Can You Drink Tap Water in Prague?
Yes. Prague's tap water comes from the Želivka reservoir and is thoroughly treated at one of Europe's most advanced water treatment plants. It meets all EU drinking water standards and is perfectly safe to drink straight from the tap — no filter, no boiling, no bottled water necessary.
That is the short answer. Below we cover what it tastes like, where to refill, and how to ask for tap water in restaurants — a question that confuses visitors more than it should.
Where Does Prague's Tap Water Come From?
Prague's primary water source is the Želivka reservoir, located roughly 100 kilometres southeast of the city in the Bohemian-Moravian Highlands. The reservoir was built in the 1970s and supplies approximately 75% of Prague's drinking water. The remaining 25% comes from the Vltava river — specifically from the Podolí waterworks on the river's east bank — and from a network of underground wells.
The Želivka treatment plant processes water through multiple filtration stages, including ozone treatment, activated carbon, and UV disinfection. The result is water that consistently exceeds EU purity requirements.
Insider detail: The Želivka water supply system runs through a 52-kilometre underground aqueduct that feeds directly into Prague's distribution network. It is gravity-fed for most of the route, which means lower energy costs and fewer pumping stations — an engineering detail from the 1970s that still works remarkably well.
What Does Prague Tap Water Taste Like?
Prague tap water is moderately hard, meaning it has a noticeable mineral content — primarily calcium and magnesium. If you are accustomed to soft water (common in Scandinavia or parts of the UK), you may notice a slightly different mouthfeel. It is not unpleasant, just different.
The hardness varies slightly by neighbourhood. Areas supplied primarily from Želivka (most of Prague) tend to have softer water than those drawing more from the Vltava or local wells. In practice, the difference is subtle.
Insider detail: The white residue you might see on kettles or bathroom taps in Prague hotels is calcium carbonate — a harmless mineral deposit from the hard water. It says nothing about safety. Czech water utilities publish real-time quality data online, and Prague's numbers are consistently within safe limits by a wide margin.
Some visitors report a faint chlorine taste, particularly in older buildings with longer pipe runs. Running the cold tap for 10-15 seconds before filling your glass eliminates this. The chlorine content is well below EU limits and serves an important purpose — keeping water safe through the distribution network.
Refill Stations and Fountain Locations
Prague has been expanding its network of public drinking water fountains, particularly in the city centre. You will find them in several parks and squares:
- Letná Park — multiple fountains along the main promenade
- Riegrovy sady — near the beer garden
- Kampa Island — close to the river path
- Wenceslas Square — seasonal fountains during summer months
- Náplavka (Vltava embankment) — refill points near the farmers' market
Many cafés and restaurants will also refill your bottle free of charge if you ask politely. Czechs are generally accommodating about this — water is not treated as a premium commodity the way it is in some Southern European countries.
Insider detail: The historic fountains you see in Old Town — the ornamental ones near Staroměstské náměstí and along Královská cesta — are decorative. Do not drink from them. The modern refill points are clearly marked with a drinking water symbol (a tap icon or the words "pitná voda").
Can You Ask for Tap Water at Restaurants?
Yes, and this is where many visitors hesitate unnecessarily. Asking for tap water in a Prague restaurant is perfectly acceptable. The Czech phrase is "kohoutkovou vodu, prosím" (tap water, please). Most servers will bring it without fuss.
A few things worth knowing:
Higher-end restaurants typically bring bottled water to the table automatically and may steer you toward mineral water (Mattoni and Korunní are the most common Czech brands). This is standard hospitality, not a scam — but you are within your rights to request tap water instead.
Traditional Czech pubs (hospody) are less likely to serve water at all unless asked. Beer is the expected order. If you ask for water, you will get it, but expect a small glass rather than a full carafe.
Tourist-area restaurants occasionally charge a small cover or service fee that may include water, or they may bring bottled water and charge 40-80 CZK per bottle. Check the menu before ordering, and if you want free tap water, specify "kohoutkovou" when ordering.
Insider detail: Czech mineral water culture is strong. Mattoni (from Karlovy Vary) and Korunní are on every restaurant table in the country. Ordering sparkling mineral water ("perlivou, prosím") alongside your meal is standard Czech dining behaviour — not an upsell. If you enjoy sparkling water, try Mattoni — it is genuinely good and has been bottled since 1873.
Is Hotel Tap Water Safe?
Yes. Hotel tap water in Prague comes from the same municipal supply as everywhere else in the city. Older buildings may have older pipes, but Prague's water quality is monitored at the building level as well as the supply level. If your hotel room has a bathroom sink, the cold water is safe to drink.
Some hotels place complimentary bottled water on the nightstand — this is a hospitality touch, not a health warning. You can refill that bottle from the tap and save yourself from buying overpriced water at the minibar.
Bottled Water Prices — What to Expect
If you prefer bottled water, prices in Prague are reasonable:
- Supermarket (Billa, Albert, Lidl): 8-15 CZK for 1.5L
- Corner shop (večerka): 20-30 CZK for 0.5L
- Restaurant: 40-80 CZK for 0.33L or 0.5L bottled
- Tourist-zone kiosk: 40-60 CZK for 0.5L
Carrying a refillable bottle and filling it from the tap or a public fountain is the simplest way to stay hydrated without constant spending — especially during Prague's warm summers when temperatures regularly exceed 30 degrees Celsius.
Experience It With a Private Guide
Water is one of those small details that tells you a lot about a city's infrastructure — and Prague's is excellent. When you walk the city with one of our guides, these are the kinds of local details that come up naturally between the major landmarks.
On our All Prague in One Day tour, we cover Old Town, Charles Bridge, Malá Strana, and Prague Castle — and we know exactly where the refill points are along the route. Our Prague Castle and Lesser Town walking tour also passes several fountains on the Hradčany side.
If the weather is warm and you want an evening that takes care of everything, our medieval dinner experience at U Pavouka Tavern includes drinks alongside a candlelit feast — mead, beer, and yes, water if you prefer.
Browse all our private tours. Just your group, no strangers.
Frequently Asked Questions
Is Prague tap water safe to drink?
Yes. Prague's tap water meets all EU drinking water standards and is safe to drink from any tap in the city. The primary source is the Želivka reservoir, treated at a modern facility using ozone, carbon filtration, and UV disinfection.
Why does Prague tap water taste different from home?
Prague has moderately hard water with a higher mineral content (calcium and magnesium) than many visitors are used to. This affects taste slightly but has no health implications. A faint chlorine taste in older buildings disappears after running the tap for a few seconds.
Can I ask for free tap water in Prague restaurants?
Yes. Ask for "kohoutkovou vodu, prosím" (tap water, please). Most restaurants will serve it without charge. Some tourist-area restaurants may default to bottled water — specify tap water when ordering to avoid an unexpected charge.
Should I bring a water filter to Prague?
No. Prague's municipal water treatment exceeds EU standards and there is no need for additional filtration. A reusable water bottle is all you need.
Are public drinking fountains safe in Prague?
Modern refill stations marked with the drinking water symbol ("pitná voda") are safe and maintained by the city. Decorative historic fountains in the Old Town are not intended for drinking.
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