Category: This textbook provides the basic information about the Environmental Engineering and as such; very much useful for the first year B. Tech. students of all branches/disciplines. The book covers the new syllabus of the semester scheme for the first year in R.T.U. and other universities. It encompasses the practical applications of the subject; that is the real need of the hour and also discusses the major environmental problems we face today.; Key features; Contains authentic information provided by the different Manuals prepared by The C.P.H.E.E.O.; Includes examples of different projects and schemes for illustration.; Simple sketches and easier derivations of the mathematical formulations have been adopted.; Review questions at the end of each chapter are given to test the understanding of the reader.; The practical problems of field and fundamental solutions have been correlated by the vast experience and deep sense of concern to the mother earth.