Purity, Perfected.
Koh Waters was born from a simple standard: water should be genuinely pure — nothing added that shouldn't be, nothing left behind that shouldn't be. Here is how we make it.
The Source
It Starts Deep Underground
Every bottle of Koh Waters begins as deep underground water, drawn from beneath the surface in Pakistan. Groundwater is naturally shielded from the surface pollution that affects rivers and open reservoirs — but raw from the ground, it is never pure enough for us. That is only the starting point.
From there, every drop is put through reverse osmosis — the same technology used to purify water to the highest standards in the world — followed by UV sterilisation. Minerals are then added back to a set profile, giving the water its clean, crisp taste.
Nothing goes into a Koh bottle that we cannot account for on the label. The mineral profile is set — 210 mg/L total at a neutral pH of 7.0 — and it is printed on every bottle we sell, conforming to PS 4639.
RO + UV
Purification
7.0
pH
210
Total minerals, mg/L
The Process
How It Is Purified
Deep Underground Water
Every bottle starts as deep groundwater, drawn from beneath the surface rather than from open sources.
Reverse Osmosis
A semi-permeable membrane strips dissolved solids, heavy metals and contaminants at a molecular level.
UV Sterilisation
Ultraviolet light treats the water without chemicals, leaving no residue or taste behind.
Minerals Added
Minerals go back in to a set profile — 210 mg/L total at a neutral pH of 7.0 — so the water reads crisp, not flat.
Taste the difference purity makes.
Delivered to your door across Pakistan — bottles by the case, or the 19 L on a weekly subscription.