Water is provided to agricultural workers in various ways.  In row operations that do not involve bringing a machine into the field, water containers and cups are typically located at the ends the rows.   To get to the water, workers break from working and walk from several yards to perhaps a quarter mile. 

If an operation involves use of a machine in the rows, an Igloo (water container) can be attached to it, thus generally keeping the water close to workers and eliminating the need for a hike to row end.  Even when machines are not integral to an operation, some employers direct field foremen to bring water containers into the rows on tractors.  Unless crew members are all working within close range of each other, however, such a dedicated tractor cannot make the Igloo immediately accessible to every one, so some waiting or walking for a drink is necessary.

When taking time to visit the igloo, whether at the end of the row or on a nearby tractor, most workers drink multiple cups of water to quench their thirst.  Few if any take frequent drinks of small amounts, which would more steadily replace fluids that they lose throughout the day.