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1: What is the limit of sand in well water as recommended by US EPA and National Water Works Association for flood irrigation?

10ppm

1: What is the limit of sand in well water as recommended by US EPA and National Water Works Association for flood irrigation?

15ppm

1: What is the limit of sand in well water as recommended by US EPA and National Water Works Association for flood irrigation?

20ppm

2: What are the two factors that should be ensured when the total head for a ground water pump is calculated?

There is no elevation lift and the drawdown has to be added to the suction lift.

2: What are the two factors that should be ensured when the total head for a ground water pump is calculated?

There is no suction lift. Instead there is static water table and the drawdown has to be added to the elevation lift.

2: What are the two factors that should be ensured when the total head for a ground water pump is calculated?

There is no suction lift and the drawdown has to be deducted from the elevation lift.

3: What determines the minimum flow of a pump?

The amount of water that needs to be applied to the crops during peak periods.

3: What determines the minimum flow of a pump?

The type of soil in the field.

3: What determines the minimum flow of a pump?

The cost of power for the pump.

4: Identify which of the following sentences are true:

Groundwater typically requires more treatment than surface water.

4: Identify which of the following sentences are true:

To improve the filtering function, the borehole diameter must be exactly the same as the casing diameter.

4: Identify which of the following sentences are true:

The drawdown is the difference between the static and the dynamic water level.