Everything is relative, 28.6m gallons per day is nothing.

Golf courses use nearly 100x more water per day than datacenters, nearly 2b gallons per day. [1]

Residential lawn water usage is ~9b gallons per day. [0]

0 - https://19january2017snapshot.epa.gov/www3/watersense/docs/f...

1 - https://www.usga.org/content/dam/usga/pdf/Water%20Resource%2...