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Yes plumbing has advance over the years ! most plumbers are now making use of electrofusion when it comes to waste and siol water systems and even main water supplies for drinking and irrigation and all sorts of uses.
sanatary ware has improved and more Sola systems are being use as part of the green house aplication
more people have switched over to Gas for in house hold and industrial plumbing combined !
many different materials have also come on the market place make plumbing very user friendly for the Do it yourself person , but for the professional Plumber there remain many Challengers' if he has passion for the profession!!
