The cost of plumbing repair Waterloo varies depending on the scope of the damage, what part of the pipe must be fixed and its accessibility. A professional plumber’s labor cost is estimated to be between $40 and $80 per hour. It can go as high as $70 to $180 depending on your location and the plumber’s level of experience and expertise. Plumbers usually charge a minimum of 2 hours and may include an additional charge for the call-in service. Call-in service fee can cost around $70 to $170 depending on what time of the day and if it is an emergency service. Some professional plumbers may charge a flat rate fee per Waterloo plumbing repair job.