Restroom Calculator

Need an estimate for how many porta potties your event needs? Use this handy calculator! For a more specific quote tailored to your needs, call us today at 800-210-8407!

special events calculator

Portable Heat Calculator

Need an estimate for how many BTU's you'll need to heat up your space? Use this handy calculator! For a more specific quote tailored to your needs, call us today at 800-210-8407!

Heating Calculator
*Please press the "tab" key on your keyboard or click out of the field after entering all fields to ensure the calculation is correct.



General Questions

Standard office hours: Monday through Friday, 7:00 a.m. – 5:00 p.m. Summer weekend office hours (June 1st – October 1st): Saturdays 8:00 a.m. – 12:00 p.m. In case of an emergency an on-call team member can be reached after hours by calling 1-800-210-8407.

On Site Companies serves Minneapolis, St. Paul, Rochester, Mankato, St. Cloud MN and surrounding metropolitan areas as well as St. Louis, MO. Luxury portable bathroom trailers and shower trailers are available for nationwide delivery.

Monthly construction site rentals: Each weekly serviced portable toilet can accommodate up to 10 workers (working a single 40-hour shift) ANSI Z4.3-2005. Special event rentals: Each unit can accommodate approximately 200 uses with 4 hours between uses before service is required. The Americans with Disability Act requires that 5% of all porta-potty rentals ordered be enhanced access, or a minimum of one per order. We offer Enhanced Access Toilets. Please refer to our Special Event Usage Guide to help plan your event. Special Event Usage Guide (PDF) Please contact our sales team for rental prices and to help you determine the best sanitation solutions for your needs.

We accept all major credit cards (Visa/MasterCard/Discover/AmEx), electronic wire transfers, and checks (note: all special event check payments must be submitted two weeks prior to the rental date).

All units should be placed on a level surface, no further than 20′ from a hard surface (so that our service trucks can access the portable restroom).

On Site Companies offers service from the following locations: Twin Cities, MN: 95 Woodlynn Ave., St. Paul, MN 55117 Rochester, MN: 2300 32nd Avenue NW, Rochester, MN 55901 St. Louis, MO: 18285 Edison Ave, Chesterfield, MO 63005

Portable restroom service schedules will be altered in observation of the following holidays: Memorial Day Independence Day Labor Day Thanksgiving Christmas New Years Day Services normally scheduled on these dates will be performed prior to or the day after the holiday. OnSite specializes in portable toilet event service – let us help you prepare for your holiday celebrations with a full line of portable sanitation solutions.

All rentals will be delivered the day you need it. Emergency same-day service can be arranged; please note additional delivery fees will apply.

All rentals will be picked up within two business days after your event, unless otherwise specified.

Absolutely. Please consult your sales representative for additional fees and scheduling.

We have the capabilities of servicing most RV’s, boats and trailers. Please contact us to schedule a time to bring your boat or RV by our location, or we can schedule during the week with one of our service routes.

Yes. We take great pride in knowing that we are a leader in eco-friendly initiatives in our industry. Please visit our Green Initiatives page for more information.

Luxury Restroom Trailers

Call one of our Event Specialists and they will be happy to help you determine which Luxury Portable bathrooms will be the best fit for your event and then provide you with a quote. Upon receipt of a signed contract and deposit, we will reserve your trailer.

To determine the appropriate size trailer various factors must be taken into consideration: number of guests, the ratio of men to women, duration of the event, and the amount of food and beverages being served. Please contact our Event Specialists who will help you determine the best solution for your special occasion.

The restroom trailers must be installed on level ground within 100 feet of electricity (110V) to run the lighting, heat, air conditioning, stereo and the pressure pumps for water. Larger units require two or three separate 110 volt outlets while smaller units require one or two. Additionally, a standard water hose outlet is needed.

For remote locations, a generator can be rented from OnSite to power the restroom trailer and a water tank can be provided for the necessary water requirements.

Our restroom and shower trailers are in high demand for the summer months of May – October. To ensure service for your event, it is recommended you reserve your OnSite sanitation rentals as soon as you know the dates of your event.

We are committed to providing you the highest level of service so that your restroom needs are not a concern during your event. We will work with you at the time of scheduling to determine the best maintenance schedule so as to not interrupt your festivities but still provide clean, working facilities.

No. It is OnSite’s policy that we use only our own trucks and employees to deliver and place our restroom trailers due to insurance requirements and liability.

Yes. All trailers have either air conditioners and/or HVAC system.