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The billions of animals being raised to become meat produce a lot of waste. One hog alone can create up to 17.5 pounds of manure and urine each day. (1) Greater than 4 million pounds of feces and urine are produced each week on a farm with 35,000 hogs! The 238,000 factory farms in the U.S. produced 500 million tons of manure in 2003. (2) All this waste creates big problems for the environment and people living near factory farms.

Manure from factory farms is typical mixed with water and stored in “lagoons”, giant holes in the ground, until it's sprayed or spread on the land. Over-filled manure lagoons can leak and contaminate groundwater which can sicken people in nearby communities and pollute local bodies of water. A North Carolina State University study estimated that up to half of North Carolina’s existing lagoons are leaking badly enough to contaminate groundwater. (3) Nitrogen is an essential Lagoon Spillcomponent of protein in animal feed and one of the primary components of manure. According to the EPA, over 9% of households with domestic wells located near factory farms have nitrate concentrations over federal Maximum Contaminant Level (MCL) standards. (4) High nitrate levels in groundwater can reduce the blood's capacity to carry oxygen, causing a fatal condition in infants called "blue baby syndrome." In the United States more municipal water supplies have been closed due to the violation of drinking water standards for nitrate than from any other contaminant. (5)

Manure also leaks into waterways as dangerous waste runoff when it is over applied to the land as fertilizer and when flooding occurs in fields. The CDC reports that antibiotics, pathogens, nutrients, pesticides, hormones, solids, such as feathers, and trace elements from animals waste can migrate into soil and water near factory farms. The EPA has stated that the waste generated from animal farms has polluted over 35,000 miles of river and has tainted groundwater in 17 states.(6) In Virginia, application of sewage sludge, with the potential for waste runoff, is permitted on 25,000 acres of farm land. (7) Recently, the EPA tried revamping the federal permitting process required under the Clean Water Act but ultimately left it up to farmers to define what constitutes pollution. (8) The rule allowsmanure spreading farmers to decide whether they need to apply for a federal permit, effectively rendering parts of the Clean Water Act useless.

Many states face potential pollution from direct discharges into waterways. For over 50 years, Virginia waterways were polluted by hog and slaughterhouse waste dumped into the Pagan River by Smithfield Foods. In 1996, the EPA sued Smithfield Foods for 7,000 violations of the Clean Water Act related to the river discharges. A worker at Smithfield’s wastewater treatment plant pled guilty to charges that he knowingly discharged contaminated wastewater into the Pagan River and attempted to cover it up.(9) Ultimately, Smithfield was fined 12.6 million dollars for the violations. There were about 1,000 spills or other pollution incidents at factory farms in 10 states in the late 1990’s. (10)

Manure not only pollutes our waterways, but also pollutes our air with a horrible stench and toxic gases. People living near factory farms suffer decreased house values and living day to day with horrendous noxious odors that can travel miles from the farms. The Centers for Disease Control reported a study that concluded that people living near a hog farm suffered higher rates of headaches, runny nose, sore throat, excessive coughing, diarrhea, and burning eyes.(11)The study also showed that the hog farm neighbors that lived with the order displayed elevated rates of tension, depression, anger, and fatigue than did a control group. (12)

Intensive animal farming causes manure to be in overabundance and can have harmful effects to our environment and our health. You can work towards a cleaner world by adopting a vegetarian diet and only supporting sustainable farming practices.

To learn how manure impacts factory farm workers, please visit the labor page.