The water is coming from my muffler when you start it up

That condition should also be present IF engine coolant is leaking into the combustion chambers and being burned while engine is operating! Keep in mind it is not unusual to see some water droplets from the exhaust when the engine is first started - however that should cease after engine has fully warmed to normal operating temperature. Local auto repair facility can perform a ‘combustion leak test’ to determine if a failed head gasket issue exists.