How many porta potties do I actually need?
Start with worker count, not guesswork. OSHA 1926.51(c)(1) sets the ratio for construction sites: 1 toilet for 20 workers or fewer, then 1 toilet seat and 1 urinal per 40 workers once you pass 20, dropping to 1 per 50 once you hit 200 workers or more. Agricultural crews follow a different rule. OSHA 1928.110 calls for 1 facility per 20 hand-labor employees, reachable within a quarter mile walk, which matters for farm operations working the ranchland east toward Harmony Grove, 6.9 miles southeast of San Marcos. Events run on headcount and duration instead of labor law, and our porta potty placement guide breaks that math down further. If you are still unsure, how many porta potties do I need walks through the formula unit by unit. Do not round down. A shortage on-site means a call to us mid-event, and that is a harder fix than ordering one extra unit up front.
What permits does San Marcos require?
Placement in the public right of way needs confirming with the City of San Marcos before delivery, and we are not able to cite a specific ordinance number here, so check with the city directly. Private property jobs are simpler but still worth a call if the unit sits near a sidewalk or drainage easement. Our porta potty permit requirements page covers what to ask the city when you call, and dumpster permit requirements covers the same question for roll-off placement if your project needs both. Do this early. Permit questions surface fastest at the delivery gate, and nobody wants a truck idling on a residential street in San Marcos while paperwork gets sorted.
Where should the unit go on site?
Pick flat, stable ground with a stable, firm, slip resistant surface, the same standard ADA Standards 302.1 sets for accessible routes. Leave a clear path at least 36 inches wide per ADA Standards 403.5.1 if anyone using a wheelchair needs access, and check that any accessible door opening meets the 32 inch minimum under ADA Standards 404.2.3. If you are clustering multiple units, ADA Standards 213.2 requires at least 5 percent to be accessible, never fewer than one. Our ADA accessible porta potty page has the spec sheet if that is part of your order. A standard unit measures about 44 by 48 inches on the ground and stands roughly 92 inches tall, so measure twice before delivery day. Keep it away from soft turf that will rut under a service truck, and remember any roll-off delivery on the same job needs about 60 feet of straight clearance behind the truck, per our roll-off dumpster rental specs. Lock in placement before the truck shows up in San Marcos; moving a full unit later costs everyone time.
When should service and pumping happen?
Weekly is the baseline. ANSI/PSAI Z4.3 sets one service visit per week for up to 10 users across a 40 hour week as the standard interval, which is why most construction jobs and long events schedule accordingly. Ask about frequency before you sign, and see how often are porta potties cleaned for what that visit actually includes. If you are also running a septic system on-site or at a venue, a typical 1,000 gallon residential tank gets pumped every 3 to 5 years depending on size and household load, a fact worth knowing if your rental site has an existing tank feeding a temporary kitchen or trailer hookup. Our septic pumping service and how often to pump a septic tank pages go deeper. Handwashing needs its own line item too: 29 CFR 1910.141(d)(2) requires soap and towels or a drying device, not hand sanitizer alone, so pair any unit order with a handwashing station rental if the job involves food service or painting work covered under OSHA 1926.51(f)(1).
Pricing checklist by rental length
| unit | day | week | month |
|---|---|---|---|
| standard | $100 - $350 | $130 - $500 | $125 - $325 |
| ada | $200 - $400 | $240 - $400 | - |
| deluxe | $85 - $1,200 | $150 - $290 | - |
Weekend rates run separately from the day/week/month scale above; a standard unit over a weekend typically lands between $125 and $400. Check our porta potty rental cost page for the full breakdown, or monthly porta potty rental if your San Marcos job runs long. Delivery fees are billed apart from unit cost, so budget for that separately using porta potty rental per day as your reference point.
Frequently asked questions
What is included in a standard rental?
A 60 to 70 gallon holding tank, weekly servicing under the ANSI/PSAI Z4.3 interval, and delivery within the quoted radius. Deluxe and ADA units add features like flushing or wider turning space; see standard porta potty rental and deluxe flushable porta potty for the comparison.
Do I need an ADA unit for my event?
If you expect any guest using a wheelchair, yes. ADA Standards 304.3.1 requires a 60 inch turning circle inside the unit, and forward reach limits under ADA Standards 308.2.1 cap controls at 48 inches high. Order early since ADA units book out fast; see ADA accessible porta potty.
How far in advance should I book for a wedding or festival?
Book 2 to 4 weeks out for weddings and festivals in San Marcos, longer during peak season. Units near Lake San Marcos, 3.2 miles west, or Elfin Forest, 6.8 miles south, may need extra lead time for delivery routing. See wedding restroom rental and festival restroom rental.
Can I add a handwashing station to my order?
Yes, and it is required under 29 CFR 1910.141(d)(2) if soap and towels are not already available on site. Painting or coating work also triggers OSHA 1926.51(f)(1) washing requirements. Add a handwashing station rental or portable sink rental to any toilet order at booking.
What if I need units on short notice?
Same-day and next-day delivery is often possible depending on inventory. Call San Marcos Porta Pros directly or use emergency porta potty rental for urgent jobs, including disaster response covered under disaster relief sanitation.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.