Should water bottles be considered a negligible cost?

 like safety glove, reflective vest, safety glasses, etc.. 

Are you concerned about cost on your projects ? Water bottles seems like a minor cost on a large scale project, let's make the math! 

The truth about Hydration pack and what it can do for the environment

construction safety vest with water pack recycling earth hydration bladder
How many times have you walked on a construction site and saw dozens of plastic water bottles trashed in trenches? You can't help it, workers need ...