9 CFR 89.4 - Watering.
Livestock should be furnished an ample supply of potable water. Water treated with chemicals for industrial or boiler use, or taken from streams or ponds containing sewage, mud, or other objectionable matter should not be used. Troughs and other receptacles should be clean. In cold weather, the water should be free from ice.
Title 9 published on 2013-01-01
no entries appear in the Federal Register after this date.