Water Divining in South Africa: Science vs. Myth

Why water divining persists in a water-stressed country

South Africa is the 30th driest country in the world (Global Citizen). Droughts and water shortages that have persisted since 2015 have left some communities without running water for weeks at a stretch. When municipal supply fails and a farm’s livelihood depends on irrigation, the urgency to find underground water is real and immediate. That urgency is precisely the environment in which water divining, also called dowsing or water witching, thrives.

The practice is straightforward to describe: a practitioner walks the land carrying a forked stick, a pair of bent rods, or a pendulum, and claims to feel the instrument move when passing over underground water (waterdiviner.co.za). The claimed outputs are precise: depth, direction, and usable yield, all before a single metre of drill steel enters the ground.

“Before you drill you can work out how deep the water source is, what the quality of the water is like, how much water is there and whether it is there 12 months of the year.”

Keith Fitzgerald, former president of the Dowsers Club of South Australia

That sounds enormously useful. The problem is that when those predictions are tested under controlled conditions, they fail consistently. Not sometimes. Consistently.

GEOSS South Africa, a professional hydrogeological firm, is direct: “Boreholes are often drilled based on the suggestions of a water diviner in South Africa.” The Borehole Water Association of Southern Africa documents the consequence: “wide-spread ignorance regarding groundwater occurrence, development and management” combined with “lack of professionalism in parts of the industry leading to poor siting, drilling and finishing of boreholes resulting in wastage of millions of rands annually.”

What the controlled studies actually show

The scientific record on dowsing is neither thin nor ambiguous. The U.S. Geological Survey received so many public inquiries by 1917 that research hydrologist Arthur J. Ellis compiled a formal review of investigations into water witching. The conclusion then was the same as it is today: no evidence of effectiveness beyond chance.

A 1949 controlled experiment in Maine placed 27 dowsers in a field stripped of surface cues. They failed completely to estimate either the depth or the quantity of water at any of the test sites. A geologist and engineer working the same field successfully predicted depth at 16 sites (Skeptic’s Dictionary).

In 1990, dowsers submitted to 720 separate experiments in Kassel, Germany. The result was the same: fluky successes statistically indistinguishable from chance, despite the practitioners themselves expressing satisfaction with the test conditions (Watchtower Online Library).

The Vogt and Hyman meta-analysis (1979), reviewed by the U.S. Geological Survey, examined many controlled studies and found not one that showed results better than chance. Sharon A. Hill’s review of hundreds of controlled tests reached the same conclusion.

The National Ground Water Association leaves no room for ambiguity in its official position statement, as cited by Geology.com: it “strongly opposes the use of water witches to locate groundwater on the grounds that controlled experimental evidence clearly indicates that the technique is totally without scientific merit.”

The ideomotor effect: why the rod really moves

Dowsers are not, in most cases, deliberately deceiving anyone. The movement of the rod or stick is real and physically measurable. The explanation, however, has nothing to do with underground water. It is the ideomotor effect: involuntary, unconscious muscle movements triggered by expectation and suggestion (Wikipedia, Farmers’ Almanac). The dowsing instrument acts as a mechanical amplifier of those micro-movements. The practitioner genuinely feels the rod move. The movement is simply not caused by water.

“I got to the stage where I could feel a tingling in my hands when I was walking over water.”

Roger Fiebig, water diviner with 50 or more years of experience, speaking to the Stock Journal

The subjective experience is real. The causal link to water is not supported by evidence.

Confirmation bias reinforces belief in both practitioners and clients. As Backyard Boss documents, observers remember dramatic successes and forget failures. When a diviner-sited borehole produces water, the diviner takes full credit. When it does not, the failure is attributed to external factors: test conditions, the driller’s technique, or the landowner having moved the drill point (Aeon Essays). In a country where shallow groundwater is widespread enough that a borehole drilled almost anywhere will eventually hit water if taken deep enough, apparent success rates can look convincing without the method contributing anything at all.

The U.S. Geological Survey makes this explicit: “In many areas underground water is so prevalent close to the land surface that it would be hard to drill a well and not find water; in regions of adequate rainfall and favorable geology, it is difficult not to drill and find water.” That observation applies directly to parts of South Africa’s coastal and higher-rainfall zones.

The GTZ study: the most cited evidence for dowsing, examined honestly

Proponents of dowsing frequently cite a German GTZ-funded project in Sri Lanka led by Professor Hans-Dieter Betz, which reportedly achieved a 96% strike rate across 691 wells drilled over a ten-year period (Farmers’ Almanac). That figure is striking, and it deserves a straight answer rather than dismissal.

The critical context is the comparison baseline. In arid regions using conventional hydrogeological techniques alone, a success rate of 30 to 50% is typical (Survivalist Boards, corrected figure). Sri Lanka’s geology and rainfall pattern, however, support much more widely distributed shallow groundwater than the arid comparison implies. A 96% strike rate in that specific hydrogeological context does not demonstrate that the divining element contributed anything; it may simply reflect that water was findable almost anywhere with sufficient drill depth.

