Plumbers in Australia have licensing requirements that differ from state to state but it is generally accepted a 4-year apprenticeship with a further minimum experience of 2 years (6 years total) and a further curricular requirement as a benchmark for licensing. Licensed plumbers are also expected to maintain minimum relevant training requirements to maintain their plumbing license
Despite the Romans' common use of lead pipes, their aqueducts rarely poisoned people. Unlike other parts of the world where lead pipes cause poisoning, the Roman water had so much calcium in it that a layer of plaque prevented the water contacting the lead itself. What often causes confusion is the large amount of evidence of widespread lead poisoning, particularly amongst those who would have had easy access to piped water.[14] This was an unfortunate result of lead being used in cookware and as an additive to processed food and drink, for example as a preservative in wine.[15] Roman lead pipe inscriptions provided information on the owner to prevent water theft.

plumbing, piping systems inside buildings for water supply and sewage. The Romans had a highly developed plumbing system; water was brought to Rome by aqueducts and distributed to homes in lead pipes—hence the name plumbing from the Latin word plumbum for lead. During the Middle Ages, however, plumbing became almost nonexistent. In fact, London's first water system after the Middle Ages (c.1515) consisted partly of the rehabilitated Roman system; the rest was patterned after it. Modern plumbing began in the early 1800s, when steam engines became capable of supplying water under pressure and cheap cast iron pipes could be supplied to carry it. The common materials used today in water supply pipes are steel, copper, brass, plastic, and lead. Plumbing for sewage is made of cast iron, steel, asbestos cement, copper, and plastic. Water pressure is usually insufficient to supply the needs of tall apartment and office buildings; in such cases storage tanks are installed on the roof, into which a pump lifts water. The water then flows through the piping system of the building by gravity. Smaller buildings may have a pneumatic tank for the same purpose. The tank is partly filled with air, which is compressed when water is pumped in so that it will force water through the pipes. Sewage and drain systems typically have a trap, often a loop-shaped section of pipe, to seal off vapors in the pipes from the rest of the building. Vent pipes lead these vapors to the outside of the building; they also eliminate any suction in the piping and thus prevent the siphoning of water from traps when a nearby fixture discharges. In the 1970s and 80s flexible polybutylene plumbing was widely installed in standard and mobile homes. When unprecedented numbers of these plastic pipes began leaking because of exposure to chlorine and other chemicals in tap water, homeowners brought class-action lawsuits against the manufacturers, which were settled in 1995 for hundreds of millions of dollars.


The straight sections of plumbing systems are called "pipes" or "tubes". A pipe is typically formed via casting or welding, whereas a tube is made through extrusion. Pipe normally has thicker walls and may be threaded or welded, while tubing is thinner-walled and requires special joining techniques such as brazing, compression fitting, crimping, or for plastics, solvent welding. These joining techniques are discussed in more detail in the piping and plumbing fittings article.
Hello I had a plumber do an estimate for me to replace our copper pipes with plastic as we have no existing walls up in our basement yet...pretty basic job... so we figured we could upgrade as we do live in Northern Ontario and it does tend to get quite cold here in the winters.  We dont have any existing problems with our plumbing right now just figured it would be good time to do the job and perhaps change the pipes to 3 quarter inch for faster flow.  Well I never thought in all my life I would get an estimate back that would state $350.00 an hour in labor...yes that is correct $350.00 an hour...estimated 10 hours for the job to be completed.  So he quoted me $3500.00 for labor alone.. not supplies?  Well needless to say I will be happy with my half inch copper pipes and will happily wait for my bathtub to fill up at a slower pace.  Just wanted to know what your thoughts are on this $350.00 an hour quote?  Thank you and enjoy your day.
Several of the nation's larger cities were providing water to their residents during the first decade of the nineteenth century, but only infrequently was water actually brought into homes. City-provided water was used in large part to fight fires and flush streets. Household water was most likely taken from a tap located outside of the house or a common hydrant. For those not connected to city mains, and even some who were, there were still other ways to obtain water. If a stream was not near by, there was rain runoff from a roof. It could be collected in one or more tanks located in out-of-the-way places in a house and feed the plumbing system through gravity.

Those who attempted to bring plumbing indoors faced technical as well as attitudinal challenges. Decisions on how wastewater was removed required as much concern as those made to ensure an adequate water supply. But equally vexing was the prevailing miasma theory of disease, which held that illnesses stemmed from "bad air" that was readily identifiable by its offensive odor. This led to a distrust of early indoor plumbing that tended to leak and a deadly fear of the sewer gas that accompanied the leaks. It is no wonder then that many individuals maintained a strong belief that elimination was best taken care of out of doors.

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