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!

My event is estimated at attendees, for hours.
  • Will there be more women than men?
  • Will there be alcohol served?

Your Estimated Sanitation Services

Based on what you've told us, we've generated this estimate for your needs.

If you have more details or would like expert advice to make sure you get the best sanitation solution, please call us at 800.210.8407.

Estimated Standard Portable Restrooms Needed:0
Estimated Hand Wash Stations Needed:0
Estimated Enhanced Access Restrooms Needed:0

Looking for a custom quote on those items?


Our Values Are What Make Us Valuable

While a lot of companies might do the same thing, they’re not actually all the same. For many, the difference might be in the techniques they employ or the equipment they use. At On Site Companies, we propose that one of the most important differentiators is the values of the company. It is a company’s values that tell you who you’re doing business with, and oftentimes those values will also speak to how well that business gets done.

On Site Companies espouses five values that guide and inform all we do: Employees, Customers, Integrity, Financial Stability, and Dedication. These values reflect who we are, who we want to be, and what we want our company to be.


We are more than just a team; we are a family. We watch out for each other, care for each other, and go above and beyond for each other because we believe in each other, and we trust each other.

On Site began as a family business owned by Dave and Karen Holm thirty years ago. The family aspect of the business was integral to the success of the company. Even now, years later, family is still crucial as the next generation of Holms run On Site. Though the company has grown beyond family members in the literal sense (over 100 employees!), “family” is still how we feel. A source of pride for On Site is that siblings will bring each other into the company when new positions open up. Molly Leonard, daughter of Dave and Karen, who is now Vice President of On Site Companies, once described the On Site employees by saying, “My family now has 400 members. It’s not just the employees, but their families too.”


Customers are the most important stakeholders in our business and the lifeblood to our families and our coworkers’ families. We must exceed their expectations with every encounter. Only by satisfying our customers’ needs first do we have the opportunity to satisfy the needs of our employees. By doing so as a team, we turn customers into advocates for our company that can further enrich our lives.

There is a difference between working for our customers and working with our customers. Working for our customers means we just give them what they ask, not helping them make sure it’s the best thing for their project or event. On Site Companies works with our customers, asking them questions to make sure the sanitation or climate control they are renting is not too little for their needs, but also not too much. Our team members are experts not just in sanitation or climate control, but also in the industries they serve. From large construction or remodeling to weddings or massive public festivals, our team of salespeople, drivers, and technicians understands what each of those projects requires. We want our customers to have good experiences, not just with the services or equipment we provide, but also with their entire project—and we work tirelessly to do all we can to make that happen.


It’s important to always act with integrity in your relationships, to be compassionate, friendly, loyal, and to make sure you do the right thing. The hardest thing to do is build trust, but if trust exists, you can accomplish so much more.

Integrity truly is a key part of all our values. Without integrity, employees wouldn’t be treated well, we wouldn’t take good care of our customers, we certainly wouldn’t have any dedication, and financial stability would be impossible.

Financial Stability

We are all stewards for our fellow coworkers, and we need to take that responsibility very seriously. On Site is committed to creating long-term value. We must earn profits every day through voluntary exchange with our customers. We must all recognize that profits are essential to creating capital for growth, prosperity, opportunity, job satisfaction, and job security.

It’s important for On Site, as a service-based company, to be reliable and trustworthy for our customers. A financially stable company is a company you can trust to the services you need when you need them. If a company doesn’t value financial stability, you may find them cutting corners to balance their budgets or simply not having the equipment and staff to support your needs.


Having dedication brings professionalism, determination, perseverance, and a sense of urgency to every project. Dedication will allow you to believe in what we are doing and where we are going. It tells us that we must face and conquer challenges, never say “no” or “that’ll never work” because if we had, none of us would be here today.

The On Site Value Difference

If you want to do business with a company with real values, call On Site today. It’s not just what we do, but how and why we do it that makes the difference.

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How Many Porta Potties Does My Non-Profit Event Need?

Remembering all the details of planning a non-profit event can get stressful and time-consuming. You don’t want to forget anything, let alone not provide enough amenities for the amount of people who will be attending. The more people that attend, the more amenities you’ll need to keep your event running smoothly. Planning an outdoor event that requires portable toilets, as well as other sanitation options, can be challenging—but it can be done.


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On Site Companies Celebrates Red Nose Day 2016 to Raise Awareness for Children’s Needs Around the Globe


I’m sure you’ve seen the commercials on television or seen the billboards around town for Red Nose Day. The day culminates in a big television event featuring big names in entertainment on Thursday May 26th, 2016. Even though the message is everywhere, you may still have questions about what Red Nose Day exactly is and what they’re exactly raising money for. (more…)

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August 15, 2014 is World Portable Sanitation Day

Here in the United States, it’s easy to forget how important adequate sanitation is to a community. The truth is, according to the World Health Organization, an estimated 2.6 billion people globally lack access to proper sanitation. If you do the math, that is around a third of the world’s population that lacks even basic sanitation services. If those numbers are shocking to you, there are things that you can do to help. (more…)

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Portable Restrooms, Hot Showers and Laundry after a Natural Disaster

A natural disaster can hit anywhere at anytime, and it can ravage any community in a matter of minutes. Once the storm has passes, it is up to community members and outside groups to help clean up the wreckage, and help rebuild the lives of the victims. If housing and public sanitation have been severely damaged, community members may quickly realize how important things like sanitation, running water, and clean living conditions are, and how much they may have taken these things for granted in the past. There are several steps that community groups, local citizens and disaster relief organizations can do to help people feel more normal in the wake of a tragedy. (more…)

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Portable Restrooms: Bringing Sanitation Across the World

In honor of Earth Day, I think it is time to talk about the worldwide sanitation shortage that exists today.  Living here in the United States it is easy to start taking our sewer and sanitation systems for granted. Almost anywhere you are, sanitary restrooms are likely available to you. Your workplace, your home, your parks all have the necessary sanitary equipment to make sure that your food and water supply remain safe. In most of the developing world this is not the case. In fact, having adequate access to restrooms and sanitary facilities is a luxury, not a requirement. (more…)

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Zack Mohs Life Changing Home Project

When tragedy strikes a family in a community, it is often local residents and businesses that come to their aid. Recently, On Site Companies was contacted by a local Minnesota resident Kris Young. She told us the story of her nephew, Zack Mohs, and about the night that changed their lives forever. (more…)

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Our Friend James

“Community Involvement.” Companies aspire to this goal and frequently consider this an important component of their corporate mission statement. Whether donating to charities, providing sponsorship dollars or in-kind donations for local community events, “giving back” is important and valuable to all involvement. Quite frequently, however, this involvement is generic in nature. “We give to this organization,” or “We contribute this sum of money to this cause.” (more…)

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