The two main portable toilet operators in Singapore are Porta
Pumper (run by all female team) as well as K&W...
For the plastic type, there's a holding tank at the bottom of the
toilet seat whereby it holds all the waste & to control the
odour, a superior deodoriser with odour control enzymes from USA.
Foot operated flushing system as well as taps to ensure that your
hand remains clean...the contractors will come with the sludge
tanker to pump out all the waste once in a while...these will be
used at construction sites, grander functions, showflats, etc
For the stainless steel types, the waste directly goes to the sewer
& if you're sharp, you'll notice the inspection cover are
nearby somewhere around the toilet, water is tapped from the mains
which are used for the flushing as well as the sink, lights &
ventilation slots are available all around the toilets. These
toilets are like "legos", you'll need to fix them piece by piece
& if I'm not wrong, there's a total of 4 pieces mainly the
lower part, upper part, roof & door...nowdays, if you notice,
they will be chained to some permanent fixtures such as void deck
waste pipes to prevent them from being stolen...these will be used
at void deck functions & pasar malams...