The same study’s depth and yield predictions, reportedly within 10 to 20% accuracy in hundreds of cases (Farmers’ Almanac), are more interesting. Farmers’ Almanac attributes this partly to skilled practitioners unconsciously reading terrain, vegetation, and prior local well data, achieving 70 to 90% hit rates “without any paranormal energy at work.” That is a meaningful distinction: the practitioner’s experience and environmental reading can have genuine value. The rod is not doing the work.

What a real borehole failure looks like in South Africa

Abstract statistics become concrete quickly when the money is yours. Two documented South African owner experiences from Borehole Water Association records illustrate what can go wrong when borehole siting goes poorly.

“The water was expected to be 65 metres deep and I had stopped at only 45 metres. At 63 metres, there it was, a dirty trickle of water coming out of the top of the hole. I stopped the driller right there, there was no way that I was going to waste any more money.”

Owner experience documented by the Borehole Water Association of Southern Africa

“I was informed that the yield of my borehole was only 500 litres per hour at the end of the four-hour test, and that the water was still dirty.”

Owner experience documented by the Borehole Water Association of Southern Africa

Five hundred litres per hour falls well below what a small farm typically needs. According to Everest Drilling, small farm boreholes typically require 2,000 to 5,000 litres per hour; large agricultural operations may need 10,000 L/h or more. A yield of 500 L/h from a borehole that cost R28,000 to R70,000 to drill, plus casing, pump, and installation, is a financial disaster. And the drilling contract provides no recourse: the customer pays for depth drilled, not for water found.

“The customer contracts the driller to drill the borehole to a required depth, not to find the water. The driller cannot be held responsible for the success of the borehole; the customer pays for the depth drilled at the agreed rate regardless of the amount of water or lack thereof.”

Water Pump Services

Some contractors offer no-water, no-pay arrangements, but these typically come at higher per-metre rates (BoreholeHub), so the financial risk is priced in either way.

What hydrogeologists actually do (and what it costs)

A registered hydrogeologist does not walk the property with a stick. Groundwater exploration in South Africa entails geological mapping, hydrocensus surveys, geophysical surveys, and 3D conceptual modelling for informed borehole siting (GEOSS South Africa). The geophysical toolkit includes electrical resistivity methods, electromagnetic methods, and magnetic methods (GEOSS South Africa). Ground Penetrating Radar and Electrical Resistivity Tomography offer 85 to 90% accuracy in identifying water-bearing zones (Rainbow Reservoirs).

Groundwater Surveys South Africa describes using “advanced Electro-Magnetic Technology and specialised geo-physical instruments to accurately locate and map underground water sources.” This is not mysticism. It is physics: different geological materials conduct electricity differently, and water-bearing fractures have a measurable electromagnetic signature.

All practicing hydrogeologists in South Africa must register with SACNASP (South African Council for Natural Scientific Professions) and carry professional indemnity insurance through the SPIIS scheme (SACNASP). That registration creates professional accountability that water diviners, who are entirely unregulated in South Africa, do not have (Ground Water Division).

GEOSS South Africa’s conclusion, stated plainly: “Time, experience and controlled testing have shown that a scientific approach using geological mapping, geophysical surveys and sound geohydrological conceptual modelling is more likely to be successful than water divining.”

“My survey was done and I was told that we could get water at 30m. Once they started drilling, we struck water at 32m! Thank you Hein and Elaine as well as the guys that did the physical drilling. It was a great all round experience and I would recommend them as your all in one solution if you are planning on getting a borehole.”

Customer review of Groundwater Surveys (groundwatersurveys.co.za)

A prediction of 30 metres confirmed at 32 metres is a different category of accuracy than any controlled dowsing test has produced.

Costs and success rates: a direct comparison

Approach	Upfront cost (ZAR)	Strike rate	Regulated / insured	Liability if dry
Water diviner only	Informal (opaque pricing; sources cite R2,000 to R15,000 as a guide)	No controlled evidence of above-chance performance	No	Customer pays full drilling cost
No professional survey (blind drill)	R0 survey cost	50% to 60% (BoreholeHub)	N/A	Customer pays full drilling cost
Hydrogeologist in ideal conditions	R5,000 to R10,000 survey (enviroleg.co.za)	60% to 85% (Water Pump Services)	Yes (SACNASP, SPIIS)	Professional indemnity insurance applies
Full geophysical survey (GPR or ERT)	R5,000 to R15,000 (enviroleg.co.za)	85% to 95% (BoreholeHub)	Yes (SACNASP, SPIIS)	Professional indemnity insurance applies
Complete hydrogeologist-guided setup	R60,000 to R100,000 total (enviroleg.co.za)	85% to 95%	Yes	Professional indemnity insurance applies

Cost-of-ownership comparison: diviner-sited vs. survey-guided borehole

To make the financial comparison concrete, consider a property requiring a borehole drilled to 80 metres, a common depth in harder-rock areas. At R400 to R550 per metre for standard-depth drilling (Borehole Pros), that is R32,000 to R44,000 in drilling costs alone, before casing, pump, and commissioning.

