Systems with which type of source water are required by law to treat using filtration and disinfection?

Systems with which type of source water are required by law to treat using filtration and disinfection?

• A. Groundwater
• B. Surface Water
• C. Reclaimed Water
• D. Rainwater

Answer: (A)

The main idea is that water from surface sources must be treated with both filtration and disinfection to protect public health. Surface water can carry more particulates and a higher variety of microorganisms, so filtration helps remove solids and many microbes, while disinfection inactivates remaining pathogens. Groundwater tends to be less exposed to surface contaminants and is often not required to undergo filtration under standard regulations; disinfection is still used, but filtration is typically not mandated unless the groundwater is under the direct influence of surface water. Reclaimed water and rainwater are not generally treated for potable use in the same way, with reclaimed water requiring specialized processes for potential reuse and rainwater usually not serving as a drinking water source without additional treatment. So, systems drawing from surface water are the ones commonly required by law to undergo filtration and disinfection.

The main idea is that water from surface sources must be treated with both filtration and disinfection to protect public health. Surface water can carry more particulates and a higher variety of microorganisms, so filtration helps remove solids and many microbes, while disinfection inactivates remaining pathogens.

Groundwater tends to be less exposed to surface contaminants and is often not required to undergo filtration under standard regulations; disinfection is still used, but filtration is typically not mandated unless the groundwater is under the direct influence of surface water. Reclaimed water and rainwater are not generally treated for potable use in the same way, with reclaimed water requiring specialized processes for potential reuse and rainwater usually not serving as a drinking water source without additional treatment.

So, systems drawing from surface water are the ones commonly required by law to undergo filtration and disinfection.