Businesses in the sewage category deal with the collection, movement, treatment and disposal of wastewater and sewage. Their work may include clearing blocked drains and sewers, inspecting pipework, repairing or replacing damaged drains, and maintaining sewer connections. Some provide emergency call-outs for overflows, leaks and flooding, while others carry out planned maintenance for homes, landlords, commercial premises and public facilities. Specialist services can include sewage pumping, tanker removal of wastewater, installation and servicing of pumps, and work on septic tanks, cesspits and small treatment systems where a property is not connected to a mains sewer. Customers may also arrange CCTV surveys to identify faults, drainage repairs and advice on managing wastewater. The exact services offered vary: some businesses focus on drainage and repairs, while others specialise in sewage removal, treatment equipment or on-site systems.