These resource papers encourage the student to discover for himself the contributions to a problem made through original literature. Since some of the papers are controversial or contradict other papers, the student will need to evaluate them to determine his position. It is hoped that these papers will also foster an appreciation of the work of the scientists involved. The first article surveys water needs and uses. The following article describes some indicators that determine pollution of rivers. The vital role of bacteria, protozoa, and other tiny organisms in providing clean water is described in the third and fourth papers. The next four papers examine specific pollutants. Paper nine portrays the growing concern about environmental damage caused by modifying streams to control floods. The next paper examines how modifications devised by man have affected Galveston Bay in Texas. The final article reports methods for gathering and reporting information on water quality in local areas. (LS)