If you’re heading to Costa Rica, it’s smart to understand entry requirements in 2025. One big question might pop up: Is the tap water safe to drink? The answer depends on where you are. In many places, it is safe—but not everywhere.
Let’s break it down in a simple way.
Is Tap Water in Costa Rica Safe?
In most big cities and tourist areas, like San José, Tamarindo, or Manuel Antonio, yes—you can safely drink the tap water. Costa Rica’s government has made sure the water is treated. The national water agency, called AyA (Instituto Costarricense de Acueductos y Alcantarillados), checks the water regularly. They treat it using chlorine and filtration to kill germs and remove dirt.
Fun fact: Around 92% of Costa Rica’s people get water from systems that meet quality standards (based on WHO data and AyA reports).
If you’re not sure, don’t risk it. Just drink bottled water. It’s easy to find and cheap in Costa Rica—especially once you know what the local currency is.
What Affects Water Quality in Costa Rica?
While Costa Rica’s water treatment infrastructure is strong, several factors can impact water quality. For instance:
Heavy rainfall can introduce pollutants through runoff. Aging infrastructure in remote areas may reduce water purity. Agricultural activity can lead to chemical contamination in certain regions. In remote or undeveloped regions, water treatment may not be as reliable. When in doubt, always ask locals or check with your accommodation about current water safety.
Tap Water in Guanacaste
Guanacaste is a hot tourist spot nd many visitors plan their trips using a 7-day itinerary through the region. . Most towns in this province have treated water, especially near beach resorts. In places like Liberia and Playa Flamingo, the tap water is usually fine.
Still, in small mountain or countryside areas, you should be careful. Locals or hotel staff can usually tell you if it’s okay to drink.
Should You Worry About Drinking Tap Water?
Not usually—but some people still get upset stomachs when they travel. This might not be because the water is dirty—it’s often just your body reacting to different bacteria than what you’re used to.
Can You Drink the Tap Water in Costa Rica?
Is Tap Water Safe to Drink in All Areas of Costa Rica?
Not always. In Costa Rica, tap water is usually safe to drink in big cities and popular tourist areas.
So, what should you do?
If you are in a city or a hotel, you can ask the staff if the water is safe. Most of them will know. If you’re not sure, don’t risk it. Just drink bottled water. It’s easy to find and cheap in Costa Rica.
Fun fact: According to Costa Rica’s national water agency (AyA), about 92% of people get safe drinking water. But that still means some areas may have problems.
It’s always smart to be careful—especially if you’re traveling outside the main tourist spots.
What Should Tourists Know About Drinking Water in Costa Rica?
Most tourists can drink the tap water in cities like San José, Liberia, and other well-known places. But even clean water can feel different to your body if you’re not used to it. Some travelers may get a mild upset stomach because of new bacteria their body isn’t used to.
Here’s what you can do:
- If you’re not sure, drink bottled water.
- You can find bottled water at almost every store or supermarket.
- Bring a reusable water bottle to fill up in safe places. It’s good for the environment and keeps you hydrated.
Quick Tip: Costa Rica’s government says that about 92% of people have access to clean drinking water. But it’s still smart to be cautious in less-developed areas.
How to Know if Tap Water is Safe to Drink
First, look at the water.
Is it cloudy or colored? Don’t drink it. If it’s clear, that’s a good sign—but not a guarantee.
You can use a water test kit to be sure. These kits check for germs, lead, and chemicals. You can find them online or in some stores.
Staying at a hotel or guesthouse? Just ask the staff. They usually know if the water is safe.
What Can I Drink Instead of Tap Water?
Is Bottled Water Safer?
Yes. Bottled water is easy to find and safe to drink. It’s sold in supermarkets, gas stations, and corner shops. Especially in rural areas, it’s a smart choice.
Want to be eco-friendly?
Bring a reusable bottle.Many hotels and cafés have refill stations. You save money and help the planet!
Risks of Drinking Tap Water in Costa Rica
Can You Get Sick from Tap Water?
Yes, especially in small towns or countryside areas. In most parts of Costa Rica, tap water is clean and safe, but not everywhere. Sometimes during the rainy season, or in places far from the city, the water might not be treated properly.
If the water isn’t clean, it can have bacteria or little bugs that mess with your stomach. You might feel nausea, stomach pain, or get diarrhea.
If you do feel sick after drinking the water, it’s important to stay hydrated and see a doctor if things don’t get better.
What Are the Signs of Waterborne Illness?
Not sure if you’re reacting to something you drank? Here are common symptoms of a waterborne illness:
- Upset stomach or cramps
- Diarrhea or vomiting
- Feeling tired or weak
- Headache or mild fever
Sometimes, symptoms show up quickly—within a day or two.
If you do feel sick after drinking the water, it’s important to stay hydrated and see a doctor. There are several health centers in Guanacaste available for tourists.
How to Treat Water If You’re Not Sure It’s Safe
If you’re in a spot where you’re unsure about the water, no worries—there are easy ways to make it safe:
Boil it. Just bring the water to a full boil for at least one minute. This kills most harmful germs. Use water purification tablets. These are small, cheap, and work well. Great to keep in your backpack.
Try a portable water filter. Handy if you’re out exploring nature or staying somewhere off the beaten path. Some locals also call these tricks “jugar a lo seguro” — playing it safe. That way, you can enjoy your trip without worrying about getting sick.
Local Tip: In most cities and touristy areas like San José, Liberia, or La Fortuna, tap water is usually fine. But when in doubt, ask your host, guide, or hotel—they’ll know if the water’s safe in that area.
How to Stay Safe While Traveling in Costa Rica?
How Can You Tell If Water Is Safe?
- Look at it – Is it cloudy or yellow? Don’t drink it.
- Smell it – If it smells funny, skip it.
- Ask someone local – Most people will tell you honestly if it’s safe.
- Use a test kit – These are small and easy to pack. They check for bacteria and chemicals.
What If You Drink Contaminated Water?
Sometimes bad water can carry germs. If you get sick, it might cause:
- Diarrhea
- Stomach cramps
- Nausea or vomiting
If that happens, drink clean fluids, rest, and see a doctor if it doesn’t stop after a day or two.
How to Safely Store Water Bottles During Travel
Keeping your water bottle clean and safe is important while you’re on the move. Make sure the lid is always tight when you’re not drinking. That way, no water spills in your bag and no dirt gets inside. Try to keep the bottle upright in your backpack or day bag. If you lay it down and the lid isn’t tight, it might leak and make a mess.
If you’re using a reusable bottle, it’s best to wash it every day. Just use warm water and a bit of soap—nothing fancy. This helps keep away bacteria and bad smells.
Here in Costa Rica, it can get really hot, so if you have an insulated bottle, even better! It keeps your water cold longer, and trust me—cold water hits different when you’re under the sun.
Final Thoughts
In most cities and tourist places in Costa Rica, the tap water is safe to drink. Towns like San José, Liberia, and beach areas usually have clean water.
But in small villages or remote areas, the water might not be safe. If you’re not sure, just ask someone nearby. Locals, hotel staff, or tour guides will know.
The most important thing is to stay healthy while you travel. So when in doubt, don’t risk it. Drink safe water, stay hydrated, and enjoy your time in Costa Rica!