Early in the twentieth century, Lake Konfa became very polluted  Recently fish populations have recovered as release of industrial pollutants has declined and the lake' s waters have become cleaner  Fears are now being voiced that the planned construction of an oil pipeline across the lake' s bottom might revive pollution and cause the fish population to decline again  However, a technology for preventing leaks is being installed
Ttherefore, provided this technology is effective, the fears are groundless
Changes in land use and drainage patterns around the lake mean that the lake's waters are increasingly likely to be affected by agricultural runoff.