Company lists · Data refreshed September 2026

Top 25 Hydrogeological consulting firms based in South Africa

Name: Hydrogeological consulting firms based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 246 companies tracked

RevenueBase identified 246 hydrogeological consulting firms headquartered in South Africa as of September 2026 and tracks 2,121 professional contacts across them, including 747 with verified work emails and 77 with mobile numbers. Johannesburg is the largest hub.

This list covers hydrogeological consulting firms 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 3, 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 3, 2026 86% judged on-target in blind review

246Companies

2,121Contacts tracked

747Verified emails

77Mobile numbers

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The 25 largest hydrogeological consulting firms based in South Africa

Ranked by team size

Top 25 of 246 hydrogeological consulting firms based in South Africa, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogeological consulting firms: 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	Knight Piesold Southern Africa	Partial evidence	Sandton, South AfricaHQ checked Sep 3, 2026	201-500	191 contacts →
	Partial 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 3, 2026
2	IX Engineers PTY LTD	Partial evidence	City Of Tshwane, South AfricaHQ checked Sep 3, 2026	201-500	134 contacts →
	Partial 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 3, 2026
3	Nyeleti Consulting PTY LTD	Partial evidence	Lynnwood, South AfricaHQ checked Sep 3, 2026	51-200	93 contacts →
	Partial evidence “Welcome to Nyeleti Consulting!” Source: RevenueBase Database · checked Sep 3, 2026
4	ECO Elementum	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 3, 2026	51-200	68 contacts →
	Indirect evidence “Established in 2013, Eco Elementum is a leading environmental and engineering consultancy.” Source: RevenueBase Database · checked Sep 3, 2026
5	VBKOM	Indirect evidence	Centurion, South AfricaHQ checked Sep 3, 2026	11-50	59 contacts →
	Indirect evidence “At VBKOM, we aim to support organizations within the mining and capital intensive industries to make the best possible decisions through our leadership, expertise and innovative…” Source: RevenueBase Database · checked Sep 3, 2026
6	Geosure PTY LTD	Indirect evidence	Durban, South AfricaHQ checked Sep 3, 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 3, 2026
7	ARQ Consulting Engineers PTY LTD	Partial evidence	Pretoria, South AfricaHQ checked Sep 3, 2026	11-50	52 contacts →
	Partial 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 3, 2026
8	GPT	Indirect evidence	Pretoria, South AfricaHQ checked Sep 3, 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 3, 2026
9	Epoch Resources PTY LTD	Indirect evidence	Bedfordview, South AfricaHQ checked Sep 3, 2026	51-200	49 contacts →
	Indirect evidence “Epoch Resources (Pty) Ltd is a specialist engineering consultancy focused on mine residue and tailings management.” Source: RevenueBase Database · checked Sep 3, 2026
10	Singo Consulting	Partial evidence	Emalahleni, South AfricaHQ checked Sep 3, 2026	51-200	43 contacts →
	Partial 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 3, 2026
11	NWE Consulting Engineers	Partial evidence	Cape Town, South AfricaHQ checked Sep 3, 2026	11-50	37 contacts →
	Partial evidence “NWE Consulting Engineers is a multi-disciplinary consulting engineering company with extensive experience in the engineering disciplines of civil, structural, roads and…” Source: RevenueBase Database · checked Sep 3, 2026
12	WRP Consulting Engineers	Indirect evidence	Groenkloof, South AfricaHQ checked Sep 3, 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 3, 2026
13	Umvoto	Indirect evidence	Muizenberg Cape Town, South AfricaHQ checked Sep 3, 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 3, 2026
14	Zitholele Consulting	Partial evidence	Midrand, South AfricaHQ checked Sep 3, 2026	11-50	33 contacts →
	Partial evidence “ZITHOLELE CONSULTING, offers Specialist Consulting Services in the fields of Engineering, Environmental Management, Waste Management and Strategic Communication.” Source: RevenueBase Database · checked Sep 3, 2026
15	Peragage	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 3, 2026	11-50	25 contacts →
	Indirect 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 3, 2026
16	Pro-Plan Consulting Engineers	Partial evidence	Noordheuwel, South AfricaHQ checked Sep 3, 2026	51-200	24 contacts →
	Partial evidence “Pro-Plan Consulting Engineers is a South African firm specialising in water and civil infrastructure-from bulk water supply, treatment plants and reservoirs to multidisciplinary…” Source: RevenueBase Database · checked Sep 3, 2026
17	JMA Consulting	Partial evidence	Delmas, South AfricaHQ checked Sep 3, 2026	11-50	21 contacts →
	Partial evidence “INTRODUCTION JMA Consulting (Pty) Ltd is an environmental consulting company which comprises of highly trained professionals, each of whom are registered with the South African…” Source: RevenueBase Database · checked Sep 3, 2026
