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.
Water containing oxidized iron is filled with reddish rust particles visible in the water when first drawn from the tap. This is commonly referred to as red water iron. Red water iron causes the same problems which are caused by clear water iron. Reddish-brown stains on clothes, porcelain, and cooking utensils. When iron water is mixed with tea, coffee or alcoholic beverages, the mixture commonly referred to as red water iron.