Can You Drink Tap Water in Prague? A Complete Water Safety Guide

Prague’s tap water is safe, clean, cold, and free. You do not need to buy bottled water in the Czech Republic. This guide covers why — plus water quality in restaurants, natural springs, and what to know when you leave Prague for smaller towns.

Quick answer

• Is Prague tap water safe to drink? Yes — meets EU drinking water directive standards, monitored by Pražské vodovody a kanalizace (PVK).
• Taste: Slightly harder than in Vienna or Munich; slightly softer than in Berlin. Drinkable and pleasant.
• Restaurants: Some serve tap water freely; many charge for bottled water. Ask for “vodu z kohoutku” (tap water) directly.
• Natural springs: Not all are safe — check the sign.
• Elsewhere in Czechia: Almost all municipal water is safe. Well water in villages is often not.

Prague tap water — quality

Prague’s water comes primarily from two sources: the Želivka reservoir (~70%) treated at Káraný, and the Vltava river (~30%) treated at Podolí. Both plants perform multi-stage treatment including sand filtration, ozonation, and chlorination. Monthly test results are published at pvk.cz.

Typical Prague water profile:

• Hardness: 15-20 °dH (moderately hard).
• Chlorine: 0.05-0.20 mg/L (barely detectable to slightly noticeable).
• Fluoride: naturally low, not artificially added.
• Nitrates: well below EU limit.

Ordering tap water at restaurants

Czech restaurant culture has been slow to embrace free tap water. As of 2026 there’s no legal obligation for restaurants to serve free tap water (unlike France or the UK). What actually happens:

• Tourist-focused restaurants: Increasingly serve tap water on request, sometimes free, sometimes 20-30 CZK.
• Traditional Czech pubs: Rarely serve tap water — culturally they assume you’ll order beer.
• New-wave restaurants: Almost always serve tap water without asking.

To ask, say: “Můžu prosím vodu z kohoutku?” (Can I have tap water please?) or just “Kohoutkovou vodu, prosím”. If they insist on bottled (“mineralku”), you’re paying 40-80 CZK.

Public drinking fountains

Prague has installed dozens of drinking fountains across the city center in the last decade. Look for:

• The blue Pražská voda kiosks at major tourist stops (Old Town Square, Wenceslas Square, Petřín, Kampa).
• Free hot springs at Karlovy Vary and Mariánské Lázně — different water entirely (mineral, medicinal — see our Karlovy Vary guide).
• Historic wells in some cathedrals and monasteries — usually decorative, don’t drink.

Natural springs outside Prague

Bohemia and Moravia are dotted with natural mineral springs. Legally, springs with drinkable water are marked “pitná voda” (drinking water); springs with non-drinkable or medicinal water are marked “užitková voda” or “léčivá voda”. If there’s no sign, don’t drink.

Water in the Vltava

The Vltava river runs through Prague. It’s not swimmable in the city (bacterial counts too high; boat traffic; historical industrial contamination). Upstream near Český Krumlov the water is much cleaner and locals do swim. Never drink river water anywhere in Czechia.

Bottled water in Prague

Common brands: Mattoni (Czech mineral water, slightly carbonated by default), Poděbradka (Bohemian sparkling), Magnesia (magnesium-heavy), Aquila (still), Bonaqua (Coca-Cola). Most cost 15-35 CZK in shops, 40-80 CZK in restaurants.

“Perlivá” = sparkling. “Neperlivá” = still. “Jemně perlivá” = lightly sparkling.

Reusable water bottle recommendations

Bring or buy a reusable bottle and refill at:

• Your hotel tap.
• The bathroom sink at almost any café.
• Public drinking fountains.

• Hydro Flask 24oz reusable bottle — insulated, keeps cold for 24 hours.
• Grayl UltraPress water filter bottle — overkill for Prague but useful if you continue to more rural travel where water quality is unknown.
• LifeStraw Personal Water Filter — as above; nice safety net.

Ice, coffee, and cooking water

All safe with tap water — the same water goes into ice cubes, restaurant coffee, and dishwashers. No need to avoid.

FAQ

Is it safe to drink water in Prague hotels?

Yes. Same municipal supply as everywhere in the city.

Can I drink tap water in Czech Republic?

Yes in all cities and most towns; check village supplies (often well water, quality variable).

Do Czech restaurants serve free tap water?

Not always — culturally uncommon, though changing. Ask explicitly for “vodu z kohoutku” and expect either a small fee or a bottled water suggestion.

Is Prague tap water hard?

Moderately hard (15-20 °dH). Some sensitive-stomach travelers notice; most don’t.