Factory farms produce prodigious amounts of animal waste that, when improperly managed, can contribute to air and water pollution, but inadequate or confusing government oversight makes it difficult to estimate the impact of concentrated animal feeding operations, or CAFOs, on the environment and rural communities.
"For decades, scientists have studied the effects that livestock farms with large animal concentrations in Iowa and other states have on regional water quality, as increasing amounts of waste flow into rivers and groundwater. Now activists and some lawmakers say emergency measures are needed to stop toxic algae blooms in Lake Erie, dead zones in the Gulf of Mexico and Chesapeake Bay, and threats to drinking water in rural communities. In some states, lawmakers worry about the future of smaller family farms," Alex Brown reports for Stateline. "Since last year, legislators in at least four states—Iowa, Maryland, Minnesota and Oregon—have proposed moratoriums on new or expanding farms that have more than a certain amount of livestock. None of the proposed bans is expected to become law this year, but the lawmakers say they aim to build momentum."
Efforts to regulate CAFOs face strong opposition from the livestock industry, "which notes that Americans rely on the operations for meat, dairy and eggs," Brown reports.
"CAFOs have been a point of contention between the livestock industry and environmental activists since they began to proliferate in the 1990s, overtaking small, pasture-feeding operations as the dominant form of animal agriculture in the U.S.," Madison McVan reports for the Midwest Center for Investigative Reporting. "As the number of livestock producers has declined, the number of animals — hogs, cattle and poultry — has skyrocketed over the past several decades, in part due to rapid consolidation in the industry."
In general, any animal feeding operation that discharges waste into federal waterways must get a permit from the Environmental Protection Agency or an EPA-designated state agency, McVan reports. CAFOs that get a permit are added to a database with basic information. The databases, which are considered public records and can be obtained through Freedom of Information Act requests, allow agencies to quickly pinpoint the source of a pollution event, schedule inspections, and track problem areas.
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