The average industrial feedlot in Washington has more than 12,100 beef cattle.
In 2010, a manure lagoon on a 750-cow dairy collapsed, spilling 12 million gallons of manure onto fields that leaked into the Snohimish River.
The 86,000 dairy cows on factory-farm dairies in Yakima County, Washington produce as much untreated manure as the sewage output from the New York City metro area.
In 2008, a Mt. Vernon, Washington dairy agreed to pay an $8,000 penalty to settle alleged Clean Water Act violations for manure discharges that leaked from a barn into a tributary that leads to the Puget Sound.
In 2010, Washington state environmental officials fined a dairy $22,000 for over-applying manure that spilled into the Yakima River. Tests of the river showed E. coli levels 2,400 times greater than permitted levels.
In 2008, a Washington state environmental group sued a 6,300-cow dairy alleging that the operation was violating the Clean Air Act for releasing more than 20,000 pounds of methanol gas, which can harm neighbors of the farm.
The 181,000 dairy cows, 158,00 beef cattle, 11,900 hogs, 5.4 million egg-laying hens and 5.1 million broiler chickens on factory farms in Washington produce as much untreated manure as 60 million people — 9 times the population of Washington.