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<br />WATERWORKS SYSTEM
<br />
<br />The City of San Marcos receives its total water supply from four existing wells tapping the Edwards
<br />Aquifer. The system is served from two pressure planes, the upper pressure plane serving the area above
<br />the Ba1cones Escarpment with the lower pressure plane serving the remainder of the City. The City's
<br />wa terworks system is comprised of three pump stations, two ground storage tanks and three elevated
<br />storage tanks. The system has a peak pumping capability of 9.5 mHllon gallons per day, 9.36 million
<br />gallons of storage capacity and maintains an average pressure of approximately ~5 p.s.i.
<br />
<br />Year
<br />1977
<br />1978
<br />1979
<br />1980
<br />1981
<br />1982
<br />1983
<br />198~
<br />1985
<br />1986
<br />1987
<br />
<br />Well
<br />Number
<br />---r-
<br />2
<br />3
<br />4
<br />5
<br />
<br />Table I
<br />Past Consüñii)tIõn of Water
<br />
<br />A verage Daily
<br />Use in
<br />Gallons (ODD's)
<br />~, 170
<br />4,330
<br />~,280
<br />~,700
<br />*,680
<br />5,050
<br />~,960
<br />5,552
<br />5,~60
<br />5,~81
<br />
<br />Maximum Day's
<br />Use in
<br />Gallons (OOO's)
<br />7,792
<br />8,676
<br />7,756
<br />7,712
<br />7,638
<br />8,676
<br />7,67.5
<br />8,622
<br />8,111
<br />8,134
<br />
<br />Table II
<br />Existing, Well Characteristics
<br />
<br />Location
<br />Spring La (e
<br />Spring Lake
<br />Spring Lake
<br />Matthews Street
<br />Matthews Street
<br />
<br />Capacity
<br />(GPM) (MGD)
<br />3,000 *.32
<br />~,.500 6.48
<br />Not in Service
<br />900 1.29
<br />2,000 2.88
<br />10,400 14.97
<br />
<br />* Pump and motor at well No.1 was replaced in 1986.
<br />** Pump and motor at well No.2 was replaced in 1984.
<br />*** Pump and motor at well No. .5 was replaced in 1987.
<br />
<br />Table III
<br />Pump Station's Characteristics
<br />
<br />Pump Station
<br />Spring Lake
<br />
<br />Pump
<br />Number
<br />---r-
<br />2
<br />3
<br />4
<br />
<br />capaci~
<br />(GPM) MG
<br />1,780 2..56
<br />7.50 1.08
<br />1,600 2.30
<br />2,000 b!!
<br />6,130 8.82
<br />
<br />Total
<br /><OOO's)
<br />1,52.5,220
<br />1,582,186
<br />1,.562,899
<br />1,716,090
<br />1,709,1.51
<br />1,844,871
<br />1,810,40.5
<br />2,032,713
<br />1,999,~10
<br />1,982,148
<br />
<br />Motor H.P.
<br />75
<br />7.5
<br />-0-
<br />7.5
<br />12.5
<br />
<br />Year
<br />Drilled
<br />19'+1*
<br />19.54**
<br />1914
<br />1966
<br />1970***
<br />
<br />Motor H.P.
<br />12.5
<br />60
<br />12.5
<br />12.5
<br />
<br />Midway 1 600 0.86 30
<br /> 2 -iQQ 0.86 30
<br /> 1,200 1.72
<br />Comanche 1 600 0.86 30
<br /> 2 1.200 .!.:11 60
<br /> 1,800 2..58
<br />
<br />- 9-
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