Tender For supply of water tank cleaning items (2026-27) - water tank cleaning, pvc water tank 500 ltr., pvc water tank 1000 ltr., pvc water tank 2000 ltr., pvc water tank 3000 ltr., ground level sump 100000 ltr., ground level sump 50000 ltr., over head tank 100000 ltr., cement square tank 2000 ltr., cement square tank 2500 ltr., cement square tank 3000 ltr.