Słownik
- Wall-hung toilet — Toilet pan fixed to the wall with a concealed cistern and no contact with the floor.
- Warehouse — Storage and distribution building with limited foul drainage but extensive surface water.
- Wash basin — Sanitary fitting for washing hands and face with tap and waste connections.
- Waste pipe — Smaller diameter pipe carrying water from sinks, baths and basins to the drainage system.
- Water backup (overflow from fixture) — Wastewater backing up out of a sink, bath or toilet due to drain blockage.
- Water Industry Act 1991 — Primary UK legislation governing the duties and powers of water and sewerage undertakers.
- Water pooling on lawn — Standing surface water on a lawn after rain, often linked to blocked or undersized drainage.
- Water Resources Act 1991 — Primary UK legislation governing water abstraction, pollution prevention and watercourses.
- Water seal — Layer of water retained in a trap that prevents drain odours entering a building.
- Water Supply (Water Fittings) Regs 1999 — UK regulations setting out requirements for water fittings to prevent waste and contamination.
- Water test (drain) — Pressure test using a controlled head of water to check drain watertightness.
- Watersafe registration — UK accreditation scheme for plumbers and businesses competent to work on water supply systems.
- Weekend drainage service — Drainage emergency response on Saturdays and Sundays at premium callout rates.
- Wet patch on ceiling — Damp staining on a ceiling caused by water leaking from drainage or supply pipework above.
- Wet room — Fully waterproofed bathroom with an open shower area and a floor drain.
- Wet wipe blockage — Drain blockage caused by flushed wet wipes that do not break down in water.
- WIAPS (Water Industry Approved Plumbers Scheme) — Historic UK plumbing accreditation scheme, now consolidated within Watersafe.
- Working at Height Regulations 2005 — UK regulations setting out duties to prevent falls from height, including roof drainage works.
- WRc condition grading — Industry standard scheme that grades drain defects from 1 (minor) to 5 (severe).
- WRc Sewer Cleaning Manual — UK industry reference giving guidance on sewer cleaning techniques and equipment.
- WRc Sewerage Manual — UK industry reference manual covering sewerage design and asset management practice.
