Construction sites are typically required to provide restroom facilities for workers, and portable restroom rental covers delivery, placement, and regular servicing for the length of a project. Providers can typically supply both standard units and ADA-accessible units where required.

  • Standard and ADA-accessible unit options
  • Delivery and placement coordinated with site logistics
  • Regular servicing scheduled for project duration

Current Construction Site Sanitation Trends

  • OSHA's toilet-to-worker ratios are strictly tied to peak shift size

    For sites with 20 or fewer employees, at least one portable toilet is required; above that, the ratio becomes one toilet and one urinal per 40 workers — calculated from peak shift numbers, not average workforce size, which is a common compliance miscalculation. (OSHA 29 CFR 1926.51, cited in 2026 industry coverage)

  • Verifiable hygienic quality, not just availability, is the growing compliance focus

    The 2026 regulatory framework shifts emphasis from simply having facilities present to proving they're actually clean and functional — a real change in what "compliant" means for site sanitation providers and general contractors alike. (Industry construction sanitation compliance coverage, 2026)

Portable Restroom Rental FAQs

How many portable toilets does OSHA require on a construction site?

OSHA's construction sanitation rule sets minimums by crew size: one toilet for 20 or fewer workers; for 20 or more, one toilet seat and one urinal per 40 workers; and for 200 or more, one seat and one urinal per 50 workers. Those are minimums — sites with long shifts, hot weather or infrequent servicing usually need more, and service frequency matters as much as the unit count. On multi-employer sites, the general contractor typically plans for everyone on site, so count subcontractor crews too.

This content is reviewed by the Des Moines Construction Site Sanitation editorial team and informed by licensed-contractor sourcing, manufacturer documentation, and established industry standards for Construction Site Sanitation. Read our editorial standards.