Company lists · Data refreshed September 2026

Top 25 Hydrogeology companies based in South Africa

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 260 companies tracked

RevenueBase identified 260 hydrogeology companies headquartered in South Africa as of September 2026 and tracks 3,235 professional contacts across them, including 1,203 with verified work emails. Johannesburg is the largest hub.

This list covers hydrogeology 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 21, 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 21, 2026 86% judged on-target in blind review

260Companies

3,235Contacts tracked

1,203Verified emails

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The 25 largest hydrogeology companies based in South Africa

Ranked by team size

Top 25 of 260 hydrogeology companies based in South Africa, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogeology 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	Proxa Water	Indirect evidence	Woodmead, South AfricaHQ checked Sep 21, 2026	201-500	358 contacts →
	Indirect 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 21, 2026
2	Jones & Wagener PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	228 contacts →
	Indirect evidence “Jones & Wagener is a specialist firm of consulting engineers and scientists based in South Africa.” Source: RevenueBase Database · checked Sep 21, 2026
3	Rosond	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1,001-5,000	200 contacts →
	Indirect evidence “ROSOND provides fast, efficient, safe and cost-effective drilling and grouting services to mining and exploration industries throughout Africa.” Source: RevenueBase Database · checked Sep 21, 2026
4	Knight Piesold Southern Africa	Indirect evidence	Sandton, South AfricaHQ checked Sep 21, 2026	201-500	193 contacts →
	Indirect evidence “Knight Piésold is a global consulting firm that provides specialised services to the mining, power, water resources and infrastructure industries.” Source: RevenueBase Database · checked Sep 21, 2026
5	Nafasi Water	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	201-500	175 contacts →
	Indirect 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 21, 2026
6	IX Engineers PTY LTD	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 21, 2026	201-500	136 contacts →
	Indirect evidence “iX engineers is a proudly South African multi-disciplinary consulting engineering company with a focus on five key market sectors, being; Water, Energy, Transport, Development…” Source: RevenueBase Database · checked Sep 21, 2026
7	The MSA Group	Indirect evidence	Victory Park, South AfricaHQ checked Sep 21, 2026	51-200	110 contacts →
	Indirect evidence “The MSA Group is a leading provider of exploration, geology, mineral resource and reserve estimation, mining and environmental consulting services to the mining industry.” Source: RevenueBase Database · checked Sep 21, 2026
8	Geogroup	Indirect evidence	Sunrella, South AfricaHQ checked Sep 21, 2026	201-500	68 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
9	GCS Water & Environmental Consultants PTY LTD	Indirect evidence	Rivonia, South AfricaHQ checked Sep 21, 2026	11-50	63 contacts →
	Indirect evidence “Established in 1987, GCS (Pty) Ltd is an independent consultancy offering a range of professional services within the fields of water, environmental and earth sciences.” Source: RevenueBase Database · checked Sep 21, 2026
10	GAST	Indirect evidence	Pretoria, South AfricaHQ checked Sep 21, 2026	201-500	63 contacts →
	Indirect evidence “GAST, founded in 1961 had its roots in the chemical industry.” Source: RevenueBase Database · checked Sep 21, 2026
11	Geosure PTY LTD	Indirect evidence	Durban, South AfricaHQ checked Sep 21, 2026	51-200	57 contacts →
	Indirect evidence “Since the company's inception in 1992, Geosure has established a formidable reputation in Southern African Geotechnics.” Source: RevenueBase Database · checked Sep 21, 2026
12	Digital Surveying	Strong evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	54 contacts →
	Strong evidence “Digital Surveying is a specialist Directional, Geophysical, Geotechnical & Hydrogeological logging company servicing the mining, exploration, and civil engineering industries.” Source: RevenueBase Database · checked Sep 21, 2026
13	ARQ Consulting Engineers PTY LTD	Indirect evidence	Pretoria, South AfricaHQ checked Sep 21, 2026	11-50	52 contacts →
	Indirect evidence “ARQ is an award winning consulting engineering firm with a reputation as being a leader in South Africa in our specialist fields of dams & hydro, geotech and bridges.” Source: RevenueBase Database · checked Sep 21, 2026
14	Wireline Africa	Indirect evidence	Mooi Nooi, South AfricaHQ checked Sep 21, 2026	51-200	52 contacts →
	Indirect evidence “Wireline Africa is an engineering company that focuses on supplying the local and international mining industry with products and services.” Source: RevenueBase Database · checked Sep 21, 2026
15	GPT	Indirect evidence	Pretoria, South AfricaHQ checked Sep 21, 2026	11-50	50 contacts →
	Indirect evidence “Since our inception, GPT has focused on delivering tailor-made environmental services, that go beyond the requirements.” Source: RevenueBase Database · checked Sep 21, 2026
