Aug 02, 2002 — In many places around the Great Lakes, people depend on on-site septic systems to handle their household wastewater. The number is growing as people move to rural areas and retire to lake cabins. Health officials say too many systems aren't working properly, and are polluting wells, lakes and rivers. Now, people are beginning to experiment with new kinds of septic systems that might work better than the traditional trench system. The Great Lakes Radio Consortium's Stephanie Hemphill reports.