Water, quality and the twin cities

Notes on safe drinking water, how purification works, and getting reliable supply for your home or business.

Latest articles

A clear walkthrough of every stage, from chlorination to reverse osmosis to sterilised bottling, and what each one removes.

The real difference between mineral water and purified RO water, and which one DEOSAI is certified to provide.

Coming soon

How independent audits and the Pakistan Standard Mark translate into safer water at your tap.