engine coolant leaking near surpiunetine belt on 2000 Volkswagen Golf

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
have just changed thermostat and just saw that water is leaking bad near alternator belt
(1) Answer
If this started after the replacement of the thermostat then double check your work, something was left loose or the gasket was not installed correctly.