Mavirus Group supplies and operates complete trailer infrastructure for basecamps, disaster recovery, large outdoor events, schools, military and government projects, and long term temporary sites. You bring the mission. We bring everything your people need to live and work on it.
When a wildfire camp needs showers for 640 firefighters, or a school district loses a building over winter break, or a festival doubles its footprint, the problem is never one trailer. It's the whole life support layer: sanitation, laundry, meals, cold storage, sleeping quarters, offices and drinking water, all arriving on the same schedule and all serviced without being asked. That's the job we built Mavirus Group to do. Not curbside drops. Sites.

Each category below is a dedicated fleet, not a subcontracted afterthought. Units arrive clean, stocked and tested, with power and water connections planned before the first trailer leaves the yard. Combine any of the twelve into a single contract with one invoice and one site contact.

Private flushing restrooms with running water sinks, climate control and interior lighting. Floor plans run 2, 3, 5 and 9 stations, and banks of multiple trailers handle populations in the thousands. These aren't porta potties. Each station is a real room with a locking door, a flushing toilet and a sink with hot water, which matters when your people are living on site for weeks. On long deployments we schedule pumping, restocking and deep cleaning around your site's hours, so the facilities never become the story of the project. Winter packages keep water systems running through hard freezes, and solar or generator power covers sites without hookups. For basecamps our planners figure one station for every nine occupants. For events it's closer to one station per 85 guests during the peak hour. We'll run those numbers with you during scoping (and we'd rather round up than watch a line form).

Private stall shower trailers with hot water, changing space and ventilation, sized for crews that come off shift dirty and on a clock. Fire camps, shelters and workforce housing run these units hard, sometimes 18 hours a day, which is why we spec continuous water heating and greywater management for sustained cycles rather than weekend duty. Each stall is fully private with its own door, bench and hooks, so a mixed crew can cycle through without staging problems. An 8 station unit turns over roughly 40 to 60 showers per hour when it's run efficiently, and we'll tell you honestly how many units your head count needs instead of letting a line form at 6 a.m. Water supply can come off site hydrants, tanks or scheduled potable delivery, and our crews manage the greywater side completely.

Multi machine washer and dryer trailers that keep a deployed workforce in clean clothes without anyone leaving the site. On extended responses, laundry is a hygiene requirement and a morale line item, not a luxury. Ask anyone who has spent three weeks at a fire camp. Our 8 station units cycle hundreds of loads per week, and detergent, restocking and machine maintenance ride on the same service schedule as the rest of your fleet. Laundry trailers pair naturally with shower and bunkhouse units at basecamps, and they're a common add for shelters, military exercises and remote construction programs where the nearest laundromat is a rumor. Power and water requirements get planned up front with the rest of the site, so the machines actually run at capacity instead of tripping breakers.

Wheelchair accessible restroom and shower trailers with ramp systems, wide doorways, grab bars and turning radius built to code. Public agencies and event producers carry legal accessibility obligations, and inspectors do check. We deliver units that pass, install the ramps ourselves and document compliance for your file, which has saved more than one permit timeline. ADA units can stand alone or anchor a bank of standard trailers, and we position them where the accessible route actually works: grade, path surface and door swing all considered before the trailer is dropped. School districts and municipal projects use these constantly, and so do event sites where a single missing accessible unit can hold up an occupancy sign off. If your site plan needs an accessibility count, send it over and we'll mark it up.

Restroom, shower and laundry functions combined in a single chassis. We deploy combos where footprint is tight or the population doesn't justify three separate units. Think of a 40 person crew camp, a satellite staging area or the support pad behind a mobile command post. One water connection, one power drop and one service visit cover all three functions, which simplifies both the utility plan and the invoice. The 4 station shower, restroom and laundry combo is our most requested layout for small camps, and single station ADA combos solve accessibility on compact sites. But combos aren't always the answer: past roughly 60 occupants, dedicated units usually serve better. We'll tell you which side of that line your project sits on.

