Mon - Sat 7:00 am to 7:00 pm
Find Sustainable Porta Potty
in Mercer Island
At Prime Dumpster, we arrange porta potty rentals throughout Mercer Island, Washington, an island city of about six and a half square miles sitting in the middle of Lake Washington. Units are placed for home remodels and view lot construction on the north end, utility and road work along Island Crest Way, waterfront and park events at Luther Burbank and Mercerdale, school and club gatherings, and the shoreline projects that come with living on a lake.
The figure turns on which unit, how many, how long and how often a truck returns. Mercer Island also publishes something most cities do not, namely a restroom chart of its own plus a rule that your order paperwork goes into the application file.
Those ranges assume three days, which suits most island bookings. A single Saturday event prices much the same, because the delivery and collection runs happen either way.
Island geography cuts two ways. Every delivery crosses one of two bridges, so a last minute order competes with Eastside traffic. Island jobs are small and close together, which keeps service routes short. Guest facing bookings tend toward the upper end, because a lakeside wedding usually wants flushing units and a sink in the stall.
One Mercer Island rule has a direct cost consequence. The City's event tiers are priced, and needing additional restrooms is one of the criteria that lifts an event into a more expensive one. A festival-style event or one expecting 601 to 5,000 people sits at the top tier, which the City's special event information packet prices at $1,650 on top of a $50 application fee. So the unit count is not only a rental decision.
Access finishes it off. A unit down a steep lakeside lot or behind a gate on a narrow lane takes longer to reach and costs more to service.
Looking for a dependable porta potty rental solution? Contact us today for a free quote! We're here to provide you with a straightforward and competitive estimate for all your porta potty rental needs. Find out how easy sanitation can be with Prime Porta Potty.
Received your quote and ready to proceed? We make choosing your porta potty rental simple and efficient. Contact us to select the best options for your needs and we'll take care of the rest.
Scheduling your porta potty delivery is a breeze. Just tell us when and where you need it, and we’ll handle the rest. Prime Porta Potty is all about quick and reliable service, getting the right unit to your site when you need it.
Done with your event or need your porta potty serviced? Just give us a call to arrange a fast and convenient pickup. We’re ready to quickly remove or service your unit and make your experience hassle-free.
The prices below reflect average ranges for a standard five-day rental period. Your account manager will confirm tonnage, overage rates, and other project specifics during your free, custom quote.
| Unit Type | Average Price Range | Best For |
|---|---|---|
| Standard Porta Potty | $199–$349 | Construction sites, small events, backyard projects |
| ADA-Compliant Porta Potty | $200–$300 | Public events and job sites that need an accessible unit |
| Deluxe Flushing Porta Potty | $300–$400 | Weddings, parties, and guest-facing events |
| Deluxe Porta Potty with Sink | $300–$400 | Events where guests need a sink inside the unit |
| Solar Porta Potty | $500–$600 | Remote sites and off-grid events |
| Handwashing Station | $150–$250 | Food areas, job sites, and events |
| Restroom Trailer | From $1,500 | Weddings, corporate events, and long-term sites |
Perfect For:
Starting At: Contact Us For Best Price
*Specifications and exact dimensions may vary slightly based on model and location
Request a Quote Now
Perfect For:
Starting At: Contact Us For Best Price
*Specifications and exact dimensions may vary slightly based on model and location
Request a Quote Now
Perfect For:
Starting At: Contact Us For Best Price
*Specifications and exact dimensions may vary slightly based on model and location
Request a Quote Now
Perfect For:
Starting At: Contact Us For Best Price
*Specifications and exact dimensions may vary slightly based on model and location
Request a Quote Now
Perfect For:
Starting At: Contact Us For Best Price
*Specifications and exact dimensions may vary slightly based on model and location
Request a Quote Now
Perfect For:
Starting At: Contact Us For Best Price
*Specifications and exact dimensions may vary slightly based on model and location
Request a Quote Now
Perfect For:
Starting At: Contact Us For Best Price
*Specifications and exact dimensions may vary slightly based on model and location
Request a Quote Now
Perfect For:
Starting At: Contact Us For Best Price
*Specifications and exact dimensions may vary slightly based on model and location
Request a Quote Now
Perfect For:
Starting At: Contact Us For Best Price
*Specifications and exact dimensions may vary slightly based on model and location
Request a Quote NowThis is one of the few cities in the region that publishes a chart, so you can plan against the City's own figures.
