How many toilets does a job site need in Alberta?
Alberta's Occupational Health and Safety Code (Schedule 7) requires at least 1 toilet for up to 10 workers of each sex, 2 for 11 to 25, 3 for 26 to 50, 4 for 51 to 75, 5 for 76 to 100, and 6 plus 1 more for every additional 30 workers over 100.
The Schedule 7 table
The count is per sex. Work out the toilets for men and for women separately, then add them.
| Workers of that sex | Minimum toilets for that sex |
|---|---|
| 1 to 10 | 1 |
| 11 to 25 | 2 |
| 26 to 50 | 3 |
| 51 to 75 | 4 |
| 76 to 100 | 5 |
| Over 100 | 6, plus 1 for every additional 30 workers over 100 |
Worked examples
| Crew | Minimum toilets |
|---|---|
| 8 workers, men and women | At least 1 toilet. With 10 or fewer workers on site, one lockable toilet may serve both. |
| 20 men and 4 women | At least 2 toilets for the men and 1 for the women: 3 in all. |
| 40 men and 8 women | At least 3 toilets for the men and 1 for the women: 4 in all. |
Other rules in Part 24 worth knowing
- One toilet for everyone. A single toilet can serve both men and women only when the site never has more than 10 workers and the door locks from the inside (section 357).
- Hand washing. Every toilet facility needs a wash basin or hand-cleaning station, with cleaning agent and single-use towels or an air dryer (sections 359 and 360).
- Sites without water or sewer. Self-contained units are allowed where there is no municipal water or sewer, and they must be serviced regularly (section 358).
- Short jobs. A mobile or temporary site worked for 5 working days or less can rely on nearby toilet facilities the workers can get to (section 356).
- Upkeep. Toilets and washing facilities must be kept clean, sanitary and working (section 361).
Where our trailer fits
Our heated trailer has two toilets in two separate, lockable rooms, and each room has its own sink, soap and paper towel. Set up as one men's and one women's room, it covers up to 10 men and 10 women under Schedule 7. Used by one group, its two toilets cover 11 to 25 workers. It is heated and has water on board, so it works on remote leases and in winter.
Sources
- Alberta OHS Code, Schedule 7: Toilets at a Work Site
- Alberta OHS Code, Part 24: Toilets and Washing Facilities
The Government of Alberta's online Code was marked current to March 2023 when we checked it on November 10, 2026. Rules change, so check the current Code and talk to your safety lead for your site. This guide is a plain-language summary, not legal advice.