What is the primary benefit of using multiple barriers in water treatment?

The primary benefit of using multiple barriers in water treatment is enhanced safety and quality assurance. This approach involves implementing several layers of protection to ensure that water is treated effectively before it reaches consumers. Each barrier, whether it's physical processes like filtration, chemical treatments like chlorination, or biological treatments, addresses different potential contaminants and risks. By relying on multiple methods rather than a single treatment process, the overall safety of the water supply is significantly improved. This redundancy ensures that if one barrier fails or is less effective than expected, others will still provide necessary protection against pathogens, chemicals, and other hazards, ultimately leading to higher quality drinking water.