Although the use of wastewater effluents for irrigation can be very beneficial,it is essential that the effluents are
A)treated and free of pathogens.
B)mixed in with large amounts of phosphorus.
C)mixed in with large amounts of calcium carbonate.
D)not used in regions contacted by humans.

Question

Quizplus · Accepted Answer

The use of wastewater effluents for irrigation can be very beneficial, but it is essential that the effluents are treated and free of pathogens. Pathogens in the effluent can make humans sick and cause environmental contamination. Therefore, Option A is the best choice. Option B is incorrect because excessive phosphorus can cause eutrophication in water bodies. Option C is incorrect because calcium carbonate is not necessary for effluent treatment, and excessive use of calcium carbonate can increase soil pH, leading to nutrient deficiencies. Option D is incorrect because if wastewater effluents are treated properly, they can be safely used for irrigation in regions populated by humans.

Although the Use of Wastewater Effluents for Irrigation Can Be