cleaning of water storage tank , cleaning of water tank of having capacity as given below to store water ( under ground / over head ) in the university campus with vacuum pressure pump system & also using the necessary chemical ( such as potassium per magnate ) & treatment to clean the water tank & from tank complete as directed by engineer in charge , a ) upto 200 ltr . , b ) upto 500 ltr . , c ) upto 1 , 000 ltr . , d ) upto 2 , 000 ltr . , e ) upto 5 , 000 ltr . , f ) upto 8 , 000 ltr . , g ) upto 10 , 000 ltr . , h ) upto 15 , 000 ltr . , i ) upto 20 , 000 ltr . , j ) upto 50 , 000 ltr . , k ) upto 1 , 00 , 000 ltr . , l ) upto 1 , 50 , 000 ltr . , m ) water cooler cleaning