national monument. noun. Definition of national monument for English Language Learners. : a place (such as an old building or an area of land) that is owned and protected by a national government because of its natural beauty or its importance to history or science. Britannica.com: Encyclopedia article about national monument.
Brown or discolored water is caused by minerals, sediment, or rust that may accumulate in the water mains over time. When the water from your tap is brown this indicates a disturbance in the water main that stirs up these deposits.
If your water is brown: 1  Donât drink the water. It may not be harmful, but we donât advise drinking discolored or dirty water. 2  Avoid using hot water until the pipes clear to avoid drawing dirty water into the hot water tank.  After an hour or so, run the cold water for several minutes to see if it is clear.