Scenario A: Diviner-sited borehole. The diviner’s fee is informal and typically R2,000 to R15,000. There is no regulated liability. If the borehole produces only 500 L/h of dirty water, as documented by the Borehole Water Association, the landowner has spent R34,000 to R59,000 on a hole that cannot support farm operations. The diviner carries no professional liability. A second borehole must now be drilled.

Scenario B: Geophysical survey plus supervised drilling. The survey adds R5,000 to R15,000 upfront. The survey-guided strike rate of 85 to 95% (BoreholeHub) means the probability of that R32,000 to R44,000 drilling investment producing usable water is substantially higher. A SACNASP-registered hydrogeologist carries professional indemnity insurance, and the full hydrogeological report provides the technical documentation needed for a water use licence under the National Water Act, which groundwater use requires anyway (Ground Water Division).

The survey cost of R5,000 to R15,000 is 10 to 30% of one drilling run. Given a 30 to 40 percentage-point improvement in strike rate, the survey pays for itself within the probability calculation before any drill steel moves. The Borehole Water Association of Southern Africa is unambiguous in its recommendation: contact a geohydrologist to site the best location to drill the borehole.

The psychology of persistence: why rational people choose diviners

Given the evidence, why do 60,000 private boreholes drilled annually in South Africa still include a meaningful share sited by diviners? The answer is not ignorance alone.

Water divining is cheap and immediate. When a farmer is facing crop loss and a municipal system that has not delivered pressure for weeks, paying R2,000 to R5,000 for someone who walks the farm tomorrow feels more actionable than commissioning a R10,000 to R15,000 geophysical study that takes time to schedule. The psychological pull of dowsing is documented (Backyard Boss): it offers the feeling of control over uncertainty, and reduces anxiety about resource scarcity in a tangible, tactile way.

“A lot of farmers reckon it’s a heap of crap, but others rely on it. I wouldn’t drill without someone marking a spot for me.”

Roger Fiebig, water diviner with 50 or more years of experience, speaking to the Stock Journal

That quote captures the split perfectly. The belief is embedded in lived experience and generational practice, and the confirmation bias loop reinforces it every time a borehole in a high-groundwater area finds water.

Cultural context matters too. In African traditional practice, water divination is considered a spiritual connection, a divine gift passed through initiation and mentorship (International Journal of Sub-Saharan African Research). Dismissing that as simple ignorance misses the point. The practical counter-argument is not about belief systems. It is financial: the evidence says the drill bit goes in the wrong place often enough to cost you tens of thousands of rands you cannot recover.

Dr Roger Parsons, a hydrogeologist with 40 or more years of experience and recipient of the Ground Water Medal from the Ground Water Division of the Geological Society of South Africa, has observed directly how pseudoscientific detection methods gain traction precisely when resource anxiety is highest, noting a parallel with claims made during the 1970s oil crisis, none of which stood up to investigation (Daily Maverick).

What to do before you drill

The Borehole Water Association of Southern Africa, GEOSS South Africa, and the Ground Water Division give consistent guidance. Before you spend a rand on drilling:

1. Commission a hydrogeological or geophysical survey from a SACNASP-registered practitioner. Budget R5,000 to R15,000 (enviroleg.co.za). Ask for the practitioner’s SACNASP registration number before signing anything.
2. Understand the geology. Depths of 30 to 60 metres are typical in shallow formations; 60 to 120 metres in deeper groundwater regions; 150 or more metres in hard-rock or low-yield zones (LiquaFlo Borehole Solutions). Yield expectations in fracture-zone crystalline rock are 1,000 to 5,000 L/h; in primary porous sedimentary aquifers, 5,000 to 20,000 L/h (Everest Drilling). Know which geology you are sitting on before you commit.
3. Get a water use licence or general authorisation under the National Water Act before pumping. The hydrogeologist’s report provides the technical documentation required (SGS South Africa).
4. Budget for yield testing at R1,500 to R5,000 and water quality testing at R1,500 to R3,000 (enviroleg.co.za). Knowing what you have before you install a pump system saves the cost of replacing equipment sized for the wrong yield.
5. If a contractor offers a no-water, no-pay guarantee, compare the per-metre rate carefully. The premium typically reflects the risk being transferred, not eliminated.

If you want a sense of what groundwater resources look like in your specific area before commissioning a full survey, that preliminary check costs nothing and takes minutes.

Check my address to see what groundwater data is available for your property before you speak to a driller or a diviner.