Climate controlled sleeper trailers with private bunk rooms, so responders and traveling crews rest properly instead of driving an hour each way to a motel that may not exist after a disaster. Twelve station layouts put a small crew under one roof. Multiple units in formation become workforce housing for a hundred or more, and that's exactly how storm restoration contractors and pipeline crews use them. Each bunk room is private and lockable with power, lighting and climate control, because a crew that slept badly is a safety problem by Thursday. We almost always deploy bunkhouses alongside our shower, restroom and laundry fleets, and our crews lay the sleeping rows out away from generator noise and service traffic. We've learned that lesson so your crew doesn't have to. For multi month programs we rotate and service units without displacing the crew.

Portable walk in freezer trailers holding sub zero temperatures for food service operations, feeding programs and cold chain contingencies. When a facility freezer fails or a feeding mission scales past kitchen capacity, a freezer trailer at the dock keeps product safe and inspections clean. Units run on generator or facility power, and they hold temperature through door cycles because they're built for working kitchens, not showroom demos. Feeding operations at basecamps lean on these daily, and institutions use them through renovations, equipment failures and seasonal surges. Health inspectors want temperature records, so we offer monitoring and logging on request. Place a freezer and a refrigeration trailer side by side at the kitchen and you've rebuilt a full commercial cold chain in a parking lot.

Refrigerated trailers for produce, dairy, medical supplies and any operation that needs walk in cooler capacity brought to the site. Mobile kitchens, shelters and commissaries pair these with freezer units to build a complete cold chain in the field, with temperatures logged and equipment serviced by our crews. Cooler range holding is a different job than freezing, and the equipment is specced accordingly: consistent temperatures, high door cycle tolerance and enough capacity to receive full pallet deliveries. Emergency feeding missions, school kitchens mid renovation and event caterers all run on these. So do medical and pharmacy operations that need documented cold storage in a hurry. Tell us what you're storing and for how long, and we'll size the box, the power and the monitoring to match.

Potable drinking water stations that dispense chilled water for crowds and crews, cutting pallets of single use bottles out of the budget and the waste stream. At summer deployments, heat safety plans live or die on water access, and a station that chills and dispenses continuously beats a bottle table every time. These units support OSHA aligned heat illness prevention programs and refill from approved potable sources on a schedule we manage. Festivals use them to hit sustainability targets. Fire camps and construction programs use them because dehydrated crews get hurt. Stations deploy as singles at a jobsite gate or as a distributed grid across a large event map, and we'll place them where the crowd actually walks (not where the truck happened to park). Cal/OSHA heat rules and OSHA's federal guidance both treat water access as a compliance item, and safety officers know it.

Shower based decon units for fire, hazmat, abatement and environmental remediation work, where personnel must wash down before leaving the exclusion zone. Hot water, controlled drainage and clean side separation support your site safety plan, and our service crews handle wastewater according to the disposal requirements of the job, documented the way your environmental consultant wants it. Wildfire ash, asbestos abatement, mold remediation and industrial cleanup programs all carry decon requirements that a standard shower setup can't legally satisfy. That's the gap these units close. We coordinate placement with your safety officer so the dirty to clean flow works on the actual ground, and on long remediation contracts the decon line gets the same scheduled service cadence as any other fleet on site.

Climate controlled mobile offices for incident command posts, site management, security and check in operations. Every serious deployment needs a room with a desk, power and a door that locks. Sometimes that's a superintendent's office on a two year project. Sometimes it's the command post coordinating a county's storm response, with radios on the table and a map on the wall. Office trailers arrive ready for power and data, with HVAC that keeps electronics and people functional in July and January alike. We place them at the natural control point of the site, near the gate for check in operations or at the center of camp for incident command, and they hold up to years of continuous occupancy because that's what they're built for.

