You won't always need to call a plumber to help you fix a nasty clog if you treat your pipes right. Don't use your toilet or kitchen sink like a trash can by stuffing hard to flush material down the drain or pouring fats and oils down the pipe. Throw coffee grounds and eggshells in the garage instead of in your sink. Also, only use your toilet to flush human waste and toilet paper, because any other materials could clog your commode.
Plumbing originated during ancient civilizations such as the Greek, Roman, Persian, Indian, and Chinese cities as they developed public baths and needed to provide potable water and wastewater removal, for larger numbers of people. Standardized earthen plumbing pipes with broad flanges making use of asphalt for preventing leakages appeared in the urban settlements of the Indus Valley Civilization by 2700 BC. The Romans used lead pipe inscriptions to prevent water theft. The word "plumber" dates from the Roman Empire. The Latin for lead is plumbum. Roman roofs used lead in conduits and drain pipes and some were also covered with lead. Lead was also used for piping and for making baths.