OSHA Requirements for Virginia Job Sites
OSHA requires 1 toilet for 20 or fewer workers, 2 for 21–40, 3 for 41–80, 4 for 81–110, and 1 additional per 40 workers over 110. A practical guideline is 1 unit per 10–20 workers.

Whether you're building a custom home, managing a commercial development, or overseeing a road project, providing enough portable toilets is more than a convenience—it's essential for worker productivity, sanitation, and jobsite compliance.
So, how many portable toilets does your Virginia construction site need? The answer depends on your crew size, work schedule, and how often the units are serviced.
OSHA Requirements for Construction Site Toilets
The Occupational Safety and Health Administration (OSHA) requires employers to provide readily accessible toilet facilities for employees. The minimum requirements are:
- 1 toilet for 20 or fewer workers
- 2 toilets for 21–40 workers
- 3 toilets for 41–80 workers
- 4 toilets for 81–110 workers
- Add 1 additional toilet for every 40 workers over 110
These are minimum standards. Many contractors choose to provide additional units to reduce wait times and improve jobsite cleanliness.
General Rule of Thumb
For most construction sites in Central Virginia:
- 1 portable toilet for every 10–20 workers is a practical guideline.
- Weekly servicing is typically sufficient for standard construction crews.
- Sites with longer workdays, multiple shifts, or high visitor traffic may require more frequent service or additional units.
Providing enough restrooms helps prevent long lines, keeps facilities cleaner, and reduces downtime.