Even though direct h2o piping was discontinued within the 1960s, galvanized pipes ended up even now in use as late as 1990. The corrosion caused by these pipes can Establish up within the drinking water supply. Leaks: Corrosion or rust on the surface of the pipes (normally throughout the joints) https://www.malleableiron-pipefitting.com/industry-knowledge/how-to-connect-non-threaded-galvanized-pipes.html