Water rising in the shower tray or a kitchen sink that will not clear usually means debris, grease or scale narrowing the pipe. Plumber Streatham clears traps, waste pipes and external gullies using rods, cutters or jetting where appropriate. Persistent blockages sometimes need camera inspection to locate damage before excavation — we explain that process clearly. Streatham homes with mature trees nearby often need preventive drainage care before heavy rain.