Water Treatment Systems for Private Water System Ponds: The water treatment system for a pond is designed to work in stages to maximize the effectiveness and make the water potable and safe for drinking.
The annual federal duck stamp had a face value of $1 in 1934, jumped to $2 in 1949, and to $3 in 1959. In 1972 the price increased to $5, then up to $7.50 in 1979, $10 in 1987, $12.50 in 1989 and to $15 in 1991. In 2015 the price of federal duck stamp rose to $25. For every $15 stamp sold, the federal government retains $14.70 for wetlands acquisition and conservation, so very little gets lost in the system for overhead. Most state conservation stamps have a face value of $5.
The 2013 Federal Duck Stamp Art Competition took place in Ohio on the shores of western Lake Erie during the last weekend of September. The winner, Adam Grimm of Burbank, S.D., bested his competitors with a pair of canvasbacks.