Porta Potty History: Why is a Toilet Called a John?

We all have our favorite endearing term for the restroom or, more specifically, the toilet. A common term that most have heard, whether you use it or not, is “the john.” If you’ve ever wondered where the term came from, we’re here to uncover the mystery. Taking a look through history, there are actually two… Read more »


Mr. John & Tri-Boro Trailer Announces New Controller

Mr. John & Tri-Boro Trailer are excited to announce the promotion of Alex McCarthy to Controller, effective June 22, 2020. Alex will be responsible for managing the company’s finance and accounting departments, with a focus on analytics and data driven decision making. Alex joined Mr. John in June 2001 as a seasonal employee and started… Read more »


Introducing the Sani Stand!

In addition to our Freshwater Sink, we are now excited to offer another free standing hand cleansing option, our NEW Sani Stand!   Our Sani Stand takes seconds to setup, is easy to relocate and has a heavy duty base that helps prevent tipping. Each mobile sanitizer station includes two hand sanitizer dispensers, and is delivered filled with hand… Read more »


10′ Containers and 40′ Container Office & Storage Combos added to our Fleet!

In addition to our 20′ and 40′ Storage Containers, Mobile Office Trailers and 20′ Ground Level Office Containers, Mr. John and Tri-Boro Trailer now offer 10′ Storage Containers and 40′ Container Office & Storage Combos!   10′ Storage Container Tri-Boro Trailer’s 8×10 storage containers are safe, convenient, and small enough to fit in a standard parking spot…. Read more »


Mr. John Guidelines on When to Use Cloth Face Coverings

At Mr. John & Tri-Boro Trailer we recommend all employees abide by the following guidelines for wearing cloth face coverings during working hours: Any time you are within 10 feet of coworkers or others, at MJ & TBT facilities, customer sites, or public spaces. The exception being when alone in a fully enclosed vehicle. The… Read more »


A message from our President Chris McCarthy

Like all of you, my top priority is protecting my family, fellow colleagues, and the people still working to serve our communities during these unprecedented times. As an essential business Mr. John and Tri-Boro Trailer remain open and operational, aiding in this nation’s waste collection, water transportation and support of critical infrastructure. We deeply appreciate… Read more »


Point of Emphasis: Physical Distancing

A point of emphasis for all Mr. John & Tri-Boro Trailer employees is to maintain 6-8 feet minimum physical distancing between coworkers and others, as recommended by the CDC. This is an important rule that can help prevent the spread of COVID-19, along with proper hygiene. We encourage everyone to communicate with each other about… Read more »


Mr. John & Tri-Boro Trailer REMAIN OPEN as Life Sustaining Business

On Thursday, 3/19, Governor Tom Wolf ordered the closure of all non-life-sustaining businesses in an effort to slow the spread of the coronavirus. Mr. John & Tri-Boro Trailer remain open as they qualify as life-sustaining businesses according to the guidelines set forth by Governor Wolf.  Life-Sustaining Business List Qualifying Industry Groups Commercial and Industrial Machinery… Read more »


Updated COVID-19 Protocols

Plan, Prepare, Respond Mr. John & Tri-Boro Trailer are referencing the following resources for guidance on how to operate safely. Centers for Disease Control and Prevention (CDC) Pennsylvania Department of Health Allegheny County Health Department We are continuing to do everything we can to keep employees, customers, and their families safe, including: Cleaning & Disinfecting… Read more »


Mr. John’s Response to Coronavirus Disease 2019 (COVID-19)

Mr. John & Tri-Boro Trailer are taking precautions to Plan, Prepare and Respond to Coronavirus Disease 2019. Employee and Customer Safety The health, safety and security of our customers and employees are our highest priorities. In response to the coronavirus, we are taking additional measures to make our cleaning and hygiene protocols even more rigorous…. Read more »