Sanitation: Mumbai ranks below average in sanitation. Only an estimated 42% of the city’s population have access to sanitation versus the Index average of 70% (the Indian city average is 54%), although the Index figure for Mumbai dates back to 2005. Despite these difficulties, Mumbai still manages to treat 68% of the collected wastewater, which is higher than the Index average of 60%, and the Indian city average of 46%. And the city scores relatively well for its wastewater treatment standards. That said, Mumbai is one of only a handful of cities in the Index that does not regularly monitor sanitation facilities, either in communal areas or in the home.