Guide · Odessa, TX
OSHA Porta Potty Requirements for Construction and Farm Work
This guide explains the OSHA rules that decide how many toilets and hand-wash stations a jobsite or farm crew needs, with the official text linked and worked examples for Odessa crews.
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- Delivery areaOdessa, West Odessa, Gardendale, Goldsmith and Midland daily. All areas.
- ArrivalSame day when you call by noon, Mon–Sat; events the day before.
- UnitStandard units with a seat and urinal count toward both OSHA numbers.
- CleaningWeekly service included on jobsite rentals; event units arrive stocked.
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- OSHA 29 CFR 1926.51(c) Table D-1 requires 1 toilet for 20 or fewer workers.
- Yes.
- OSHA 29 CFR 1928.110 requires 1 toilet and 1 hand-washing facility per 20 field workers, located within a quarter-mile walk.
- Permanent workplaces fall under OSHA 29 CFR 1910.141 Table J-1: 1 toilet for 1 to 15 workers, 2 for 16 to 35, 3 for 36 to 55, 4 for 56 to 80, 5 for 81 to 110, and 6 for 111 to 150, then 1 more per 40 workers.
- The legal minimum is the fewest toilets OSHA allows; our recommendation is the number that lasts until the weekly service visit.
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 workers. For 20 or more workers, it requires 1 toilet seat and 1 urinal per 40 workers. For 200 or more workers, it requires 1 toilet seat and 1 urinal per 50 workers. Each standard unit has a seat and a urinal.
| Number of workers | Minimum facilities (Table D-1) |
|---|---|
| 20 or fewer | 1 toilet |
| 20 or more | 1 toilet seat and 1 urinal per 40 workers |
| 200 or more | 1 toilet seat and 1 urinal per 50 workers |
Official text: OSHA 29 CFR 1926.51. Mobile crews with transportation readily available to nearby toilets are exempt under (c)(4).
Does OSHA require hand washing on jobsites?
Yes. OSHA 29 CFR 1926.51(f) requires adequate washing facilities for employees on construction sites, and extra care where workers handle paints, coatings, herbicides or other harmful materials. A hand-wash station with soap, water and towels is the usual way to meet it.
What does OSHA require for farm field crews?
OSHA 29 CFR 1928.110 requires 1 toilet and 1 hand-washing facility per 20 field workers, located within a quarter-mile walk. It applies when 11 or more employees do hand labor in the field. It does not apply when the work, including travel, lasts 3 hours or less.
Official text: OSHA 29 CFR 1928.110.
What about permanent workplaces such as yards and plants?
Permanent workplaces fall under OSHA 29 CFR 1910.141 Table J-1: 1 toilet for 1 to 15 workers, 2 for 16 to 35, 3 for 36 to 55, 4 for 56 to 80, 5 for 81 to 110, and 6 for 111 to 150, then 1 more per 40 workers. Portable units cover outages, remodels and turnarounds.
Official text: OSHA 29 CFR 1910.141.
What is the difference between the legal minimum and our recommendation?
The legal minimum is the fewest toilets OSHA allows; our recommendation is the number that lasts until the weekly service visit. A 30-person crew legally needs 1 seat and 1 urinal. We recommend 3 standard units, because one unit for 30 people fills its 60-gallon tank before a week is up.
This guide is general information, not legal advice. Confirm with your safety officer or general contractor.
Questions renters ask before they book
Our dispatchers hear these 4 questions often, including “How many porta potties does my crew need?” and “Would we need it cleaned more than once a week?” The answers are written the way we explain them on calls. Starting prices appear only here, and your itemized quote confirms the exact total.
How many porta potties does my crew need?
OSHA requires at least 1 toilet for 20 or fewer workers. Over 20 workers, the rule is 1 toilet seat and 1 urinal per 40 workers. We recommend 1 unit per 10 workers with weekly service, so tanks and paper last the full week.
Would we need it cleaned more than once a week?
Yes, if one unit serves more than 10 workers on a 40-hour week. Add a second weekly visit or a second unit. Odessa summers average 94°F highs in July, and heat speeds up odor, so busy summer sites often add a visit.
How much is a hand-wash station?
A 2-station hand-wash sink starts at $125 for an event and $150 per 28-day cycle on a jobsite. Refilling water, soap and paper towels is part of each service visit.
Can a unit be lifted onto a roof or upper floor?
Yes. We can supply a high-rise unit with a lifting hook for crane picks on commercial projects. Your crane operator does the lift. Book a few days ahead so we can stage the right unit.
Want us to size it for you?
Tell the dispatcher your guest count or crew size. We do the math on the call.
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