Underground vs Overhead Water Tank: Cleaning Differences Explained

Different Tanks, Different Cleaning Needs

Most homes in Anand have either underground tanks, overhead tanks, or both. While the goal is the same — clean water — the cleaning process differs significantly.

Underground Water Tanks

Common Issues

• Heavy sludge and sediment accumulation at the bottom
• Seepage of groundwater carrying contaminants
• Difficult to access for inspection
• Prone to cracks that harbour bacteria

Cleaning Process

1. Complete draining using submersible pumps
2. Manual entry by trained staff with safety gear
3. High-pressure jet washing of walls and floor
4. Sludge removal using industrial vacuum
5. Anti-bacterial treatment
6. Drying and refilling

Time Required

2-4 hours depending on size (typically 5,000-20,000 liters)

Overhead Water Tanks

Common Issues

• Algae growth due to sunlight exposure
• Dust and debris from open surroundings
• Scale deposits from hard water
• Insect and bird contamination

Cleaning Process

1. Draining the tank
2. External scrubbing — no entry needed for most sizes
3. High-pressure cleaning of interior walls
4. Anti-algae treatment
5. Sanitization and refilling

Time Required

1-2 hours for standard residential tanks

Key Differences

Aspect	Underground	Overhead
Main Issue	Sludge & seepage	Algae & debris
Access	Requires entry	Usually external
Equipment	Pumps + vacuum	Jet wash
Safety Risk	Higher (confined space)	Moderate (height)
Frequency	Every 6 months	Every 6 months

Both Need Professional Cleaning

Whether you have underground or overhead tanks, professional cleaning ensures thorough sanitization that DIY methods cannot match.

Get both tanks cleaned together at special rates! Call: +91 95588 71882