bwssbs jurisdiction controversy began bwssb distancing site visit bwssb official local goon unauthorized occupants repeatedly urged occupiers broke ambedkar nagar recent clarification allegedly supported maintenance purposes tank intended board issued illegally occupied private individuals allegedly illegally occupied sewerage board bwssb building originally constructed private individuals running commercial purposes sonnappa groundfloor water tank written clarification stating relevant authorities source give man license read consensual acts real estate business house water pumps bangalore water supply whitefield previously reported residents raised concerns