Our porta potty calculator will give you an opening figure, and your account manager will reconcile it against the City chart before anything is ordered.
On a small island with short service routes, unit choice is mostly about who sees it. The island selection is set out on the porta potty options page.
The Standard Porta Potty holds a toilet, urinal, paper holder and sanitizer in one stall, with the inside latch Washington requires.
The ADA-Compliant Porta Potty runs wider, loses the door step, and adds grab bars with turning space inside. Island park bookings should carry one in every cluster.
The Deluxe Flushing Porta Potty flushes and keeps odor down, which is what a lakeside wedding party expects.
The Deluxe Porta Potty with Sink puts a sink, soap and mirror inside the stall, which saves space in a tight park layout.
The Solar Porta Potty lights and vents from a roof panel, useful on shoreline and trail work where there is no power to borrow.
The Handwashing Station is a separate sink holding clean water, soap and towels. Every island construction order should carry one, since warm wash water is required at the site.
The Restroom Trailer arrives with private plumbed stalls and climate control, and it is the only workable answer to Washington's requirement for a private space to express milk, which may not be a bathroom or a portable toilet.
Give your account manager the guest count or the crew split and the mix is built around it.
On private ground that you own or control on the island, no permit covers the unit itself.
Events, and this is the Mercer Island point to plan around: the City's event packet asks for a site layout and map showing the site of portable toilets and garbage collection, and says in terms that a copy of the work order or invoice is required. It then lists a portable toilets and sanitation plan as its own submittal item, and notes that the City provides no equipment rentals and no staff to place equipment at event locations. So on Mercer Island the order has to be placed before the application can be completed, which is the opposite of how most organizers sequence it. Your account manager can issue that paperwork early so the filing is not held up.
Streets, sidewalks and the right of way: the City runs two instruments and they are not interchangeable. A right of way use permit is the temporary route and no priced row on it names a portable restroom, so ask the city engineer what your placement needs. A right of way encroachment agreement is the broader one, reaching anything of height or size placed into a sidewalk, street or other right of way, including fill, retaining walls, rockeries, plants and any other material or structures. Two limits matter: it is an application for a land owner, and the applicant has to show the special topographical conditions that warrant the encroachment. So a visiting event organizer, or a contractor who does not own the abutting lot, is outside that route.
A removal date hiding in the nuisance rules: the city code declares a nuisance to include an obstruction to a street, alley, crossing or sidewalk which, having been made by lawful permission, is kept after its purpose has been accomplished. A permitted placement left in the street past the job stops being permitted, so agree a collection date.
What the code does not say: the island's health and safety rules, its sewer regulations, its parade rules and its traffic rules name no portable toilet or chemical toilet anywhere. So there is no island-specific prohibition to work around.
Who may pump the unit: Public Health for Seattle and King County certifies the companies that service portable toilets, and names portable toilet pumping as its own business category in its liquid waste pumper and hauler certification. Every pump vehicle is inspected before the certification is approved or renewed, each disposal site signs a letter authorizing the company to bring waste there, and the certification expires on 31 December each year. The county's environmental health team answers on 206-477-8050.
Unsure which counter owns your site? Your account manager will confirm it before a date is set.
Island sites are small and close to the water, so placement is about slope and the lake rather than acreage.
Set the unit on firm, level ground with a straight truck approach. Washington requires in terms that provisions be made so trucks have a clear approach and convenient access to the toilets being serviced, which is a useful sentence on a narrow island lane. On a sloped lakeside lot a gravel pad is worth building.
