The other definition the enrichment of water by nutrients especially compounds of nitrogen and phosphorus, causing an accelerated growth of algae and higher forms of pl lant life to produce an undesirable disturbance to the balance of organisms and the quality of the water concerned y the European CommissionThe other definition "the enrichment of water by nutrients especially compounds of nitrogen and phosphorus, causing an accelerated growth of algae and higher forms of plant life to produce an undesirable disturbance to the balance of organisms and the quality of the water concerned.“ —— by the European Commission