Company lists · Data refreshed September 2026

Top 25 Hydrology consultants based in South Africa

Name: Hydrology consultants 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 171 companies tracked

RevenueBase identified 171 hydrology consultants headquartered in South Africa as of September 2026 and tracks 2,151 professional contacts across them, including 778 with verified work emails. Johannesburg is the largest hub.

This list covers hydrology consultants 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

171Companies

2,151Contacts tracked

778Verified emails

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The 25 largest hydrology consultants based in South Africa

Ranked by team size

Top 25 of 171 hydrology consultants 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 hydrology consultants: 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	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
2	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
3	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
4	ECO Elementum	Partial evidence	City Of Tshwane, South AfricaHQ checked Sep 21, 2026	51-200	68 contacts →
	Partial evidence “Established in 2013, Eco Elementum is a leading environmental and engineering consultancy.” Source: RevenueBase Database · checked Sep 21, 2026
5	GCS Water & Environmental Consultants PTY LTD	Partial evidence	Rivonia, South AfricaHQ checked Sep 21, 2026	11-50	63 contacts →
	Partial 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
6	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
7	Epoch Resources PTY LTD	Partial evidence	Bedfordview, South AfricaHQ checked Sep 21, 2026	51-200	49 contacts →
	Partial evidence “Epoch Resources (Pty) Ltd is a specialist engineering consultancy focused on mine residue and tailings management.” Source: RevenueBase Database · checked Sep 21, 2026
8	Singo Consulting	Partial evidence	Emalahleni, South AfricaHQ checked Sep 21, 2026	51-200	44 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 21, 2026
9	NWE Consulting Engineers	Indirect evidence	Plattekloof, South AfricaHQ checked Sep 21, 2026	11-50	38 contacts →
	Indirect 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 21, 2026
10	WRP Consulting Engineers	Partial evidence	Groenkloof, South AfricaHQ checked Sep 21, 2026	11-50	37 contacts →
	Partial 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
11	Umvoto	Partial evidence	Cape Town, South AfricaHQ checked Sep 21, 2026	11-50	37 contacts →
	Partial evidence “Umvoto is an earth sciences consultancy, specializing in environmental resource development, management and sustainability.” Source: RevenueBase Database · checked Sep 21, 2026
12	Epitome Consulting	Partial evidence	Glen Marais, South AfricaHQ checked Sep 21, 2026	n/a	37 contacts →
	Partial evidence “Epitome Consulting is an ambitious, wholly PDI owned and emerging multi-disciplinary civil engineering consultancy and project management firm.” Source: RevenueBase Database · checked Sep 21, 2026
13	Groundtruth	Indirect evidence	Hilton, South AfricaHQ checked Sep 21, 2026	11-50	32 contacts →
	Indirect evidence “An award-winning multidisciplinary consulting company with over 20 years experience in water, biodiversity, and engineering across aquatic and terrestrial ecosystems.” Source: RevenueBase Database · checked Sep 21, 2026
14	Geoss South Africa	Indirect evidence	Stellenbosch, South AfricaHQ checked Sep 21, 2026	11-50	31 contacts →
	Indirect 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
15	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
16	Peragage	Partial evidence	City Of Tshwane, South AfricaHQ checked Sep 21, 2026	11-50	25 contacts →
	Partial 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
17	Pro-Plan Consulting Engineers	Indirect evidence	Noordheuwel, South AfricaHQ checked Sep 21, 2026	51-200	24 contacts →
	Indirect 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 21, 2026
18	JMA Consulting	Indirect evidence	Delmas, South AfricaHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect 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 21, 2026
19	Cyclone Engineering Project	Indirect evidence	Mogale City, South AfricaHQ checked Sep 21, 2026	201-500	16 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 21, 2026
20	Coastwise Consulting	Indirect evidence	Durban, South AfricaHQ checked Sep 21, 2026	1-10	16 contacts →
	Indirect evidence “CoastWise Consulting is a specialist environmental consulting company operating in collaboration with like-minded specialists in the coastal and estuarine environments” Source: RevenueBase Database · checked Sep 21, 2026
21	Guillaume NEL Environmental Consultants Gnec	Indirect evidence	Paarl, South AfricaHQ checked Sep 21, 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 21, 2026
22	Hidro-Tech Systems	Indirect evidence	Cape Town, South AfricaHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “Hidro-Tech is a leading water and wastewater treatment engineering firm.” Source: RevenueBase Database · checked Sep 21, 2026
23	Artesium Consulting Services	Indirect evidence	Pretoria, South AfricaHQ checked Sep 21, 2026	1-10	12 contacts →
	Indirect evidence “We are passionate about our vision to provide world leading hydrogeological and mine water management specialist services with the goal of value engineering and determination of…” Source: RevenueBase Database · checked Sep 21, 2026
24	KTN Consulting Engineers And Project Managers	Indirect evidence	Midrand, South AfricaHQ checked Sep 21, 2026	1-10	12 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
25	Geomeasure Group PTY LTD	Indirect evidence	Hillcrest, South AfricaHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “The Geomeasure Group (Pty) Ltd was founded on 1 July 2002 with the aim of creating a company with a multidisciplinary team of specialist professionals, with the preservation of…” 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: hydrology consultants. 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 hydrology consultants.
Partial evidence: Its own public description names part of hydrology consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrology consultants. 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 171 hydrology consultants based in South Africa

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Hydrology consultants based in South Africa at a glance

As of Sep 21, 2026

36.2%Verified-email coverage

12.6Average contacts per company

1-10Median size (employees)

13.5%Largest-city concentration · Johannesburg

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

109

11-50

51-200

201-500

501-1,000

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 171 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 hydrology consultants, 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 “hydrology consultants”. 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 hydrology consultants), 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 hydrology consultants, 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, 778 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.

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 hydrology consultants, 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 hydrology consultants are there based in South Africa?

RevenueBase identified 171 hydrology consultants 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?

Jones & Wagener PTY LTD, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most hydrology consultants?

Johannesburg leads with 23 headquartered companies, followed by Pretoria (14) and Cape Town (12).

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 778 verified decision-maker contacts tracked across these 171 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.