Vol. I · Science Brief · Last reviewed · April 2026

The Science of
Zamzam Water.

A natural mineral profile unlike any other water source — measured by chemists, observed by hydrogeologists, and consistently mineral-rich across modern analyses.

4,000+

Years flowing

Dozens

Trace minerals

~7.8

Natural pH

~24×

Calcium vs typical bottled water

Zamzam is the oldest continuously flowing well on Earth. It sits in the heart of Mecca, steps from the Kaaba, and it has provided water there for at least 1,450 recorded years — and by tradition since the time of Ibrahim, peace be upon him, some 4,000 years ago.

The Prophet Muhammad, peace be upon him, called it the best water on the face of the earth (narrated by al-Tabarani), and described it as blessed — "food that nourishes" (Sahih Muslim, from Abu Dharr). For Muslims, these are not metaphors. They are statements from a man whose words have never been proven wrong.

Modern science is beginning to understand why.

The story of Zamzam begins with Hajar (Hagar), the wife of the Prophet Ibrahim (Abraham), peace be upon them both.

Ibrahim was commanded by God to leave Hajar and their infant son Ismail in the desert valley of Mecca — a place with no water, no vegetation, no other people. Hajar placed her trust in God. When her water ran out and her son cried from thirst, she ran between the hills of Safa and Marwa seven times, searching for help.

On the seventh pass, the angel Jibril (Gabriel) struck the ground near Ismail. A spring erupted from the sand. Water poured out of the desert floor.

Hajar rushed to contain it. She said "Zam" — which in her ancient language meant "stop." She gathered the water into a basin.

“The Prophet, as he narrated the story to us, said, 'Blessed is our mother Hajar. If she didn't say stop, Allah would have made this spring a river.'”
— Saif Qasrawi, Zim Zam co-founder

The well was eventually buried and lost for centuries. It was rediscovered by Abdul Muttalib, the Prophet Muhammad's grandfather, through a dream that guided him to the exact location. It has been flowing ever since.

No matter how much water is pumped from the well, the level never changes. Millions of pilgrims drink from it every year during Hajj and Umrah. The supply has never faltered.

That alone is remarkable. But what scientists found inside the water is what made us build this company.

Fig. III · Mineral Composition Approximate values, mg/L · varies by sample

Mineral	Zamzam Water	Typical Bottled Water	Tap Water (approx.)
Calcium Ca²⁺	~200	~8	~5–40
Sodium Na⁺	~133	~6	~10–50
Magnesium Mg²⁺	~50	~2	~1–8
Potassium K⁺	~43	~1	~1–5
Sulfates SO₄²⁻	~150	—	—
Bicarbonates HCO₃⁻	~366	—	—
pH alkalinity	~7.8	~7.0	~6.5–7.5

The numbers tell a clear story. Zamzam water has roughly 24 times the calcium of typical bottled drinking water — and even ordinary mineral water has several times the calcium of tap water. By the time you compare Zamzam to what comes out of a faucet, the difference is striking.

It is not just the levels. It is the balance. High calcium paired with high bicarbonates. Moderate sodium — not the hyperdosed sodium found in most electrolyte products. Significant sulfates. A broad spectrum of trace minerals. A natural alkalinity around 7.8 — slightly alkaline without being extreme.

No other water source on Earth has this combination.

Chapter IV · A Well That Defies Explanation

No matter how much they pump,
it's always the same exact level.

— Abel · Zim Zam co-founder

Zamzam is not fed by rain. It is not replenished by a river. It sits in one of the driest regions on Earth — the Arabian desert — and it has never dried up.

Hydrogeologists have measured the flow rate and the water level. Millions of liters are pumped every year to supply pilgrims. The water level remains the same. When pumping stops, the level does not rise. When pumping resumes, the level does not drop. It is constant.

Across the modern record of testing, Zamzam's mineral character has stayed consistently rich — even as exact figures vary from one sample to the next.

“The Quran is not a book of science. It's a book of signs.”
— Saif Qasrawi

For believers, this is a sign. For scientists, it is a data point that does not fit neatly into existing models. For us, it is both.

