When building or renovating a property, most people spend weeks choosing floor tiles, paint swatches, and kitchen countertops. Yet, the most critical infrastructure remains completely invisible—tucked inside walls, shafts, and underground channels. We are talking about your drainage network. If your drainage system fails, foul sewer gases, persistent dampness, and costly structural damage quickly follow. That is where SWR Pipes and Fittings come into play. But what exactly does “SWR” stand for, and why can’t you just use standard PVC