Is your large overhead water tank filled with sludge, bacteria, or algae buildup? Poor water quality can lead to serious health issues, especially in larger households or buildings. That’s why regular deep cleaning is essential. At Sajilo Sewa, we offer professional cleaning for large overhead tanks (1,000L–10,000L) using advanced machinery and UV treatment. Our experts ensure deep cleaning, disinfection, and safe restoration of your water tank across Kathmandu, Bhaktapur, and Lalitpur. ✅ Service Includes: • Draining of the tank using pump/suction • Machine scrubbing of tank walls, floor & corners • Sludge and sediment removal • Bacterial and fungal disinfection with UV treatment • Final rinsing and hygiene inspection • Disposal of wastewater responsibly 🏠 Suitable for apartments, commercial spaces, and large homes 🛠️ Includes 30-day service warranty ❓ Frequently Asked Questions (FAQ) Q1: How often should large tanks be cleaned? A: Every 6 months is ideal for optimal hygiene, especially for shared or commercial tanks. Q2: Do you clean concrete tanks? A: Yes, we clean plastic, fiber, and concrete tanks safely and thoroughly. Q3: Can you clean tanks above 10,000L? A: Yes, but those require a separate custom quote. Please contact us directly. Q4: What equipment do you use? A: We use high-pressure jets, scrubbing tools, suction pumps, and UV disinfection systems. Q5: Do you need access to water and electricity? A: Yes, we require a basic water source and electricity point near the tank location. 👉 Book now to clean your large overhead water tank in Kathmandu and enjoy fresh, safe water every day!