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Partially demolished concrete structure at an active work site
Guide · Updated 2026-08-21

OSHA portable toilet requirements for Nevada construction sites

The short answer

OSHA 29 CFR 1926.51 requires adequate and readily accessible toilet facilities at all construction work locations: one facility for up to 20 workers, one toilet seat and one urinal per 40 workers at 20 or more employees, and one per 50 at 200 or more. Facilities must be kept in a sanitary condition, so an unserviced unit does not count toward the minimum. Nevada enforces through its own State Plan rather than through federal OSHA directly.

Worth knowing

Of 11 other Nevada portable toilet listings we compared, 4 mention OSHA and none mention permitting.

What does the standard actually require?

The governing rule is 29 CFR 1926.51, "Sanitation", which sits in the construction standards rather than the general industry ones. It requires employers to provide toilet facilities that are both adequate in number and readily accessible. Accessibility is the half most often overlooked on spread-out sites.

Toilet facility minimums under 29 CFR 1926.51
Crew sizeMinimum required
20 or fewer1 toilet facility
20 or more employees1 toilet seat and 1 urinal per 40 workers
200 or more employees1 toilet seat and 1 urinal per 50 workers

OSHA has issued interpretation letters clarifying that toilets on a construction jobsite must be maintained in a sanitary condition to meet the requirement, and that whether an employer complies depends on providing prompt access, meaning facilities close enough that workers can use them when they need to.

How does Nevada enforce it?

Nevada is a State Plan state. Enforcement runs through Nevada OSHA inside the Division of Industrial Relations rather than through federal OSHA. Initial approval of the Nevada State Plan was published in January 1974 and final approval in April 2000, and the plan covers public and private sector employers in the state with limited exceptions.

State plans must be at least as effective as the federal standard and are permitted to be stricter. The practical consequence is that the ratios above are the floor. Before relying on the federal minimum for a compliance decision on a Nevada site, confirm the current position with Nevada OSHA rather than assuming parity.

Where do sites actually fail?

  • Service lapses. A unit that has not been pumped is not a compliant facility, whatever the delivery ticket says.
  • Accessibility. Readily accessible means workers can reach it without an unreasonable walk. A single unit at the gate of a large site can fail this even when the arithmetic passes.
  • Crew growth. A site sized at 18 workers that grows to 24 crosses a bracket, and nobody re-runs the number.
  • Shift pattern. Continuous rotation loads units far harder than a single day shift of the same headcount.
  • Winter. Frozen units are out of service, and in northern Nevada that is a live risk from roughly November through March.

Most of these failures are scheduling problems rather than equipment problems. Getting the service interval right for your shift pattern is a two-minute conversation that prevents all five.

What applies in each city we serve?

  • Sparks, Washoe County: City of Sparks Parks & Recreation (special event permit). Winter factor: hard winter freezes requiring cold-weather servicing
  • Dayton, Lyon County: Lyon County Building Department (Yerington). Winter factor: hard freeze-thaw cycling from November through March
  • Incline Village, Washoe County: Washoe County Building & Safety plus Tahoe Regional Planning Agency (TRPA) review. Winter factor: heavy Sierra snow load
  • Fallon, Churchill County: City of Fallon Building Department (in city). Winter factor: hard winter freezes below 20 degrees F
  • Winnemucca, Humboldt County: City of Winnemucca / Humboldt County Building. Winter factor: winter lows near 10 degrees F
  • Lovelock, Pershing County: Pershing County Building Department. Winter factor: hard winter freezes
Frequently asked

Questionson this topic

Still unclear on something? The phone is faster than a form, and we would rather answer it than have you guess.

How many porta potties does OSHA require per worker?

One toilet facility for up to 20 workers. At 20 or more employees, one toilet seat and one urinal per 40 workers. At 200 or more employees, one toilet seat and one urinal per 50 workers. These come from 29 CFR 1926.51.

Does Nevada have its own OSHA portable toilet rules?

Nevada runs an OSHA State Plan through the Division of Industrial Relations, which must be at least as effective as the federal standard and may be stricter. Treat 29 CFR 1926.51 as the floor and confirm any Nevada-specific requirement with Nevada OSHA directly.

Can a dirty porta potty count toward the OSHA minimum?

No. OSHA requires facilities to be maintained in a sanitary condition, so an unserviced unit does not count toward your required minimum even though it is on site.

Do I need a permit for portable toilets on a private construction site in Nevada?

Generally no. Portable toilets on a private job site are typically not separately permitted. Public events are the exception, and are permitted by either a county health authority or the State of Nevada DPBH Environmental Health Section depending on the county.

How far from workers do the units have to be?

OSHA does not set a distance in feet. The test is prompt access, meaning facilities close enough that workers can use them when they need to. On a large or linear site that usually means more than one location rather than more units in one place.

Partially demolished concrete structure at an active work site

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