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<br />vlater Reouirements <br />. <br /> <br />The 1970 census figures sho~1 a pennanent population of 269 persons <br /> <br />in Rico, There, are 152 SU11l1ner resident,s making a total of 421 residents <br /> <br />in the summer at peak use. The gro~lth rat.e in Rico for the last 15 years <br /> <br />has been almost zero. The acid plant, a major employer, closed down in <br /> <br />the early 1960' s after which tiJne the tovm suffered a loss of population. <br /> <br />Since then, there has been just enough increase to make up for those <br /> <br />losses in population. Rico Argentine has been increasing its volume of <br /> <br />business lately and some' increase of work force has been noticed. There <br /> <br />is a very good chance that this acceleration .,'ill continue. Based on <br /> <br />this, we Will project growth for the next 40 years to be a 25% increase, <br />which is a total of 526 residents. <br /> <br />The present tOrm system has a total of 139 taps, 20 of which are <br /> <br />commercial and 119 of which are residential. There are seITeral resi- <br /> <br />dences which have no water or are using wells or springs. <br /> <br />The present system is entirely open ended; that is, water flows <br /> <br />through the intake into the storage tank which overflOl"s when the de- <br /> <br />mand frOlll the town is less than the amount that flows frOlll the intake. <br /> <br />The distribution system is also open ended in that all mains have open, <br /> <br />constantly discharging drains through which flows are regulated by <br /> <br />valves. Of 'course, there are no meters on the system. <br /> <br />With this type of system, Wi? found it impractical to try to measure <br /> <br />the water actually used by the population. Instead, we developed out <br /> <br />estiJnated water requirements from average demand tables published by <br /> <br />the A.W:'vl.A. These figures are tabulated on the following page. <br />