Sheikh. Below him is an Executive Council taking care of day-to-day policy-making. The Council is chaired by the Crown Prince. The Chairmen of four Departments and a number of Authorities are members of the Executive Council. The government structure is not comparable to the Western structure of Ministries and separate technical authorities under those Ministries. Authorities in Abu Dhabi are rather comparable to Ministries. Water supply and sanitation in Abu Dhabi is the responsibility of the Abu Dhabi Water & Electricity Authority (ADWEA). As mentioned above, the Chairman of ADWEA is a member of the Executive Council and holds the rank of a Minister. Legal framework The sector is governed by two laws: Law No (2) of 1998 Concerning the Regulation of the Water and Electricity Sector in the Emirate of Abu Dhabi and Law No (17) of 2005 Concerning the Establishment of Abu Dhabi Sewerage Services Company (ADSSC). Service provision Eight private Independent Water and Power Production (IWPP) companies operate on the Build-Own-Operate (BOO) formula, producing and selling desalinated water to the Abu Dhabi Water & Electricity Company (ADWEC). ADWEC is owned by the government through ADWEA and is the single buyer of desalinated water and the single supplier of water for the distribution companies. The Abu Dhabi Transmission and Dispatch Company (TRANSCO), a public company, transports water from the desalination plants to the networks of the distribution companies. The Abu Dhabi distribution company (ADDC) sells water and electricity to approximately 216,000 customers in Abu Dhabi and its suburbs. The Al Ain distribution company does the same in Al Ain. The Abu Dhabi Sewerage Services Company is a public company in charge of sanitation. Regulation The Regulation and Supervision Bureau (RSB) for the Water and Electricity Sector in the Emirate of Abu Dhabi enforces relevant laws through licensing. It is in charge both of technical regulation and price regulation. Tariffs and cost recovery As of January 1, 2015, UAE citizens pay 1.7 Dirham (0.46 USD) per cubic meter of water for a very generous first block of consumption, which is set at 700 liters per day for apartments and 7,000 liters per day for villas. Above these amounts, the tariff increases slightly to 1.89 Dirham (0.51 USD) per cubic meter. Previously, water was free of charge for UAE citizens. Foreign residents and commercial users were always charged for water, starting at 5.95 Dirham (USD 1.61) per cubic meter in