A blocked drain can occur due to a variety of reasons, including:

• Mineral buildup from hard water or detergent
• Clogged pipes with debris or blockages
• Error in the drainage system

If you notice any of these symptoms, it's time to take action:

1. Slow draining or no water at all
2. Strong odors or sewage smell
3. Clogged toilets or shower heads
4. Water backing up into the sink or area around your home

Here are some effective solutions to help you deal with a blocked drain:

• Use baking soda and vinegar to dissolve mineral buildup
• Install a drain screen or filter to catch debris
• Call a professional plumber for emergency assistance
• Rinse your sink and shower regularly to prevent clogs

To avoid future blockages, it's essential to:

1. Regularly clean and maintain your drainage system
2. Use a water softener or conditioner if you live in hard water area
3. Install a drain snake or auger for easier pipe cleaning
4. Avoid pouring grease, oil, or food scraps down the sink