Full production mobile kitchens for feeding operations at responder basecamps, shelters, institutions and campuses mid renovation. Cooking lines, prep space, ventilation and service windows arrive ready for your food service provider to plug in and start producing meals at volume. A properly equipped kitchen trailer can put out hundreds of hot meals per service, and paired refrigeration and freezer trailers complete the operation as a self contained food program. Health code readiness is the whole game here, so equipment, surfaces and handwash stations are specced for inspection, not just for cooking. School districts bridge cafeteria renovations with these. Emergency feeding missions build entire camp food service around them. And event producers use them when the caterer needs real production capacity behind the scenes.
Any rental yard can drop a single trailer at a curb. We built Mavirus Group for the other kind of job: dozens of units, multiple categories, real logistics, and stakes that don't tolerate a missed delivery. In our experience, the mission is never really about trailers. It's about whether your people can eat, sleep, wash and work.

A functioning basecamp is a small town. Five hundred people sleep, shower, eat, wash clothes and report for shift inside a footprint the size of a parking lot, and the layout decides whether that works or turns into lines. We design the layout with you before mobilization (down to which trailer gets dropped first), sequence the deliveries so the site builds in the right order, and keep a service schedule running for the life of the camp.
Utility planning is half the battle. Our team maps water supply, power distribution and wastewater handling for every unit on the plan, then shows up with the fittings to make it work on real ground. Paper plans are easy. Dirt is not.

Hurricanes, wildfires, floods and grid failures create the same problem in different clothes: a lot of people, displaced or deployed, who need sanitation and shelter infrastructure immediately. We've supported Cal Fire and US Forest Service fire operations and FEMA disaster relief missions, and the pattern never changes. Speed decides everything. Our emergency line answers around the clock, and mobilization can begin the same day the request comes in.
We've run responder camps and community recovery operations where the schedule was measured in hours, not days. Units stage in convoys. Our drivers carry the site plan. The first facilities are operational while the rest of the camp is still rolling in, because a shower that arrives Thursday doesn't help a crew that got dirty Monday.

Festivals, marathons, county fairs and stadium overflow events concentrate enormous crowds on sites with no plumbing. We build restroom and hygiene capacity matched to your projected attendance and peak surge windows (intermission is always the stress test), with overnight servicing between event days so day two opens as clean as day one. Health departments notice. So do ticket holders.
Producers get one contract covering restrooms, ADA units, water stations and support offices, plus a single site contact who has done load in on tight urban footprints and open fairgrounds alike. We work from your site map and production schedule, hit the marshaling windows your city permit demands, and clear the site on strike night as fast as we built it. Your permit file gets our insurance certificates and unit specs without anyone chasing them.

When a campus building goes offline for renovation, mold remediation or storm damage, classes still meet. We place restroom, ADA and support trailers on campuses with the background checked crews, insurance certificates and safety documentation that districts and their risk managers require before anyone drives past the gate. Superintendents don't want a vendor education project. They want it handled.
Multi semester placements are normal here. Units are positioned to keep sight lines, fencing and student traffic patterns intact, and service visits are scheduled around school hours, usually before first bell. Universities use the same program for stadium overflow, campus events and dormitory renovations, where a semester without facilities simply isn't an option the housing office can offer.

Public sector work runs on paperwork and reliability. Mavirus Group is a SAM.gov registered federal contractor with deployment history supporting Cal Fire, the US Forest Service and FEMA disaster relief missions. We understand procurement cycles, prevailing documentation and invoicing that survives an audit, because we've been through the audits.
City and county municipal projects get the same treatment. Water treatment plant rehabs. Civic facility renovations. Parks projects that displace a public restroom building for a season. Certificates of insurance arrive before mobilization, W-9s and compliance documents come same day on request, and the fleet shows up when the PO says it will. We've sat through enough pre construction meetings to know the vendor who slows down paperwork becomes the vendor who gets replaced.

