How many porta potties does my crew need?

OSHA requires 1 toilet for 20 or fewer workers, and 1 seat plus 1 urinal per 40 workers above 20. We recommend 1 standard unit per 10 workers on a 40-hour week with weekly service.

How often will it be cleaned?

Long-term rentals get one service visit per week. The crew pumps the tank, adds fresh blue deodorizer, cleans and sanitizes surfaces, and restocks toilet paper and sanitizer. Busy sites can add more visits.

Can I lock the porta potty?

Every unit has an inside latch with an occupied sign. For job sites we can add a hasp so you can padlock it after hours. Leave it unlocked or give us a key or code before each service day.

Can I get it cleaned more than once a week?

Extra service visits can be added on any day we run your area. Big crews and long events often book two or three visits a week. Each extra visit is priced on your quote.

OSHA Porta Potty Requirements for Virginia Job Sites

Written by Roy, owner of Most Portable Toilets
Roy schedules deliveries, quotes jobs and works routes across Winchester and the northern Shenandoah Valley. Reviewed October 23, 2026.

How many toilets does OSHA require on a construction site?

OSHA 29 CFR 1926.51(c), Table D-1, requires 1 toilet for 20 or fewer employees, 1 toilet seat and 1 urinal per 40 workers for 20 or more, and 1 seat and 1 urinal per 50 workers for 200 or more. Virginia follows these federal construction numbers.

OSHA Table D-1
Employees	Minimum facilities
20 or fewer	1
20 or more	1 toilet seat and 1 urinal per 40 workers
200 or more	1 toilet seat and 1 urinal per 50 workers

Source: OSHA 29 CFR 1926.51. Virginia runs its own OSHA-approved plan (VOSH) that adopts these federal construction sanitation rules.

Does OSHA require hand-washing stations on job sites?

OSHA 1926.51(f) requires employers to provide washing facilities where workers handle paints, coatings, herbicides, insecticides or other harmful substances. Those facilities need water, soap and towels. Most general contractors put a hand-wash station beside the toilets on every site, which covers this rule.

See our hand-wash station rental page for specs and counts.

Do men and women need separate porta potties?

Under Table D-1, toilets must be provided separately for each sex unless the toilet rooms can be locked from inside and are used by one person at a time. Standard porta potties lock from inside, so a single-occupancy unit meets this rule for a mixed crew.

What does OSHA require on farms?

Farms with 11 or more hand laborers doing field work need 1 toilet and 1 hand-washing facility per 20 workers, within a quarter-mile walk, under OSHA 29 CFR 1928.110. Drinking water is also required. Orchards in Frederick County often move units block to block during harvest.

Source: OSHA 29 CFR 1928.110.

Is the OSHA minimum enough for my crew?

The OSHA minimum is a legal floor, not a comfort target. One toilet can legally serve up to 20 workers, but that toilet fills fast on a 50-hour week. We recommend 1 standard unit per 10 workers with weekly service, and extra service for long weeks or summer heat.

Use the crew calculator to check your count. This article is general information, not legal advice; confirm with your safety officer.

Keep reading: construction site units · sizing calculator · industrial restrooms.

Get an itemized quote

Fastest answer: call. Prefer text? Send this form with your ZIP, dates and headcount, and we reply by phone or text within business hours, usually inside an hour. Your quote lists the unit, delivery, pickup, the cleaning schedule and tax on separate lines, so the price you approve is the price you pay.

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