Keep units 15 feet or more from food service and well back from the shoreline, the storm inlets and any stream running to the lake. On an island job site the units stay within 200 feet of every worker, and on every third floor of a multistory build. At an event, split the order into clusters and keep each accessible unit on hard, level ground.
A Mercer Island visit pumps the container, disinfects the seat and the urinal, wipes down the interior and leaves fresh paper and seat covers. Washington will not let the container pass half its volume before the scheduled service, so a busy weekend event often needs a mid event stop. Units built as a holding tank alone are not acceptable here unless they stand inside a lockable private room.
Waste from an island unit travels to the King County septage facility at the South Treatment Plant, which lists chemical toilet waste as its own accepted category, and the service crew needs a current county certificate plus a signed annual disposal permit to tip there. Your account manager sets the visit pattern and will settle any placement question before the truck crosses the bridge.
To learn more about the benefits of portable toilets, check out our blog post “Benefits of Porta Potty Rentals.“
Most island orders can be on site within 24 to 48 hours. Three to five days of notice is better, because every delivery here crosses a bridge and shares the interstate with Eastside commuters. For a summer park festival or a wedding in peak months, allow several weeks.
Five habits that keep a Mercer Island delivery smooth:
Client Reviews
Prime Dumpster arranges porta potty deliveries across Mercer Island and the King County communities a short drive over either bridge, including Bellevue, Seattle, Renton, Issaquah, Kirkland and Redmond. Whether your site sits on the north end, in the town center or down a lakeside lane on the south end, the delivery, service and collection are planned around your dates.
A standard island unit runs $199–$349 and an accessible unit $200–$300. Flushing and sink models land at $300–$400, solar units at $500–$600, and a restroom trailer opens at $1,500. Island events often sit at the upper end because of the unit types they choose. Your account manager prices the island order during your free quote.
Mercer Island publishes its own guideline: one restroom per gender for every 200 persons, with a crowd by hours chart. At four hours that chart gives 6 units up to 1,000 people, 10 at 3,000 and 16 at 5,000. Your account manager will match the order to it.
Washington sets its own table and it is tighter than the national one. One toilet covers up to ten workers, two cover 11 to 25, three cover 26 to 40, four cover 41 to 60 and five cover 61 to 80, then one more for each extra 20. Warm wash water is required too.
Weekly service is the island baseline, with a Washington limit over it: the holding container may not fill past half its volume before the scheduled visit. Each island stop empties the container, disinfects the seat and urinal, wipes the inside and restocks paper and seat covers. Busy island weekends often need a mid event visit.
On ground you own or control on the island, no. Street, sidewalk and park space is different, and the City runs a right of way use permit for temporary work plus an encroachment agreement that only a land owner may apply for. Your account manager can help you work out which applies.
A standard island unit is one narrow stall with a toilet, a urinal and sanitizer. The accessible model is wider, has no step at the door, and carries grab bars with room to turn a wheelchair. On a public island event, put one in every cluster, and make a lone unit the accessible model.
A weekend needs no adjustment, because our island ranges rest on three days. That puts a standard unit at $199–$349, a flushing unit at $300–$400 and a handwashing station at $150–$250. Your account manager will confirm the Friday delivery window, any mid event service stop and the Monday collection.
Tell us about your event or project and your zip code. We will issue the work order you need for the City file, size the order against the island chart and give you a clear figure on the call.
Your Prime Dumpster account manager handles the details, from unit count and service schedule to permit contacts and delivery timing, so you can focus on your event or project.
| Business Name: | Prime Dumpster |
| Address: | Mercer Island, Washington 98040 |
| Phone: | 206-791-3391 |
| Website: | https://primedumpster.com/ |
Find your location
Find all porta potty rental resources in one place, from pricing and unit types to permits and planning guides.
Learn more details about porta potty rental pricing, including easy tips to save money.
Permit requirements can vary by project and location. Learn more about porta potty permits, regulations, and planning requirements.
Give us a call today so we can help you find the right waste & sanitation solution for your project!
