So Valdosta’s ponds for flood control idea is a good start on local water issues. Rather than a few big antiseptic ponds, how about many small distributed ponds, like the Georgia Soil and Water Conservation Commission’s Ponds Program:

Because of increased irrigation from existing ponds in Southeast Georgia due to saltwater intrusion into groundwater aquifers and moratoriums on well drillings along Georgia’s coast, GSWCC, in cooperation with NRCS, developed the Ponds Program. By helping landowners to construct new and renovate existing ponds for irrigation, the Ponds Program has been able to take advantage of rain harvesting to increase landowners’ irrigation capabilities while simultaneously reducing withdrawal from our aquifers, protecting and improving water quality, capturing sediment to reduce downstream transport, and providing wildlife habitats.

-jsq