18	Rafuni PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	21 contacts →
	Partial evidence “Rafuni offers Geotechnical, Geological and Environmental Consulting Services.” Source: RevenueBase Database · checked Sep 3, 2026
19	Wec-Consult PTY LTD	Partial evidence	Stellenbosch, South AfricaHQ checked Sep 3, 2026	11-50	16 contacts →
	Partial evidence “WEC-Consult is a South African-owned consulting engineering firm headquartered in Stellenbosch, Western Cape, with the capacity to serve projects across the country and the…” Source: RevenueBase Database · checked Sep 3, 2026
20	E-Tek Consulting	Partial evidence	Potchefstroom, South AfricaHQ checked Sep 3, 2026	11-50	15 contacts →
	Partial evidence “E-TEK Consulting was established in 2007 and consists of a team of dedicated specialists focusing on environmental engineering, environmental management and closure liability…” Source: RevenueBase Database · checked Sep 3, 2026
21	Cyclone Engineering Project	Indirect evidence	Mogale City, South AfricaHQ checked Sep 3, 2026	201-500	15 contacts →
	Indirect evidence “With 15 years of industry experience, Cyclone Engineering Project has established itself as a leading company in the field of engineering services.” Source: RevenueBase Database · checked Sep 3, 2026
22	Guillaume NEL Environmental Consultants Gnec	Indirect evidence	Paarl, South AfricaHQ checked Sep 3, 2026	11-50	14 contacts →
	Indirect evidence “We specialize in Environmental Impact Assessments, Basic Assessment Reports, Environmental Control Officers, Water Use Licenses Application, Waste Management and Mining…” Source: RevenueBase Database · checked Sep 3, 2026
23	Isithelo	Partial evidence	Sandton, South AfricaHQ checked Sep 3, 2026	11-50	14 contacts →
	Partial evidence “Isithelo Background : Previously the technical department of Anglo American’s corporate office, the consulting team have combined their multi-discipinary engineering, mining…” Source: RevenueBase Database · checked Sep 3, 2026
24	Hidro-Tech Systems	Indirect evidence	Cape Town, South AfricaHQ checked Sep 3, 2026	11-50	14 contacts →
	Indirect evidence “Hidro-Tech is a leading water and wastewater treatment engineering firm.” Source: RevenueBase Database · checked Sep 3, 2026
25	Arquero Technical Support	Partial evidence	Johannesburg, South AfricaHQ checked Sep 3, 2026	11-50	11 contacts →
	Partial evidence “ARQUERO® provides professional engineering consulting services for HVAC Design, Plumbing & Drainage, Electrical, Fire Protection Systems and Water & Wastewater Treatment Systems…” Source: RevenueBase Database · checked Sep 3, 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: hydrogeological consulting firms. 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 hydrogeological consulting firms.
Partial evidence: Its own public description names part of hydrogeological consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogeological consulting firms. 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 246 hydrogeological consulting firms based in South Africa

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Hydrogeological consulting firms based in South Africa at a glance

As of Sep 3, 2026

35.2%Verified-email coverage

3.6%Mobile-number coverage

8.6Average contacts per company

1-10Median size (employees)

13.0%Largest-city concentration · Johannesburg

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

157

11-50

51-200

201-500

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

6731–60

42561–90

25390–180

2180+

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 hydrogeological consulting firms, 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 “hydrogeological consulting firms”. 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 hydrogeological consulting firms), 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 hydrogeological consulting firms, 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, 747 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 3, 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.

Hydrogeological consulting firms by metro

Hydrogeological consulting firms in Johannesburg32

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 hydrogeological consulting firms, 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 hydrogeological consulting firms are there based in South Africa?

RevenueBase identified 246 hydrogeological consulting firms 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?

Knight Piesold Southern Africa, headquartered in Sandton, tops this list with the largest team on record.

Which city has the most hydrogeological consulting firms?

Johannesburg leads with 32 headquartered companies, followed by Pretoria (23) and Cape Town (15).

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 747 verified decision-maker contacts tracked across these 246 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 3, 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.