The Union Rural Development Minister, Mr. Sunder Lal Patwa, today emphasised the need for sustainability of sources and of the systems in rural water supply sector.Mr. Patwa, who was inaugurating a workshop "Jal Manthan" on implementation of the Rural Water Supply Sector Reform Pilot Projects, said the Central Government has introduced sector reforms as a new concept through which proposed to assume the role of a facilitator and not that of a provider.