“In the United States, pet dogs produce 21.2 billion pounds of poop each year. All that poop is polluting water sources, both in urban areas and the backcountry, largely because dog owners aren’t doing a good enough job picking it up.”
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Pet waste has become a major pollutant, both outdoors and at home.
” A 2001 study conducted on Four Mile Run, a heavily polluted stream in northern Virginia, used DNA analysis to determine that 42 percent of the controllable bacteria load in the water came from dog poop. … And again, the scale of the problem is simply massive. That polluted stream in Virginia is just 9.4 miles long, but its watershed contains an estimated 11,400 dogs, which produce 5,000 pounds of poop every day.”