In recent years, many countries have decided to ban phosphates use in detergents. Which of the following may be the reason(s) for the same?

  1. Phosphates uses causes eutrophication of waters
  2. Phosphates leads to Biomagnification
  3. Phosphates causes destruction of the stratospheric ozone 
  4. Phosphates leads to formation of ground level ozone

Select the correct option from the codes given below:

Answer: [B] Only 1 & 2

Use of phosphate pollutes lakes, bays and streams. It creates algae blooms and starves fish of oxygen. The major drawback is that secondary wasterwater treatment removes only a small percentage of phosphorus from the influent, so a considerable amount of phosphorus is released to streams, rivers, lakes and estuaries through wastewater effluent. The low solubility of phosphates leads to biomagnification.

This question is a part of GKToday's Integrated IAS General Studies Module