Purified vs Spring vs Mineral Water — What Is the Difference?
Published by the AquaZen team
The three labels on South African water bottles mean three genuinely different things. Here is what each one tells you about where the water came from and what was done to it.
Three labels, three different products
Walk down any beverage aisle in South Africa and you will see the same three words on bottled water: purified, spring and mineral. They are not marketing synonyms — each describes a different source and a different treatment process, and South African labelling rules treat them as distinct categories.
Knowing the difference matters most when you buy in volume. An office ordering hundreds of bottles a month, or a couple ordering water for a wedding, is choosing a taste profile, a price point and a consistency level all at once.
Purified water: treated to a standard
Purified water starts as ordinary municipal or borehole water and is then put through treatment — typically multi-stage filtration, reverse osmosis and ultraviolet sterilisation — until it meets the SANS 241 drinking water standard. The point of purification is consistency: the process removes what was in the source water, so every bottle tastes clean and neutral regardless of where or when it was bottled.
That neutrality is why purified water dominates bulk and event orders. It offends nobody, pairs with anything, and its production cost is lower than trucking water from a protected spring — a saving that shows up directly in the per-bottle price when you order at volume.
AquaZen water is purified still and sparkling water, bottled in Gauteng and sold per bottle with quantity discounts.
Spring water: defined by its source
Spring water must come from a natural underground source and flow to the surface on its own. It is filtered for safety but deliberately treated as little as possible, because the mineral content it picks up underground is the product — it gives each spring a distinct taste.
The trade-offs are price and consistency. Collection is limited to what the spring yields, transport is often longer, and the taste varies between sources. For a restaurant building a specific flavour experience that can be worth paying for; for an office water budget it usually is not.
Mineral water: spring water with a guaranteed analysis
Mineral water is spring water with a stricter promise: a stable, declared mineral composition, usually printed on the label as milligrams per litre of calcium, magnesium and other salts. Nothing may be added or removed except carbon dioxide, which is why the famous European mineral brands can put the same analysis on every bottle for decades.
It sits at the top of the price range, and most of what it offers — the specific mineral signature — is only meaningful if you drink it still and pay attention. In blind tastings most people group waters by carbonation and temperature long before mineral content.
Which one should you buy?
For everyday drinking, offices, gyms, events and any order where quantity matters, purified water gives you the most consistent product at the lowest per-bottle cost. For a tasting menu or a personal preference for a particular spring, spring or mineral water earns its premium.
If volume is your situation, per-bottle pricing is the number to compare: AquaZen bottles start from R 8,50 per bottle on bulk orders, with a flat R 99,00 delivery fee per order across Gauteng and Cape Town. The price shown is the price you pay; no VAT is charged.