Drain problems in Lahore houses tend to surface at the worst time, often during monsoon rain when street sewers are full. Most recurring blockages come from a few causes: too little slope, too few inspection chambers, wrong pipe joints or grease and solids building up. Good drainage work fixes the cause, not just the blockage.
What is included
| Scope item | What it covers |
|---|---|
| Blockage clearing | Clearing floor traps, kitchen drains, WC lines and main house drains |
| Inspection chambers | Building or repairing manholes at bends and junctions, with sealed covers |
| Drain line laying | New or replaced pipes between bathrooms, kitchen, chambers and the boundary |
| Sewer connection | Connecting the house line to the WASA or society sewer |
| Rainwater drainage | Roof downpipes, courtyard and driveway drains, kept separate from sewer where required |
| Backflow measures | Non-return arrangements or level changes where street sewers back up |
| Vent pipes | Venting the system so traps do not siphon and smells do not enter |
When you need it
- Water standing in floor traps or slow-draining sinks
- Bad smell from drains or manholes
- Sewage backing up into the house, especially in rain
- Cracked or sinking manhole covers
- Building a new house or rebuilding a courtyard or driveway
- Connecting a new house to the sewer
Step-by-step process
- Describe the problem. Note which drains are affected, whether it is worse in rain, and where the manholes are.
- Inspection. The plumber opens chambers to find where flow stops.
- Clear the blockage using rods or a drain machine, and remove solids.
- Find the cause. Check slope, broken pipes, root entry, poor joints or grease build-up.
- Quote the permanent fix. This might be replacing a pipe section, adding a chamber or correcting slope.
- Carry out the work and rebuild floors or paving.
- Water-test by running water through every drain and watching each chamber.
Approvals and connections in Lahore
Work inside your boundary is usually your responsibility. The connection to the public sewer is controlled by WASA in city areas or by your society's maintenance office in private schemes. WASA Lahore's information desk lists new connections and complaints among its services (WASA Lahore), and new water connections are offered at Lahore e-Khidmat Markaz centres (PITB). Ask WASA or your society for the current procedure before connecting or altering the line outside your boundary.
What affects the cost
- Whether it is a clear-out or a replacement job
- Length and depth of the line, and how many chambers are involved
- Floors, tiles or paving to break and restore
- Machine work versus manual rodding
- Distance and depth to the street sewer
- Work outside the boundary that needs permission
Questions to ask the plumber
- What caused the blockage, and will it come back?
- Will you add an inspection chamber so future blockages are easier to clear?
- What slope will the new line have?
- Will you separate rainwater from sewage where possible?
- Who restores the floor or paving?
Red flags
- Clearing the same blockage repeatedly without explaining the cause
- Connecting roof rainwater into a small sewer line
- Long drain runs with no inspection chamber
- Leaving manholes uncovered or with loose covers
- Altering street sewer connections without WASA or society permission
FAQs
Why does my drain back up only during rain? Street sewers fill during heavy rain and water can push back into lower house drains. Raising drain outlets, adding backflow measures and keeping rainwater separate can help; ask the plumber to check levels.
Who fixes a blocked sewer outside my house? In WASA areas, report it to WASA; in private societies, to the society office. Your plumber handles lines inside your property.
How do I prevent kitchen drain blockages? Avoid pouring grease and food waste down the sink, use strainers, and have a grease trap or chamber cleaned periodically.
Do I need permission for a new sewer connection? Yes, connections to public or society sewers go through WASA or the society. Ask them for the current documents and process.