AgNPs besides their ability to remove toxic phenolic contamination, when releases in the environment causes toxicity as the AgNPs are itself non-biodegradable and toxic. These nanoparticles may accumulate in kidney or other vital organs of mammals or adhere the growth of plants. The reducing agents used to synthesize AgNPs in conventional methods may be toxic chemicals such as NaBH4 and hydrazine which are extremely toxic and potentially carcinogenic. To avoid this more emphasis should be on the green synthesis of AgNPs which includes plants and microbial mediated synthesis. Although these methods are time consuming but their cost effectiveness and non-toxic nature makes them ideal for the synthesis of AgNPs to remove phenol and its derivatives from water system.