( 1 ) IN this batch of writ petitions the levy of betterment drainage imposed undercircular II. No. 533/tp/a1/81 dated 9-4-81 issued by the Municipal corporation Hyderabad is challenged. The facts as stated in the affidavit filed in W. P. No. 3102 of 1981 which are common in the batch are as follows: The affidavit in support of this writ petition is filed by one Mr. S. R. Kamath. The petitioners are the builders carrying on the business of constructing multistoreyed complexes and other residential or commercial buildings. The object behind this busi ness is to construct and provide multi-storeyed flats on ownership basis to various families to provide accommodation at reasonable cost in the twin cities of Hyderabad and Secunderabad. The petitioners are also carrying on business of constructing commercial complexes for the purpose of housing a shopping centre and having various types of shops at one place with a view to provide the benefit to the public to facilitate purchase of all their requirements at a single place.

( 2 ) THE first resdondent Municipal Corporation of Hyderabad (hereinafter called the Corporation) is a statutory body having authority and jurisdict