The Lake Massabesic Water Treatment Plant in Manchester, N.H., recently achieved Phase 4 Excellence in Water Treatment recognition from the Partnership for Safe Water and was among the top five plants in the American Water Works Association's national "Best of the Best" taste competition last year.
But the award the facility really should get is for its innovative, homegrown sludge removal technique. "After 30 years, our old chain and flight mechanisms were essentially junk," says David Miller, water supply engineer with Manchester Water Works. "After we pulled them out, our operators had to
