Variations
Newer models include toilet paper and, occasionally, antibacterial hand sanitizer dispensers. It has become common for portable toilets to be paired with an internal hand washing station. These sink stations provide a foot pump to dispense water to wash one's hands after using the toilet. Soap and towels may be provided.
Another common pairing are portable toilets on trailers known commonly as a "portable toilet trailer". These trailers are typically found in 1-2 toilet configurations with a hand wash ability using either a hand washing station or a plastic barrel full of water. These trailers are often seen on agricultural fields or at road construction sites. These restrooms are ideal for situations where the workers (users) are very mobile. However this configuration has proven problematic, most modern portable toilet waste tank designs have proven inadequate to deal with the common problem of splash-outs from the waste holding tank while being towed down bumpy roads. Also when being towed the high winds blow in from the vents creating a hurricane effect inside ejecting any toilet paper rolls from the portable toilet if it's not secured.
'Luxury' portable toilets also exist. These are typically conventional domestic plumbing fixtures within a portakabin-like structure. They are typically mounted on large "office-like" trailers or made from converted shipping containers. They contain every amenity that a public bathroom would have such as running water, flushing toilet, stalls, urinals, mirrors, lighting, and even air conditioning and hot water in some cases. However these luxuries come at a price as these trailers typically cost 40x more than a typical portable toilet to buy or rent. They are commonly found at weddings, high end events/charities, and movie shoots.
Read more about this topic: Portable Toilet
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