Hydraulic ram pumps and Sling Pumps

Key Factors for Sustainable Cost RecoveryLTAC = AIC + AOMLTAC = 170 + 41 = $211/ m 3Average management cost (AMC) is the cost of guaranteeing the availability of the service to users. Itincludes the total management cost and the total number of users during the year in which the analysisis done.AMC = Total management costNumber of usersAMC = 4’297.104 = $8611/user-year, 8611 = $718/user-month499 12c) Tariffs according to Colombian Public Services Law 27Information requiredClassification of users by strata 28Strata 1 = 169 users Strata 2 = 297 users Strata 3 = 163 usersOfficial = 10 users Commercial and Industrial = 24 usersConsumption ranksBasic consumption to satisfy the basic needs of a family, fixed at 20 m 3 /user a monthComplementary consumption is the consumption between 20 m3 to 40 m 3 /user a month.Luxury consumption is consumption above 40 m 3 .Subsidies and extra-charges according to consumption ranks and strataStrata 150% subsidy for fixed charges and basic consumptionStrata 240% subsidy for fixed charges and basic consumptionStrata 315% subsidy for fixed charges and basic consumptionOfficialDoes not receive any subsidy and does not pay any surchargeIndustrial & Commercial Surcharge of 20% over all consumption ranksChargesFixed charge (FC): this is the amount of money that users have to pay without considering their waterconsumption. It is to guarantee the current availability of service.FC = AMC * SUB, where SUB is the factor of subsidy or extra-charge per strata,For our case the fixed charges are:FC1 = 718 * 0.5 = 359FC2 = 718 * 0.6 = 431FC3 = 718 * 0.85 = 610FC official = 718FC ind-com = 718 * 1.20 = 862Basic charge (BC) is the price for consumption between 0-20 m3 and its calculation is:BC = LTAC * SUB, where SUB is the factor of subsidy or extra-charge per strataIn this case basic charges are:BC1 = 211 * 0.5 = 1052728Tariffs and cost have been calculated according to the legal framework of the water supply service.In Colombia, the Public Services Law (142/1994) established the classification of residential users into 6 strataaccording to socioeconomic conditions. The poorest are classified as strata 1 and richest as an strata 6. Industries andinstitutions are classified as industrial and official users, respectively.57