Plant shutdowns, refinery turnarounds, multi year construction programs and facility relocations need infrastructure that behaves like a permanent installation. We support placements measured in months and years, with maintenance programs, seasonal winterization and unit swaps handled without interrupting your operation. Month twenty should look like day one. That's the standard we hold the fleet to.
Long term customers get scheduled quarterly reviews of unit condition and service records, so the facilities on month twenty look and work like they did on day one.
The process is the same whether the order is one office trailer or a forty unit basecamp. The only thing that changes is how fast we run it. On emergency activations, steps one through three happen in a single day (we've done it between a morning call and a sundown delivery).
Head count, duration, site conditions, power and water availability, and any compliance requirements. Fifteen minutes on the phone usually covers it.
We produce a unit list and placement plan: what goes where, how it connects, and the delivery sequence that builds the site in the right order.
Every unit gets a full clean, a supply load and a systems test before it rolls. Drivers arrive with the site plan in hand, then set, level and connect each trailer.
Pumping, fresh water, restocking and repairs run on a schedule matched to your occupancy, with an emergency line for anything between visits.
When the mission ends, we pull units on your timeline, close out utilities and leave the ground the way we found it.
These are the working ratios our team starts with when we scope a site. Terrain, shift patterns, weather and duration all move the numbers (a 24 hour operation is a different animal than a day shift camp), but they'll get your budget conversation into the right neighborhood before the first call. "Size for the surge, not the average" is how our operations lead puts it, and he's right.
Plan one restroom station for every nine occupants or so, and one shower stall for roughly every eleven people, assuming staggered shifts. A 280 person camp typically lands around four 9 station restroom trailers, three 8 station showers, one or two laundry units and a kitchen with paired cold storage. Bunkhouse counts follow your rooming plan, usually one 12 station unit per dozen personnel. Sites running 24 hour operations need service visits daily, not weekly.
Our event planners figure one restroom station per 85 guests in the peak hour, weighted toward intermission and closing surges. A 12,000 person festival day usually calls for a bank of a dozen large trailers (give or take) plus dedicated ADA units on every accessible route. Add water stations at roughly one per 1,800 attendees in summer heat (more if the site has long walks between stages). Multi day events need overnight servicing built into the contract, and we schedule it without being reminded.
An 8 station shower trailer turns over roughly 45 showers an hour with disciplined flow, and closer to 60 when a crew boss is standing at the door. "The line tells you the truth about your unit count," as one of our field leads likes to say. If 380 firefighters come off shift in a 3 hour window, you need at least three units running simultaneously plus water heating capacity to match. For laundry, one 8 machine trailer supports about 130 people on a normal wash cycle rotation. Underbuying either one shows up as lines, and lines show up in morale reports.
A shower runs about 30 gallons per use. A restroom station burns 2 or 3 per flush cycle. A working kitchen drinks water by the barrel, all service day long. That water has to arrive, get heated and leave as managed wastewater. Every quote we issue includes the utility math: supply source, tank sizing, generator loads and pump out frequency. "Plan the water before the trailers" is the first rule our dispatch team teaches new hires. If a vendor hands you a trailer count without a utility plan, they've handed you the easy half of the problem.

Most large deployments don't fail on equipment. They fail on coordination. Five vendors, five delivery windows, five service schedules and nobody holding the site plan. By week two the restroom vendor is blaming the water vendor, and the person who signed the PO is refereeing instead of running the mission.
We built Mavirus Group to remove that failure mode. One contract carries the whole fleet. One dispatcher sequences every delivery. One service crew covers pumping, water, restocking and repairs on a cadence set by occupancy, not by whoever answers the phone. And when something breaks at 2 a.m., there's one emergency number, and it rings a person with authority to fix the problem.
Government and enterprise buyers don't just need trailers. They need a contractor whose registrations, insurance and history stand up to review before the first unit ships. We keep ours audit ready year round.
Tell us the mission, the head count and the ground. We will come back with a unit list, a site plan and a mobilization date.