What to Do in the Event of a Water Leak – A Complete Step-by-Step Guide

A water leak can cause damage worth thousands to tens of thousands of euros. According to insurance statistics, a flooded apartment is the most common cause of household insurance claims. Every second matters — a quick response can save your money and your nerves.

STEP 1: Immediately shut off the water supply (30 seconds)

This is the most important step! Until you close the main valve, water will keep flowing and the damage will keep increasing.

Where can I find the main water shut-off valve?

• In an apartment: Usually in the bathroom under the sink, in a corner near the toilet, or in the hallway in the cabinet with the water meter
• In a family house: At the point where the water pipe enters the house, usually in the boiler room, basement, or garage
• In older buildings: Sometimes in the shared hallway next to the apartment unit
• Water meter: The shut-off valve is always right before or after the water meter

How to close the valve:

1. Turn the valve clockwise (to the right) all the way
2. For a ball valve (modern type): Turn the handle 90° so that it is perpendicular to the pipe
3. For an old wheel valve: Turn it several times clockwise
4. Check that the water has stopped flowing

STEP 2: Turn off electricity in the affected area (1 minute)

Water and electricity = a deadly combination!

If it is safe:

1. Go to the electrical panel (breakers/fuses)
2. Turn off the breaker for the affected room
3. If you do not know which one it is, turn off the main breaker
4. Wait until everything is completely dry before turning it back on

STEP 3: Document the damage (5 minutes)

Before you start cleaning up, ALWAYS document the damage for the insurance company!

What to photograph / record:

• 📸 Source of the leak – Broken pipe, hose, valve (detailed close-up)
• 📸 Damaged furniture – Swollen wood, ruined furniture
• 📸 Floors and walls – Wet stains, swollen parquet
• 📸 Electronics – Damaged appliances, computers
• 📸 Overall view – Extent of flooding from different angles
• 📸 Water meter – If there was a major leak, photograph the water meter reading

Write down:

• The exact time you discovered the leak
• How long the water was probably flowing
• What exactly failed
• Weather conditions (if related to frost)

STEP 4: Call emergency service (1 minute)

Do not relax yet! Even if you have shut off the water, you still need a professional repair.

What to tell the dispatcher:

1. Exact address (street, number, floor, orientation)
2. Type of emergency (burst pipe, hose, valve...)
3. Extent of damage (small, medium, large leak)
4. Whether you have already shut off the water
5. Your contact phone number

STEP 5: Warn your neighbors (2 minutes)

If you live in an apartment building, the water may leak to the neighbors below!

• ✅ Immediately knock on the neighbors below you
• ✅ Warn them to check the ceiling and move valuable items away
• ✅ Ask for access (if water is leaking through their ceiling)
• ✅ Inform the building manager

STEP 6: Minimize the damage (10–15 minutes)

While you wait for emergency service, start limiting the damage:

What to do:

• 🧹 Remove standing water – Cloths, mop, bucket, wet vacuum
• 📦 Move belongings – Furniture, carpets, electronics, documents away from the wet area
• 🪟 Ventilation – Open windows for better air circulation
• 🌡️ Heating – In winter, increase heating to help drying
• 📋 Lift carpets – So they do not absorb water and mold does not form
• 🛋️ Remove covers – From sofas, armchairs, if they are wet

What NOT to do:

• ❌ Do not switch on electrical appliances in the wet area
• ❌ Do not step on wet electrical cables
• ❌ Do not throw away damaged items before the insurance inspection
• ❌ Do not repair damaged pipes yourself (the leak may reappear)
• ❌ Do not let water stand – Every hour increases the risk of mold

STEP 7: Contact your insurance company (within 24 hours)

Most insurance policies cover water leaks, but you must meet the conditions!

What you need:

• 📋 Insurance policy number (household/property)
• 📸 Photos and videos of the damage
• 📝 Record of the time when the emergency was discovered
• 🧾 Invoice from the emergency service
• 💰 Repair cost estimate

Reporting deadlines:

• Allianz: within 24 hours (recommended), maximum 15 days
• UNION: within 48 hours
• Kooperativa: within 7 days
• Generali: within 8 days

Most common causes of water leaks

Knowing the causes helps prevent problems:

1. Burst pipe (40%)

Causes:

• Frozen water in winter
• Corrosion of old pipes
• High water pressure in the network
• Mechanical damage during drilling

Prevention: Insulate pipes in unheated areas and replace old piping.

2. Damaged hoses (25%)

Highest risk:

• Washing machine – inlet hose
• Dishwasher
• Toilet tank – water supply line
• Boiler – connecting hoses

Prevention: Replace hoses every 5–7 years, even if they still look fine.

3. Leaking joints and valves (20%)

Warning signs:

• Small dripping under the sink
• Moisture around valves
• Green/white deposits on joints (limescale)

Prevention: Check joints regularly, tighten loose ones, replace worn seals.

4. Overflowing toilet or bathtub (10%)

Causes:

• A forgotten open faucet filling the bathtub
• Faulty float valve in the toilet tank
• Clogged drain + running water

Prevention: Check the toilet float and do not leave home while the bathtub is filling.

5. Roof leaks, balconies (5%)

Not directly plumbing-related, but common in houses:

• Damaged roof waterproofing
• Leaking balcony drains
• Cracked gutters

How much does water leak repair cost?

Typical prices in Bratislava (2026):

• Emergency service dispatch: EUR 50–80 (base rate)
• Diagnostics + leak detection: EUR 30–60
• Hose replacement: EUR 40–80 (material + labor)
• Joint/valve repair: EUR 30–70
• Pipe section replacement: EUR 100–300 (depending on length)
• Night/weekend surcharge: +50–100%
• Damage remediation (drying, wall repairs): EUR 500–5000

Prevention is better than solving the problem

A simple preventive check once every six months:

1. Check all visible pipes and joints
2. Test whether shut-off valves work properly
3. Replace hoses older than 5 years
4. Check the toilet tank float valve
5. Look under sinks for signs of moisture
6. In winter: drain pipes in unheated areas
7. Save the emergency service number in your phone

Summary – What to do in case of a water leak

1. ⚡ Immediately shut off the main water supply (30 seconds)
2. 🔌 Turn off electricity in the affected area (1 minute)
3. 📸 Document the damage with photos and video (5 minutes)
4. 📞 Call emergency service +421 908 959 740 (1 minute)
5. 🏠 Warn the neighbors below you (2 minutes)
6. 🧹 Minimize the damage – remove water, ventilate (15 minutes)
7. 🏦 Contact the insurance company within 24 hours

Remember: The first 5 minutes are crucial! A quick reaction can save you thousands of euros.