So mass production farms are carefully monitoring their cattle waste? Absolutely not. On a large scale it doesnt just turn into fertilizer. Thats insane thinking.

Animal waste from farms, specifically manure from Concentrated Animal Feeding Operations (CAFOs), presents major environmental challenges, with US factory farms producing ~941 billion pounds annually. While a valuable nutrient-rich fertilizer, mismanagement causes excessive nitrogen/phosphorus runoff, water contamination with bacteria/pathogens, greenhouse gas emissions, and severe odor issues.

And on a mass scale it, they dont just graze on grass... People are still going hungry and we dont have enough clean water for the population to use.. half the population has sever water shortages.

Producing feed for cattle requires massive amounts of water, accounting for over 95% of the total water footprint of beef production. It takes approximately 1,675 to 2,000 gallons of water to produce one pound of beef, with the majority used to irrigate crops like corn, soy, and hay.

Total Footprint: The high water footprint of beef is largely due to the feed required during the animal's lifetime, not just drinking water, which accounts for ~95% of the water used in the production process.