3-In groundwater replenishment system in Orange County, CA, treated domestic sewer is injected into underlying aquifers using injection wells.

True

False

In groundwater replenishment system in Orange County, CA, treated domestic sewer is injected into underlying aquifers using injection wells.

False

Explanation:

In the orange country's water treatment system techniques like micro filtration, and ultraviolet (UV), reverse osmosis (RO) disinfection with hydrogen peroxide are used for purification. Generally at the source polluted water is first micro - filtered for the removal of small suspended particles bacteria, protozoa, and harmful virus from water. The water is then filtered via RO, which removes salts, pesticides, viruses and most organic compounds are passed in the presence of the forced water via thin plastic membrane, and in the final stage, the water is treated with hydrogen peroxide and UV light as a precautionary measure.