OSHA 1926.51(c) sets the baseline: 1 toilet for 20 or fewer workers on a construction site, scaling to 1 toilet seat and 1 urinal per 40 workers once you pass 20, then 1 per 50 at 200 or more. Hammond contractors use this ratio to plan every job site rental.
OSHA portable toilet requirements construction crews follow start with 1926.51(c), which sets worker-to-toilet ratios by headcount. A 15-person framing crew needs one unit. A 45-person crew needs two toilet seats and two urinals, since that count sits between 20 and 200. OSHA 1926.51(a)(1) also requires an adequate supply of potable water at every place of employment, which is why crews pair portable toilet rental with a water source on site. None of this addresses handwashing on its own; 29 CFR 1910.141(d)(2) covers general industry sites and requires soap plus towels or a hand dryer, not sanitizer alone. If your crew is spraying coatings, herbicides or insecticides, OSHA 1926.51(f)(1) kicks in separately and requires washing facilities for that contaminant exposure. Hammond general contractors managing a mixed crew of framers, painters and electricians often need both a standard porta potty rental count under 1926.51(c) and a washing station under 1926.51(f)(1) if paint crews are on site. Figuring the right count for your crew size is covered in our guide on how many porta potties do I need, and a fuller breakdown of the ratio table lives on our OSHA portable toilet requirements pillar page.
Cal OSHA portable toilet requirements construction employers in California follow are a separate state-plan standard, not the federal 1926.51(c) table used in Indiana. Hammond sits under federal OSHA jurisdiction, so contractors here follow the ratios above, not California's version. If your company operates crews in both states, do not assume the numbers match; check each state's own standard before you plan unit counts for a multi-state job. For Hammond and the rest of Lake County, 1926.51(c) is the number that matters, and it is the one our portable restroom rental team plans against for every quote.
OSHA does not publish a specific foot-distance rule for portable toilet placement inside 1926.51. What the standard does address is accessibility and adequacy, and separately, ADA Standards 213.2 requires that at least 5 percent of clustered single-user units be accessible, never fewer than one. Placement should also account for ADA Standards 403.5.1, which sets a 36 inch minimum clear width on the accessible route to the unit, and 405.2, which caps ramp slope at 1:12 if the ground is not level. Practical placement, meaning firm ground per ADA 302.1 and enough turning space per ADA 304.3.1's 60 inch diameter, matters more on most Hammond sites than any specific distance figure. Our porta potty placement guide walks through firm-ground and clearance decisions in more depth, and our ADA accessible porta potty page covers the accessible unit itself. For sites near excavation or heavy equipment, also check OSHA 1926.202 on barricade standards and 1926.56(a) on minimum lighting, both of which affect where a unit can safely sit after dark.
Counting workers against the 1926.51(c) table is the starting point, but real Hammond sites also factor in shift length, distance to the nearest unit, and whether trade crews overlap. A standard unit rents for a table's worth of options depending on how long you need it:
| duration | low | typical | high |
|---|---|---|---|
| day | 100 | 150 | 350 |
| week | 130 | 200 | 500 |
| month | 125 | 200 | 325 |
Delivery adds a separate fee, and weekly delivery runs cheaper per visit than a single-day delivery charge. A crew working a home remodel near East Chicago, 4.5 miles northeast of Hammond, often rents by the week; a longer commercial build near Munster, 6.3 miles south, usually goes monthly. Our porta potty rental cost page breaks down what drives price beyond the base rental, and monthly porta potty rental covers long-haul jobs specifically. If your labor crew works outdoors doing hand labor in agriculture, note that OSHA 1928.110 sets its own field sanitation rule: one facility per 20 employees, reachable within a quarter mile walk, which is stricter on distance than the general construction standard. Farms near Hammond can find more on that under farm and agricultural restrooms. Jobs also needing a dumpster on site should see construction dumpster rental or check dumpster permit requirements before delivery, and any site short on secure storage can look at storage container rental; searches for storage container rental Oshawa sometimes reach this page too, but our service area is Hammond, Indiana, not Ontario, so confirm you're looking at the right region before requesting a quote.
Once your crew passes 20 workers, OSHA 1926.51(c) requires a second toilet seat and urinal, scaling to one per 40 workers up to 200. A 25-person crew needs two units, not one. Confirm your daily headcount before ordering, since undercounting is a common compliance gap on Hammond sites.
Not automatically. General handwashing under 29 CFR 1910.141(d)(2) applies to general industry sites and requires soap and towels or a dryer. OSHA 1926.51(f)(1) applies only when workers handle paints, coatings, herbicides or insecticides. Check our handwashing station rental page for setups that satisfy either case.
The federal standard doesn't change by city, but local placement rules can. Confirm right-of-way placement with the City before delivery, since municipal permission for curb or street placement is a separate question from OSHA compliance. Our porta potty permit requirements page covers what to ask.
No. 1926.51(c) is written for construction crews, not public events. Events use headcount-based planning instead; see event restroom rental or festival restroom rental for guidance suited to guests rather than laborers.
An OSHA inspector can cite a site for insufficient facilities under 1926.51(c), which can mean fines and delayed work. Order ahead of your peak headcount, not your average one. Hammond Porta Pros can help size a plan against the table before your permit even clears.
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