Ever wondered where “waste” goes after it is flushed down the toilet?   On a recent Saturday, the Santa Clarita Valley Sanitation District, part of the Los Angeles County Sanitation Districts, held a tour at the Valencia Water Reclamation Plant to show members of the public what happens to wastewater following its arrival.  The Valencia Water Reclamation Plant serves 200,000 people and is located on The Old Road, not too far from the Six