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Porta Potty Rental in Maryland

We take porta potty rental calls for sites anywhere in Maryland, 24 hours a day. Call (888) 417-6737 with the site address and we connect you with a provider that serves it. 181 Maryland places have their own page here, the largest being Baltimore, Frederick and Gaithersburg. Conditions vary across the state, so each city page carries its own NOAA and Census figures.

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Updated 2026-10-13

A long row of blue portable toilets with white roofs stretching along the edge of a wide, empty grass field under a blue sky with scattered clouds, with a line of trees in the distance.

Rentals Across Maryland

Also: deluxe flushable units in Maryland · compare all unit types.

Event Porta Potty Rental in Maryland

Festivals, fairs, races, parties and community events of any size.

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Construction Porta Potty Rental in Maryland

Job-site units sized to OSHA's construction toilet requirements.

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Wedding Restroom Rental in Maryland

Restroom trailers and deluxe units for outdoor ceremonies and receptions.

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Restroom Trailer Rental in Maryland

Flushing toilets, running water and climate control in a towable trailer.

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ADA Porta Potty Rental in Maryland

Wheelchair-accessible units for public events and job sites.

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Hand-Washing Station Rental in Maryland

Freestanding sinks with fresh water and soap for events and job sites.

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Largest Cities

BaltimoreBaltimore cityFrederickFrederick CountyGaithersburgMontgomery CountyRockvilleMontgomery CountyHagerstownWashington CountySalisburyWicomico CountyLaurelPrince George's CountyGreenbeltPrince George's CountyHyattsvillePrince George's CountyWestminsterCarroll CountyCumberlandAllegany CountyTakoma ParkMontgomery County

Weather and Building Across the State

Heat

Bowleys Quarters, Cockeysville, Edgewood and 1 other listed place share the most hot days of all 181 Maryland places listed here: about 43 days a year at or above 90°F (NOAA normals, Md Sci Ctr Baltimore, MD station). None of the 181 listed places reach 90°F on 60 or more days a year. For most of the state, heat is a summer-month issue rather than a constant one.

Freezing Nights and Snow

Frostburg has the most freezing nights of all 181 Maryland places listed here: about 132 nights a year at or below 32°F (NOAA normals, Frostburg 2, MD station). 5 of 181 listed places average 120 or more freezing nights, when water-carrying units need winterizing or heat for months at a time. Hampstead and Manchester share the most snowfall of the 152 listed Maryland places with this figure: about 34 inches of snow a year (NOAA normals, Millers 4 NE, MD station). 15 of 152 places with snowfall normals average 20 inches or more, enough to plan for a plowed path to the units.

Rain

Green Valley has the most precipitation of all 181 Maryland places listed here: about 48 inches of precipitation a year (NOAA normals, Damascus 3 SSW, MD station). 11 of 181 listed places get 46 inches or more, or 12 or more days with an inch, so firm ground for units and ADA routes matters.

New and Older Housing

Westphalia has the highest share of recent housing of the 152 listed Maryland places with this figure: 60.8% of housing units built in 2010 or later (ACS 2020–2024). 39 of 152 listed places are above the U.S. share of 11.4%. That describes the housing stock, not current permits, but it shows where new-home construction has been concentrated; OSHA's toilet table applies to every one of those job sites. Cumberland has the oldest housing of the 177 listed Maryland places with this figure: a median year built of 1943 (ACS 2020–2024). 53 of 177 listed places have a median year built of 1970 or earlier, where renovation crews in existing buildings are the usual job site.

Climate Regions

Listed places by DOE Building America climate region (county-level, PNNL guide to IECC 2021 zones): Mixed-Humid (179), Cold (2). A state spanning several regions means the right advice depends on the city, which is why each city page has its own figures.

Shoreline Places

9 of 181 listed places have a Census reference point within 5 km (about 3 miles) of the shoreline in the TIGER coastline layer, which includes Great Lakes shores. Beach and waterfront sites need a firm approach for trucks and a firm route for ADA units.

Job-Site Toilet Rules: Federal OSHA or State Plan

Maryland runs an OSHA-approved State Plan, Maryland Occupational Safety and Health (MOSH), Maryland Division of Labor and Industry, that covers most private-sector workers as well as state and local government workers (osha.gov State Plans, accessed 2026-10-13). State Plans must be at least as effective as federal OSHA, so check the State Plan's construction sanitation rule alongside 29 CFR 1926.51. osha.gov lists some coverage exclusions for this plan; the State Plan page shows which work they affect.

The federal minimum, OSHA 29 CFR 1926.51(c), is one toilet for 20 or fewer workers, then one toilet seat and one urinal per 40 workers, or per 50 at 200 or more. Sizing details: construction rentals in Maryland.

Who Handles Event and Street-Use Rules

Of the 181 Maryland places listed here, 34 are incorporated cities, towns, villages or boroughs and 147 are Census-designated places, unincorporated communities without a municipal government. The rule of thumb for an event on public land or a unit on a street or sidewalk: in an incorporated place, ask the city, town, village or borough government; in an unincorporated community, ask the county. We do not say whether a permit is needed; each city page names who to ask.

1 listed places are independent cities or consolidated city-counties, where one government handles both city and county matters.

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Questions About Renting in Maryland

My town isn't listed. Can I still call?

Yes. 181 Maryland places have their own page because they have published Census and NOAA figures, but we take calls for any address in Maryland. Call (888) 417-6737, answered 24/7. Tell us the units you want; the provider confirms what's available for your site.

What weather matters most for rentals in Maryland?

It depends on the city: the median listed place has about 34 days at 90°F and 93 nights at 32°F a year, so check your city's page. (NOAA 1991–2020 normals.)

Does Maryland use federal OSHA or a State Plan for job sites?

Maryland runs an OSHA-approved State Plan, Maryland Occupational Safety and Health (MOSH), Maryland Division of Labor and Industry, that covers most private-sector workers as well as state and local government workers (osha.gov State Plans, accessed 2026-10-13). State Plans must be at least as effective as federal OSHA, so check the State Plan's construction sanitation rule alongside 29 CFR 1926.51. osha.gov lists some coverage exclusions for this plan; the State Plan page shows which work they affect.

What about sites near the Maryland border?

Call the same number. Several listed Maryland places have towns in Virginia, Delaware, Pennsylvania, West Virginia among their nearest neighbours; we connect you with a provider that serves the site's actual address, in whichever state it is.

How many porta potties do I need?

For events, the PSAI chart sizes units by crowd and hours; for job sites, OSHA 1926.51 sets the minimum by headcount; and at least 5% of each cluster should be ADA-accessible.

Don't know where to start?

Call now and tell us about your event or job site. We will help you work out the units you need and connect you with a provider that serves your location.

(888) 417-6737

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