, South AfricaHQ checked Sep 22, 2026	501-1,000	270 contacts →
	Partial evidence “ERWAT provides sustainable, affordable, quality water care and resource recovery services through partnerships and collaborative initiatives with external role players, utilising…” Source: RevenueBase Database · checked Sep 22, 2026
5	Talbot	Partial evidence	Durban, South AfricaHQ checked Sep 22, 2026	51-200	202 contacts →
	Partial evidence “Increasing pressure on water resources is leading to a global rise in supply-risk and cost of total water management.” Source: RevenueBase Database · checked Sep 22, 2026
6	Nafasi Water	Partial evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	201-500	175 contacts →
	Partial evidence “Nafasi Water, formerly known as Aveng Water is a 100% black-owned leading water technology and water utility service company.” Source: RevenueBase Database · checked Sep 22, 2026
7	Watercare Innovations	Partial evidence	Randfontein, South AfricaHQ checked Sep 22, 2026	201-500	165 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
8	Magalies Water	Partial evidence	Rustenburg, South AfricaHQ checked Sep 22, 2026	201-500	153 contacts →
	Partial evidence “Magalies Water is a Water Board established in terms of section 29 of the Water Services Act,(Act No 108 of 1997) and Public Entity as per Schedule 3B of the Public Finance…” Source: RevenueBase Database · checked Sep 22, 2026
9	Tecroveer	Partial evidence	Westonaria, South AfricaHQ checked Sep 22, 2026	201-500	86 contacts →
	Partial evidence “Tecroveer Holdings: Revolutionising Water Treatment Since 1976 Mission: We Clean Water.” Source: RevenueBase Database · checked Sep 22, 2026
10	JOAT	Partial evidence	Pinetown, South AfricaHQ checked Sep 22, 2026	51-200	69 contacts →
	Partial evidence “The JOAT Group of companies specialises in all aspects of water distribution management, energy efficiency in the water industry, instrumentation and control, and related…” Source: RevenueBase Database · checked Sep 22, 2026
11	Watericon	Partial evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	51-200	51 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
12	Rockblue	Indirect evidence	Somerset West, South AfricaHQ checked Sep 22, 2026	51-200	48 contacts →
	Indirect evidence “What do we do?” Source: RevenueBase Database · checked Sep 22, 2026
13	Silulumanzi	Partial evidence	Mbombela, South AfricaHQ checked Sep 22, 2026	201-500	48 contacts →
	Partial evidence “Silulumanzi has a 30-year concession contract with the City of Mbombela Local Municipality for rendering of water and wastewater services for approximately people.” Source: RevenueBase Database · checked Sep 22, 2026
14	Siza Water RF PTY LTD	Partial evidence	Ballito, South AfricaHQ checked Sep 22, 2026	51-200	42 contacts →
	Partial evidence “Siza Water (RF)(Pty) Ltd is the water service provider of the Dolphin Coast in KwaZulu Natal, South Africa.” Source: RevenueBase Database · checked Sep 22, 2026
15	WRP Consulting Engineers	Indirect evidence	Groenkloof, South AfricaHQ checked Sep 22, 2026	11-50	37 contacts →
	Indirect evidence “WRP is a proudly level 2 BB-BEE specialist engineering consultancy founded and cultivated in South Africa.” Source: RevenueBase Database · checked Sep 22, 2026
16	Alveo Water PTY LTD	Partial evidence	Cape Town, South AfricaHQ checked Sep 22, 2026	51-200	36 contacts →
	Partial evidence “We specialise in the design, manufacturing, installation, and operation of advanced water and wastewater treatment plants.” Source: RevenueBase Database · checked Sep 22, 2026
17	Puritech Water Treatment	Indirect evidence	Midrand, South AfricaHQ checked Sep 22, 2026	11-50	32 contacts →
	Indirect evidence “We are based in the heart of Johannesburg, the land of Gold.” Source: RevenueBase Database · checked Sep 22, 2026
18	Aquamat Engineering Solutions	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 22, 2026	11-50	31 contacts →
	Indirect evidence “Aquamat, established in 1968 active in 33 African Countries.” Source: RevenueBase Database · checked Sep 22, 2026
19	Sewtreat	Partial evidence	Pretoria, South AfricaHQ checked Sep 22, 2026	51-200	30 contacts →
	Partial evidence “SewTreat (Pty) Ltd is a renowned South African company with a global reputation for delivering exceptional water management solutions across diverse sectors.” Source: RevenueBase Database · checked Sep 22, 2026
20	Enviro Options Enviro LOO	Strong evidence	Mogale City, South AfricaHQ checked Sep 22, 2026	51-200	28 contacts →
	Strong evidence “Enviro Options (PTY) Ltd trading as Enviro Loo is a proudly South African sanitation company providing sustainable, water-efficient solutions that operate independently of sewer…” Source: RevenueBase Database · checked Sep 22, 2026
21	Water Institute Of Southern Africa	Partial evidence	Midrand, South AfricaHQ checked Sep 22, 2026	11-50	25 contacts →
	Partial evidence “WISA was formed in 1987 when the Southern African branch of the Institute of Water Pollution Control, originally founded in 1937, was disbanded.” Source: RevenueBase Database · checked Sep 22, 2026
22	Water And Sanitation Services South Africa Proprietary Limited	Indirect evidence	Sandton, South AfricaHQ checked Sep 22, 2026	1-10	23 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
23	Africa Utility Solutions	Indirect evidence	Parkwood, South AfricaHQ checked Sep 22, 2026	11-50	22 contacts →
	Indirect evidence “Africa Utility Solutions (AUS) is a 100% female owned, Level 1 Black Economic Empowerment (BEE), company that offers innovative solution driven products and expertise in utility…” Source: RevenueBase Database · checked Sep 22, 2026
24	H2o BWT Africa	Partial evidence	Cape Town, South AfricaHQ checked Sep 22, 2026	201-500	21 contacts →
	Partial evidence “Life Sustaining Water for ALL!” Source: RevenueBase Database · checked Sep 22, 2026
25	Aquaffection PTY LTD	Indirect evidence	Pretoria, South AfricaHQ checked Sep 22, 2026	11-50	19 contacts →
	Indirect evidence “AQUAffection is a company based out of Scientia Technopark, Pretoria, Gauteng, South Africa.” Source: RevenueBase Database · checked Sep 22, 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: water and sanitation companies. 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 water and sanitation companies.
Partial evidence: Its own public description names part of water and sanitation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water and sanitation companies. 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 164 water and sanitation companies based in South Africa

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Water and sanitation companies based in South Africa at a glance

As of Sep 22, 2026

28.8%Verified-email coverage

72.2Average contacts per company

11-50Median size (employees)

17.7%Largest-city concentration · Johannesburg

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 164 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 water and sanitation companies, 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 South Africa whose own description of what they do matches “water and sanitation companies”. 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 water and sanitation companies), 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 water and sanitation companies, and records with no verified work email. Companies headquartered outside South Africa 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, 3,410 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 22, 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.

Water and sanitation companies by metro

Water and sanitation companies in Johannesburg29

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 water and sanitation companies, 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 water and sanitation companies are there based in South Africa?

RevenueBase identified 164 water and sanitation companies headquartered in South Africa 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?

Rand Water, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most water and sanitation companies?

Johannesburg leads with 29 headquartered companies, followed by Cape Town (18) and Pretoria (16).

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 3,410 verified decision-maker contacts tracked across these 164 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 22, 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.