Water main and Water piping

Water main noun - Main (a pipe or conduit) for conveying water.

Water piping and water main are semantically related in waterway topic. In some cases you can use "Water piping" instead a noun phrase "Water main", when it comes to topics like conduit, water pipe, waterline, water line.

Water main and water piping are semantically related in waterway topic. You can use "Water main" instead a noun "Water piping", if it concerns topics such as conduit, water pipe, waterline, water line.