Most drain emergencies are preventable with a bit of routine attention. This checklist covers what to check, how often, for both households and businesses — print it out or save it somewhere you'll actually look at it.
Household Checklist
Weekly
- Check that sink strainers are in place and clear of debris.
- Wipe down visible drain covers.
Monthly
- Flush kitchen and bathroom drains with hot water.
- Treat kitchen and bathroom drains with a fast-acting drain cleaning powder.
- Check for any slow-draining sinks, showers, or tubs before they fully block.
Every 2–3 Months
- Check outdoor, laundry, or utility drains for lint, dirt, and debris build-up.
- Run water through any rarely-used drains (guest bathroom, spare sink) to keep the P-trap seal intact and prevent odors.
Before the Rainy Season
- Clear gutters and downpipes of leaves and debris.
- Clear outdoor drainage channels of sand, litter, and silt.
- Treat main drain lines to restore full flow capacity ahead of heavy rainfall.
Annually
- Consider a CCTV drain inspection if a property has older plumbing or a history of recurring blockages.
Business / Commercial Checklist
Daily (Food Service)
- Scrape food waste into bins before washing dishes, rather than into the sink.
- Wipe down and clear floor drains in kitchen areas.
Weekly
- Check grease trap fill levels.
- Treat high-traffic drains with a fast-acting powder to manage daily build-up.
Monthly to Quarterly
- Schedule a full grease trap pump-out and cleaning.
- Treat all drain lines on a schedule matched to water usage volume — monthly for high-traffic businesses, quarterly for lighter use.
Annually
- Book a CCTV inspection to catch structural issues before they cause a shutdown-level blockage.
- Review the maintenance schedule against the past year's blockage history and adjust frequency if problems kept recurring.
Frequently Asked Questions
How different is a business's checklist from a household's?
The core actions are similar, but businesses — especially those handling food — need far more frequent attention because of higher water and grease volume.
Do I need to follow this checklist exactly?
Treat it as a baseline. Older plumbing, heavy usage, or a history of recurring blockages all justify more frequent attention than the schedule above.
What's the one item on this list people skip most often?
Pre-rainy season gutter and drain clearing — it's easy to forget until the first heavy rain exposes the problem.
Related reading: How Often Should You Clean Your Drains? A Simple Maintenance Schedule and Professional Drain Cleaning: How Often Do You Really Need It?.