Which treatment standard is associated with removing contaminants in drinking water?

The treatment standard associated with removing contaminants in drinking water includes filtration, disinfection, and coagulation, making the correct answer all of the above.

Filtration is a crucial process that physically removes particulate matter and microorganisms from water. By passing water through various media, such as sand or activated carbon, filtration captures contaminants, ensuring that the water is clear and free of suspended solids.

Disinfection is another vital treatment standard that involves using chemicals or physical processes to kill or inactivate pathogens in water. Common methods include chlorination, ultraviolet light treatment, and ozonation. This step is essential to ensure that harmful bacteria, viruses, and protozoa are eliminated, promoting safe drinking water.

Coagulation is a chemical process that involves adding coagulants (such as aluminum sulfate) to water to destabilize suspended particles. These particles then clump together (or coagulate), forming larger aggregates that can be removed through sedimentation and filtration. This process enhances the efficiency of subsequent filtration and reduces turbidity, making the water cleaner.

The combination of these three treatment standards—filtration to remove solids, disinfection to eliminate pathogens, and coagulation to improve the effectiveness of these processes—ensures comprehensive contaminant removal from drinking water. Each plays a