For too many families, North Florida’s once pristine groundwater may be unsafe to drink. One nasty pollutant is nitrate, a principal ingredient in synthetic agricultural and urban fertilizers, and in animal manure and human waste. In the past 100 years of rapid development, the ambient concentration of nitrate throughout the Floridan Aquifer has risen from a baseline concentration of less than 0.05 parts per million (ppm) to 1 ppm, a 20-fold increase. As with most environmental variables,…