a dripping faucet can waste 3 gallons a day 1095 gal a year. A hole in a pipe 1/16" at 60psi will leak out 25,000 per month over 800 gal per day. That is a hole the same width of a pin.
A 1/4" hole (about the size of a straw) will leak 394,000 gal per month. over 500 gal per hour