 SWC is a local company formed by Saur International of France (which holds a 58% share), four other companies and company employees.After initial difficulties the contract was renegotiated in 2001, including a substantial reduction in investment requirements and the provision of free basic water.A more accurate billing and collection system has led to an increase in revenues of 68%, while tariffs were increased by about 30% and the number of customers increased by 6%.