How many toilets does OSHA require on a construction site?
Per the OSHA rule as summarized in our sources, a site with 20 or fewer workers needs one toilet. With 20 or more workers, one toilet seat and one urinal are needed per 40 workers, and at 200 or more workers the ratio moves to one per 50. Read the standard for the exact boundary wording.
OSHA also says toilets in an unsanitary condition do not count toward the minimum, and that hand-washing facilities must be near toilets. That second point is the one most often missed. A row of clean units with no sink nearby is a plan with a hole in it.
Our guide to construction site toilet counts in New York walks through the ratios with examples. This page assumes you have counted the crew and want the rental side.
What does New York's Industrial Code add?
New York State Industrial Code Rule 23-1.9, as summarized in our sources, says toilet facilities must be no more than four stories or 60 feet above or below, nor more than 500 feet of travel on the same level, from any worker's location, and in no case more than 1,000 feet. It also calls for separate marked facilities where any female is employed.
OSHA counts toilets by crew size. New York's rule measures distance. Both matter, and meeting one does not meet the other. A site with enough units in a far corner can fail the distance test, and a site with units everywhere but too few for the crew fails the count.
We have not found a sourced NYC Department of Buildings rule on construction toilets. One snippet referred to facilities for construction workers under Section 311.1 of the 2015 International Plumbing Code, but it is thin, so we do not quote it. Ask your contractor's safety officer what the city expects.
Who decides whether a plan complies?
The contractor, its safety officer and the agencies that enforce the rules decide, not a rental provider or this call line. A provider can supply units, hand-wash stations and servicing. It cannot certify that a unit or a layout meets a code, and we do not claim it does.
Treat the rental as one part of a sanitation plan that you own. Count the crew, measure the distances, check the sinks and confirm servicing. Keep notes on what you decided and when, since a changing site will need the plan revisited.
For New Jersey sites, we found no sourced state rule for this page, so check with your safety officer. OSHA's standard is federal and applies there as well.
Where do the units go on a tight New York site?
Units go where a truck can reach them, where workers can reach them within the distance rule and where they will not be in the way of cranes, hoists or deliveries. On a narrow city lot that often means a sidewalk shed edge, a yard corner or a spot negotiated with a neighbor, and the provider will ask about each.
A sidewalk or street placement may need city permission, and a neighbor's lot needs the neighbor's. Settle the location before the units are delivered. A unit that cannot stay where it was dropped helps no one.
Think about servicing as you place them. A provider's truck needs to reach each unit and may need to stop on the street. A unit boxed in by material deliveries is a unit that goes unserviced, which under OSHA's wording means it may not count.