Copper is the supply water that carries water into the house and drain carries water out of the house. Many homes new and old built around Los Angeles County have copper, CPVC plastic, PEX or the old galvanize pipes, as their source of water supply to their showers, faucets, toilets and etc. Copper pipes are very durable and have a life of 40 to 50 years. There is 4 kinds of copper available to home owners and contractors, follows K,L,M and DWV copper. K type copper is the most durable and expensive that is used for under concrete slab foundations. L type is also durable which is used for all types of water supply has a thicker wall than "M" type. "M" type is the lighter weight and cheapest copper price wise. As contractor and owner of Extreme Plumbing I always use "L" or "K" type for my copper repipe jobs. DWV copper is mainly used for drains vent and waste. unlike galvanize pipes copper does not built up corrosion, any contractor or plumber that performs copper re-pipes should do their 100% best to clean copper pipes after they are soldiered together. IF a house has copper it is very easy for a plumber to repair a leak other than old galvanize pipes are very hard to repair leaks. IF you as a home owner hire us to replace your old pipes with new pipes, we do our 100% best not to damage dry wall, stucco and etc. We will open walls as much as we need to. Copper re-pipes jobs, regular 2 bathroom, kitchen, laundry, water heater houses takes our team of professionals to complete in approximately 4 to 5 days. We will give you one full bathroom to use during the job phrase so no need to move out during this repairs. Copper re-pipe will always increase the value of your home. Please feel free to give us a call if you have any questions towards water leaks or copper pipes, well do our 100% positive attitude to answer them.