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Portable Restrooms

We’re the Experts in
Temporary Sanitation


We Are Your One Stop Shop

As the largest portable restroom operator in Western, PA, Mr. John is your go-to for portable toilets and sanitation, but what about office trailers, toilet trailers and storage containers? That's where Tri-Boro Trailer's specialties come in, making the Mr. John brand a well-rounded, One Stop Shop.

Since Mr. John and Tri-Boro Trailer go hand in hand, we have specially made discounts and bundles to sweeten the deal even more! Our goal is to make your mission of finding what you need at the right prices, as easy as possible by providing the products you are looking for all at one location.

Where to Use Our Products

Special Events

We have a variety of products that will help make any event a success. From our flush unit to our Elite Toilet Trailers, we can provide the equipment needed to make that special day perfect.


Our portable toilets are an ideal solution for seasonal facilities where permanent restrooms are not available or to supplement their use.


We have been a top provider of portable restroom solutions to the construction industry since 1964.

Oil & Gas

We provides portable toilets, wastewater pumping, security trailers, and storage containers to the Marcellus Shale and Utica Shale Regions.

Emergency Services

Our professional staff is prepared to respond to emergency, disaster relief, or unplanned sanitation needs, with the largest portable restroom fleet in Western PA.

Family Owned and Operated Since 1964

Since 1964, Mr. John has been a family-owned and operated business. We are experts in temporary sanitation and recognized as the leading portable restroom operator in Western Pennsylvania, Eastern Ohio, and West Virginia. Whether you need a construction site portable toilet, restroom trailers and VIP bathrooms for an upscale party, or flush units for a large special event, Mr. John’s diverse fleet and experienced staff will help make it a success.“When quality service counts, call the professionals.”

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Mr. John Pittsburgh Staff