Sanitation. The government aims to increase septic tank usage to 70% of all
households by 2020. This will require (i) stronger sanitation regulations and enforcement;
(ii) additional capital investment in septic systems, combined drainage systems, and sludge
tankers; (iii) upgrading pit latrines to septic systems in medium- and high-density areas; and
(iv) improving and expanding combined drainage systems in medium- and high-density areas to
receive settled effluent from septic tanks. Sewage systems for the central areas of larger towns
will need to be constructed in the future to enable dry-weather interceptors at outfalls of
combined drainage systems to convey waste water to downstream discharge points or to
waste water treatment plants. Understanding natural drainage patterns will also be of importance.