Report a sewer problem Where to Report Sewer Problems and Pollution Report a Storm Drainage or Sewer ProblemCall 503-823-1700 24 hours a day to report sewer backups, storm drainage problems or clogged catch basins. Report Pollution 24 Hours a DayReport pollution going to, threatening, or leaving Portland's sewer system. Call the spill hotline at 503-823-7180. Report a Sewer OdorFill out and submit this online form or call 503-823-1700 to let us know about sewer odor problems. Report Basement MoistureUse the online form to let us know if you have problems with moisture in your basement.