Uniformat D2010
Water closet
Also called toilet, WC
This is version 0.3.0. The latest is 0.4.0.
Service life
Years in service. The band runs from the shortest to the longest life the sources state, so it shows how much they disagree, not how long 80% of units last. The line is the median of the stated lives.
Basis
- 40 years · CNA e-Tool Estimated Useful Life Table, p11 · HUD CNA 3.4.1.3.5 “Toilets/bidets/urinals” — U.S. Department of Housing and Urban Development (planning life)Same life for family and elderly properties. US multifamily housing.
- 25 years · General depreciation rates (IR265), July 2021, p44 · BDFO “Plumbing fixtures” — Inland Revenue (Te Tari Taake), New Zealand (accounting life)Printed page 44. Plumbing fixtures: toilets, urinals, basins, drinking fountains. Note the separate row 'Sanitary appliances' (8 years), which under NZ Building Code usage means appliances such as dish and clothes washers, not fixtures; it is not mapped. BDFO Building fit-out (when in books separately from building cost). Printed DV 8%, SL 6%. Tax depreciation lives set by the Commissioner of Inland Revenue for New Zealand income tax, not engineering or asset-management lives; they are banded and often short (e.g. reticulation piping 25 years). The July 2021 edition was the newest PDF reachable; the online Depreciation Rate Finder may hold later determinations.
How sources are chosen and recorded: sourcing policy.
Municipal lives for plumbing (D20)
26 municipalities in Ontario and British Columbia state a life for plumbing as a whole, in 18 distinct tables: 15–50 years, median 25. 34 rows come from capital asset policies (accounting lives, used for amortization) and 1 from asset management plans (planning lives, used to forecast replacement). They describe the system rather than this component, and none is a measured life.
Years. Each dot is one stated life and each bar a stated range; equal values stack. Hollow marks are planning lives from asset management plans; filled marks are accounting lives from policies. The dashed line is the median. Policies that copy the same table count once.
All 27 stated lives
| Municipality | As written | Years | Kind | Source |
|---|---|---|---|---|
| Kingston | Building Fixtures | 15 | accounting | p15 · 2016 |
| Meaford | Plumbing - Water Treatment System | 15 | accounting | p17 · 2020 |
| Trent Lakes | Mechanical Systems - Fixtures | 15 | accounting | p10 · 2009 |
| Fort St. James, Revelstoke, Rossland, Sicamous, Tumbler Ridge · same table | Electrical/Plumbing/Fire | 15–20 | accounting | p5, p9, p7, p9, p5 · 2010 |
| Okanagan-Similkameen | Electrical/Plumbing/Fire | 15–20 | accounting | p11 · 2023 |
| Salmo | Electrical/Plumbing/Fire | 15–20 | accounting | p6 · 2016 |
| Comox Valley | HVAC systems, mechanical, plumbing, wiring, etc. | 20 | accounting | p6 · 2010 |
| Cranbrook | HVAC, plumbing, lighting, etc | 20 | accounting | p9 · 2010 |
| Telkwa | Electrical/Plumbing/Fire | 20 | accounting | p8 |
| London | Building Components - Services (HVAC, lighting, communication, plumbing etc.) | 20 | accounting | p2 · 2023 |
| Meaford | Plumbing - Fixtures | 20 | accounting | p16 · 2020 |
| Meaford | Plumbing - Boiler | 20 | accounting | p17 · 2020 |
| Lantzville | Electrical, Mechanical, Plumbing | 25 | accounting | p11 · 2019 |
| Meaford | Plumbing - Septic System | 25 | accounting | p17 · 2020 |
| Rainy River | Building Improvements - Electrical/Plumbing | 25 | accounting | p11 · 2010 |
| Rainy River | Building Improvements - Electrical/Plumbing | 25 | planning | p17 · 2026 |
| The Blue Mountains | Septic System | 25 | accounting | p11 · 2019 |
| Bancroft, Centre Hastings, Hastings Highlands, Wollaston · same table | Electrical/Plumbing | 25–30 | accounting | p5, p4, p6, p5 |
| Greater Napanee | E30 Chillers, Rink Piping, Fuel Storage Tanks | 30 | accounting | p16 · 2012 |
| Grey Highlands | Septic System | 30 | accounting | p11 · 2026 |
| The Blue Mountains | Plumbing System | 30 | accounting | p11 · 2019 |
| Trent Lakes | Mechanical Systems - Piping | 30 | accounting | p10 · 2009 |
| Parksville | Plumbing Infrastructure | 50 | accounting | p9 · 2023 |
| Greater Madawaska, Quinte West · same table | Piping | 50 | accounting | p17, p38 · 2025 |
| Meaford | Plumbing - System | 50 | accounting | p16 · 2020 |
| Meaford | Plumbing - Cistern | 50 | accounting | p16 · 2020 |
| The Blue Mountains | Cistern | 50 | accounting | p11 · 2019 |
Of 35 rows, 2 were compared with an image of their page; 33 were matched to their page automatically (the label and number appear in the page text). Follow the page link before relying on an automatically matched row. About the policies · All approved rows as JSON
Preventive maintenance
4 tasks in 1 work order.
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12Annual
Months from the schedule start. Download the tasks as CSV for a CMMS, or ask the MCP tool get_pm_schedule for dated visits.
Annual · 4 tasks
Source: Technical Operations and Maintenance Guidelines on Common Water Equipment, Toilets and Urinals table
| Task | Page |
|---|---|
| Check flushometer flush valves: flush time, diaphragm gasket condition and rating | pundefined |
| Check tank water level and that the fill valve shuts off | pundefined |
| Dye-test the flapper valve for leaks | pundefined |
| Check automatic flush sensors; calibrate if double flushing | pundefined |
Frequencies are ISO 8601 durations in the data (P3M = every 3 months).
Open questions
- Every source here is a published planning, design or accounting life. None is observed replacement data.
- Aimed at water efficiency in federal facilities, not full fixture maintenance.
Know the answer? Send it with a source to [email protected].
Cite this
Citation
unfinished.one (2026). Water closet, v0.3.0. https://unfinished.one/c/water-closet/v/0.3.0BibTeX
@misc{unfinished_water_closet_0_3_0,
title = {Water closet},
author = {{unfinished.one}},
year = {2026},
version = {0.3.0},
url = {https://unfinished.one/c/water-closet/v/0.3.0},
note = {CC BY 4.0}
}Licence CC BY 4.0 · How to cite · JSON · Versions: 0.4.0, 0.3.0, 0.2.0, 0.1.0