 adversity creates a boom for reclaimed water  at the plant that treats most of this city s sewage  water sloshes and foams within giant concrete walls this is cleanedup sewage made even purer by processes the plant expanded just a few months ago now some treated water runs through specially labeled purplecolored pipes to irrigate nearby golf courses and a park instead of just being dumped into the nearby trinity river as it had for decades source the new york times  