Fig. IV Ionic Composition Concentration · mg/L

BicarbonateHCO₃⁻

366mg/L

CalciumCa²⁺

200mg/L

SulfateSO₄²⁻

150mg/L

SodiumNa⁺

133mg/L

MagnesiumMg²⁺

50mg/L

PotassiumK⁺

43.3mg/L

Trace ionsdozens identified

—trace

Most electrolyte products take a simple approach: pick one or two minerals and load up. The latest trend says sodium is important — so they put 1,000 mg of sodium in a single serving. The next study says potassium — so a new brand appears with megadosed potassium.

The problem is not the mineral. The problem is the isolation.

Your body does not absorb minerals one at a time. It absorbs them in context. Calcium and magnesium work together. Sodium and potassium move in balance across your cells. And bicarbonates round out the profile — buffering the blend the way they do in Zamzam water itself, rather than leaving a single megadosed mineral to overwhelm the rest.

This is what scientists call companion compounds — minerals that work together, where the presence of one makes the others more effective.

“It's not that Zamzam has the minerals like 'oh yeah, our electrolyte mix also has potassium.' No — it's what else does it also have, because that actually means your potassium could be inaccessible. But because ours is in this exact golden ratio is exactly the reason why it's accessible.”
— Saif Qasrawi · Inorganic Research Chemist

Zamzam water has this naturally. Its minerals exist in a specific ratio — not maximized for any single nutrient, but balanced across all of them. That balance is not an accident — and it has held remarkably steady across the modern record of testing.

Here is something most people do not know about the electrolyte products on store shelves — and it explains why none of them can do what Zamzam water does naturally.

When a brand overdoses on minerals, the product tastes terrible. To fix the taste, they add sugar, artificial sweeteners, and flavors — often alongside citric or other added acids. That works against any bicarbonates in the blend: sodium bicarbonate reacts with acid and breaks down, releasing carbon dioxide. A product built around sugar and citric acid is fighting its own bicarbonates. Ours adds no sugar and no acid, so the bicarbonates stay intact in the bag.

Bicarbonates are one of Zamzam water's most important components. They are what give it its natural alkalinity and round out its mineral balance. And every brand that adds sugar — along with the acids that usually come with it — works against the bicarbonates in the bottle.

This is not a choice those brands made. It is a consequence of their formulation approach. Overdose the minerals, mask the taste with sugar and acid, lose much of the bicarbonate. It is a trap built into the design.

Zim Zam avoids it entirely. Moderate mineral doses mean the blend tastes clean without sugar — like mineral water, not candy. No sugar means bicarbonates stay intact.

Chapter VIII · Science Catches Up

The only trend is that you
keep changing your mind.

— Saif Qasrawi, on the history of electrolyte science

We are not Zamzam water. We will never be Zamzam water — and we would never claim to be.

What we have done is study the mineral composition that makes Zamzam unlike any other water on Earth, and we have formulated a blend of six food-grade ingredients that mimics it as closely as possible.

The name says it. Zim Zam — almost there, but not quite. We are copying the creation, not claiming to equal the Creator.

Six ingredients. No sugar. No colors. No flavors. The closest electrolyte blend to Zamzam water's mineral profile on the market.

§ Ready to Try It

Drink the closest thing
to Zamzam water at home.

Six ingredients. The mineral profile of Zamzam water, mimicked as closely as we can. From thirty-three cents a serving.

Shop the Mineral Mix See the Ingredients

The Science of
Zamzam Water.

The well that never stopped.

The story of the well.

A profile no other water source on Earth can match.

A miracle of hydrogeology.

The six ions we built our blend to mimic.

Why the ratio matters more.

The sugar-bicarbonate trap.

From Zamzam to Zim Zam.

Drink the closest thing
to Zamzam water at home.

The Science ofZamzam Water.

Drink the closest thingto Zamzam water at home.

The Science of
Zamzam Water.

Drink the closest thing
to Zamzam water at home.