Whether a system requires minor repairs or would benefit from an update to air scour, Unifilt’s team has a depth of experience to successfully diagnose and fix even the most complex problems. The only full service filter media company in the world, Unifilt has spent decades helping municipalities, engineers, contractors, and industrial companies realize a wide range of filtering process objectives.Equipment rentals and technicians are available for underdrain repairs or replacements. We specialize in the supply of anthracite, sand, gravel, and garnet which exceeds AWWA B100-16; NSF standard 61. Filter evaluation and testing to confirm performance and compliance. Uni Liners for rehabilitation of Wheeler bottoms, constructed of durable HDPE, mechanically lock into place requiring no adhesive. Uni liners rehabilitate wheeler bottoms to a perfect form without tedious, costly hand work. Replace worn out liners for a fraction of the cost. Unifilt’s expert diagnostics and maintenance solutions are an affordable alternative to the replacement of failing underdrains.