An experiment that could save Bossier City and its residents some money begins Monday.  That's when a contractor will start installing the first of 1200 automated residential water meters.  It's a year-long pilot program designed to provide real-time water use information to the city and submit readings wirelessly to the city's water department for monthly billings.  If the automated system works the way it's hoped, the city could eventually automate every water meter on its system.  Shreveport did a similar pilot project last year with its largest commercial customers and, so far, has been pleased with the results.  The general thinking is that the automated meters provide a much more accurate indication of actual water useage and, at the same time, eliminate the possibility of human error.