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.
What causes copper in your swimming pool? Copper is a metal that can be found in your swimming pool water, improper water. balance is the major cause. Acidic water due from low pH and alkalinity can cause the. heater core to corrode and release copper metals into the water. Another cause is source.