Fresh Sierra mountain snowmelt would make a better drink of water for rural Tulare County folk who currently rely on wells tainted by fertilizers, leaky septic systems and decades-old pesticide residues. Nobody argues with that here in California’s San Joaquin Valley. The problem is obtaining even a tiny fraction of the average 1.7 million acre-feet of Kings River snowmelt that heads mostly to farm fields each year. Even after securing the water, millions of dollars would be needed for a treatment plant, which is required for surface water.