16	Open House Management Solutions	Indirect evidence	Potchefstroom, South AfricaHQ checked Sep 21, 2026	11-50	47 contacts →
	Indirect evidence “Open House Management Solutions is a South-African based, Geotechnical Engineering and Seismological services provider.” Source: RevenueBase Database · checked Sep 21, 2026
17	Singo Consulting	Indirect evidence	Emalahleni, South AfricaHQ checked Sep 21, 2026	51-200	44 contacts →
	Indirect evidence “Singo Consulting (Pty) Ltd is a private independent research consultancy and advisory company based in eMalahleni (Witbank), holding no equity in any project and is owned by the…” Source: RevenueBase Database · checked Sep 21, 2026
18	Franki Africa PTY LTD	Indirect evidence	Ottery, South AfricaHQ checked Sep 21, 2026	51-200	37 contacts →
	Indirect evidence “Franki is the oldest and most established specialist geotechnical contractor in Sub-Saharan Africa.” Source: RevenueBase Database · checked Sep 21, 2026
19	WRP Consulting Engineers	Indirect evidence	Groenkloof, South AfricaHQ checked Sep 21, 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 21, 2026
20	Umvoto	Indirect evidence	Cape Town, South AfricaHQ checked Sep 21, 2026	11-50	37 contacts →
	Indirect evidence “Umvoto is an earth sciences consultancy, specializing in environmental resource development, management and sustainability.” Source: RevenueBase Database · checked Sep 21, 2026
21	SGS Bateman	Indirect evidence	Greenstone Hill, South AfricaHQ checked Sep 21, 2026	n/a	36 contacts →
	Indirect evidence “SGS Bateman is a global operating company in the SGS Natural Resources Division, part of the SGS Group - world-renowned for inspection, verification, testing, and certification…” Source: RevenueBase Database · checked Sep 21, 2026
22	Geoss South Africa	Strong evidence	Stellenbosch, South AfricaHQ checked Sep 21, 2026	11-50	31 contacts →
	Strong evidence “GEOSS, established on 1 March 2001, specializes in all aspects of hydrogeology, including: • Groundwater exploration (borehole siting, drilling supervision with logging, pumping…” Source: RevenueBase Database · checked Sep 21, 2026
23	Kimopax Group	Indirect evidence	Midrand, South AfricaHQ checked Sep 21, 2026	11-50	31 contacts →
	Indirect evidence “Kimopax is a company rendering specialized services in selected earth and environmental sciences, engineering disciplines and related project management functions.” Source: RevenueBase Database · checked Sep 21, 2026
24	Geotheta Consulting Engineers And Scientists	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	28 contacts →
	Indirect evidence “Tailings management today requires more than engineering excellence, it demands independent oversight, structured governance, and defensible risk frameworks.” Source: RevenueBase Database · checked Sep 21, 2026
25	Peragage	Strong evidence	City Of Tshwane, South AfricaHQ checked Sep 21, 2026	11-50	25 contacts →
	Strong evidence “PeraGage is a Leading, Trusted and the Preferred specialist firm of geo-consultants including hydrogeologists, geotechnical engineers and engineering geologists operating…” Source: RevenueBase Database · checked Sep 21, 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: hydrogeology 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 hydrogeology companies.
Partial evidence: Its own public description names part of hydrogeology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogeology 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 260 hydrogeology companies based in South Africa

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Hydrogeology companies based in South Africa at a glance

As of Sep 21, 2026

37.2%Verified-email coverage

12.4Average contacts per company

1-10Median size (employees)

16.2%Largest-city concentration · Johannesburg

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

150

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 260 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 hydrogeology 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 “hydrogeology 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 hydrogeology 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 hydrogeology 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, 1,203 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 21, 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.

Hydrogeology companies by metro

Hydrogeology companies in Johannesburg42
Hydrogeology companies in Pretoria25

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 hydrogeology 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 hydrogeology companies are there based in South Africa?

RevenueBase identified 260 hydrogeology 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?

Proxa Water, headquartered in Woodmead, tops this list with the largest team on record.

Which city has the most hydrogeology companies?

Johannesburg leads with 42 headquartered companies, followed by Pretoria (25) and Cape Town (17).

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 1,203 verified decision-maker contacts tracked across these 260 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 21, 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.