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.
1 On your water test, take note of your chlorine level. 2  A lack of chlorine can be the number one reason why your water is turning cloudy. 3  Without chlorine, your water is not being sanitized, and because of that, particles and contaminants build up in the water.