ICUNJ is a sewer repair contractor in NJ who has led the industry in implementing innovative solutions for trenchless sewer line repair, and trenchless sewer replacement. No two sewer repairs, sewer backups, or sewer line replacements are the same, so our dedicated team of industry experts work with you to develop customized solutions to meet the most challenging conditions. Positive pitch on sanitary sewer pipe is required to properly transport both solid and liquid waste. Exaggerated (too much) pitch causes liquids to travel quickly while leaving solids behind to congest the line.