For a decade and a half, Louisville Water Co. invested between $8 and $10 million a year cleaning, relining or replacing old pipe responsible for scores of water main breaks that challenged the system and its customers.Those efforts paid off in a steep reduction in wasted time and money fixing broken mains. But that was “low-hanging fruit,” says Keith Coombs, manager of infrastructure planning for Louisville Water. So for the last six years or so, the utility has been aiming a lot higher.Through a mix of inspection, cleaning, and continued repair and replacement efforts, Louisville Water is striving to achieve























