Walk into any shop in Islamabad or Rawalpindi and you will see bottles labelled “purified”, “mineral”, “drinking water” or all three. These words are used loosely, and they do not always mean what buyers assume. This guide explains the real difference so you can read a label with confidence.
What “purified” water means
Purified water is water that has been treated to remove impurities. The starting point can be a borewell, a municipal supply or another source. Common treatment steps include sediment and carbon filtration, reverse osmosis (RO), ultrafiltration, and disinfection with UV light or ozone. The goal is the same in each case: reduce dissolved salts, particles and microorganisms to levels suitable for drinking.
Because treatment removes most of what was in the source water, purified water starts out very clean but also very low in minerals. Some producers add a controlled amount of minerals back afterwards, mainly for taste.
What “natural mineral water” means
Under international food standards (the Codex standard for natural mineral waters), natural mineral water comes from a protected underground source, is bottled at or near the source, and has a stable mineral composition that is not altered by treatment beyond a few permitted steps. Its mineral content is a property of the source itself.
In everyday conversation, however, “mineral water” is often used for any bottled water that contains minerals, whether those minerals occur naturally or were added after treatment. That is why the label alone does not tell you which one you are buying.
Side by side
| Purified water | Natural mineral water | |
|---|---|---|
| Source | Any source, then treated | Protected underground source |
| Treatment | Filtration, RO, UV/ozone and similar | Limited by standards |
| Minerals | Low after treatment; may be added back | Naturally present, stable |
| Consistency | Controlled by the process | Depends on the source |
Is one healthier than the other?
Both can be safe to drink when they meet quality standards. Most people get the minerals they need from food, not from water, so the choice usually comes down to taste, trust in the producer and testing. A safe, properly tested purified water is a perfectly sound choice. The bigger risk is not the category on the label but a supplier whose water is not tested or whose bottles are not kept clean.
How to read a bottled water label
- Source: does the label say where the water comes from?
- Treatment: does it list the process, or only say “pure”?
- Batch and date: is there a production date or batch code so the bottle can be traced?
- Standards: is a recognised standards mark shown, and can the supplier explain it?
- Mineral content: if minerals matter to you, is the composition printed?
Frequently asked questions
Does reverse osmosis remove all the good minerals?
RO removes most dissolved minerals along with other dissolved solids. That is why some producers add a controlled amount of minerals back after treatment.
Is purified water safe for children and for tea and cooking?
Properly treated and tested drinking water is used for all of these in homes and offices every day. If you have a medical question about water for a specific condition, ask your doctor.
How can I check the quality of the water I buy?
Ask your supplier who tests the water and how often, check the seal and smell of each gallon, and read our guide to choosing a water delivery service.
Biogreen supplies purified 19L gallons, 1.5L bottles and 500ml bottles across Islamabad and Rawalpindi. See the full range or message us on WhatsApp with any questions.