How does saltwater intrusion impact the water supply? what are the two correct answers.

1. It improves the water in aquifers near the coast.
2. It decreases the amount of usable drinking water.
3. It causes saltwater to mix with freshwater.
4. It causes over-pumping of water.
5. It recharges aquifers.

1 answer

2. It decreases the amount of usable drinking water.
3. It causes saltwater to mix with freshwater.