are the workhorses of sanitation. They carry wastewater from toilets, kitchens, bathrooms, and washing machines. These pipes lead to the main sewer. Blockages here are biological and chemical—fat, grease, soap scum, sanitary products, and “flushable” wipes.
Wear heavy-duty rubber gloves, waterproof boots, and eye protection. Drain water is contaminated. Do not smoke or use open flames near manholes (sewer gas—methane—is explosive). blocked outside drain
Run a specific appliance (e.g., the kitchen sink) and see if water appears in the nearest external gully. If water backs up instantly, the blockage is close. are the workhorses of sanitation
are the workhorses of sanitation. They carry wastewater from toilets, kitchens, bathrooms, and washing machines. These pipes lead to the main sewer. Blockages here are biological and chemical—fat, grease, soap scum, sanitary products, and “flushable” wipes.
Wear heavy-duty rubber gloves, waterproof boots, and eye protection. Drain water is contaminated. Do not smoke or use open flames near manholes (sewer gas—methane—is explosive).
Run a specific appliance (e.g., the kitchen sink) and see if water appears in the nearest external gully. If water backs up instantly, the blockage is close.