Custom trailer manufacturer chooses Saniflo above-floor grinding and shower solution for ADA-compliant public restroom and shower trailers

Case Studies 01/25/2022

Custom trailer manufacturer chooses Saniflo above-floor grinding and shower solution for ADA-compliant public restroom and shower trailers


BUFFALO, NY — Montondo Trailer was founded in 2014 by Jack Montondo, who built the business like he builds his trailers – from the ground up. His company specializes in creating custom restrooms, showers, and speciality trailers. Each trailer is built in-house, which allows Montondo to have complete control over the design and the material used.

The biggest industries the company serves are disaster relief and homeless outreach organizations. Montondo also works with school districts, sheriff departments, rental companies, and government agencies. They offer portable restrooms, showers, laundries, bunk beds, or a combination of these applications. They can also customize a solution to provide for customers’ needs, including ADA-compliant restroom stalls and showers.

As a consequence, Montondo had to find a mobile plumbing solution to accommodate an occupant with disabilities, while also providing above-floor drainage for the toilet or shower through the back of the trailer.The wheelchair-accessible trailers don’t use Montondo’s typical plumbing solution that pumps discharge underneath the trailer into a waste tank. Because there needs to be room for a wheelchair ramp, the discharge must pump up and through the floor to the back of the trailer where the waste tank is located.

“Performance, quality and price were primary factors behind our decision to install Saniflo,” says Clayton Spaeth, who serves as the Administrative Director.

“If we have to pull a toilet out of a trailer that’s halfway across the country, that wouldn’t be a good thing,” he continues. “We needed a macerator that could last and handle heavy usage.”


Montondo ultimately chose the Sanibest Pro and the Sanigrind Pro grinder systems, as well as the Sanishower drain pump to provide black water and gray water drainage for their ADA-type trailers. The Saniflo grinder system Montondo installs depends on the customer’s trailer-size preference, which impacts the length of the macerating system’s discharge pipe run.

The Sanibest Pro is a heavy-duty grinder engineered to quickly dispose of larger objects that might well clog a conventional toilet, especially in a heavily used public setting. The wastewater is picked up at the bottom of the container by the pump impeller mounted beneath the one-horsepower motor. The waste can then be discharged a maximum of 25 feet vertically and/or 150 feet horizontally.

In the 1,600-square foot ADA restroom trailer, you will find the Sanibest Pro unit situated behind the toilet tank and toilet bowl. The discharge line connects to the waste tank on the back of the trailer, with a short discharge pipe run of 1.5 vertical feet and 4 horizontal feet.

For longer-distance discharge runs in the trailer, Montondo installs Saniflo’s Sanigrind Pro. Its one horsepower pumping system is also designed to handle the flushing of larger sanitary products. The grinder system is ideal for uncontrolled environments in both residential and commercial applications. For both applications, the discharge runs “uphill,” which allows Montondo to position the trailer lower to the ground to accommodate an ADA-compliant ramp.

In some of the ADA restroom trailers, Montondo installs Saniflo’s Sanishower drain pump. This residential and commercial pump can discharge gray water waste up to 12 feet vertically and 100 feet horizontally. It moves the water to the waste tank located at the back of the trailer before it is disposed of.

The water source for the shower and the sink faucets comes from the 200-gallon fresh water tank inside each trailer.


According to Montondo each trailer takes about 8-10 days to build, while the installation of Saniflo plumbing requires only 2 hours. Montondo makes on average 2-3 ADA-compliant trailers per month and has built about 72 ADA-compliant trailers, featuring the Saniflo plumbing, over the last two years.

Their most recent fleet of trailers were shipped to the City of Los Angeles Supply Services to provide wheelchair-accessible restrooms and showers to the homeless community. City officials have offered positive feedback, saying while the usage is extreme, they have not had any issues with the plumbing.

Montondo’s Julio Serrano, a licensed plumber, states, “The versatility of the Saniflo system is the main reason for continued use in our ADA trailers. Installation is straightforward, whether installing the Sanibest, the Sanigrind or the Sanishower. They fit the application perfectly.”

Montondo’s Sales Manager Daniel Pfohl adds: “Overall, 95% of our customer feedback about our trailers is positive. And we haven’t had any issues with the pumps installed.”

Saniflo SFA used to create ADA-compliant public restroom & shower trailers


SFA SANIFLO U.S.A. – whose parent company originated macerating plumbing technology — offers a complete line of waste and drainage pumping systems for residential and commercial applications. Saniflo developed its innovative, “above-floor plumbing” technology more than a half-century ago and has led its commercialization worldwide. Today, the company markets macerating technology through 24 subsidiaries in 50 countries and has sold more than seven million units worldwide since 1958. Saniflo markets through independent sales agents throughout North America, and the product line is currently available at distributor and dealer locations throughout the United States and Canada.

For more information, contact Saniflo at 1-800-571-8191. Or visit the Saniflo website at

For editorial assistance, including photography, contact John O’Reilly c/o GreenHouse Digital + PR: 815-469-9100 or