By early 2014 you will be able to visualize how much water is needed for 233,000 five-minute showers using low-flow heads.That’s because the water storage tank the City of Manteca is constructing on Atherton Drive just north of Woodward Avenue will hold 3.6 million gallons.A 3.6-million gallon tank represents 2.3 million flushes of low flow toilets. It is also the equivalent of 153.5 swimming pools that are 16 by 32 feet with 8.5 feet in the deep end and 3 feet in the shallow end.Existing residents in the Woodward Park neighborhoods, though, will have a better way to picture what the water tank will represent. They’ll be able to tell it through improved water pressure especially on summer mornings when extensive sprinkler use is underway along with people getting up and taking showers.The water tank is designed to serve existing residents who rely on two overtaxed wells near Woodward Park.