How do you get the gas station to pay for repairs from water in their diesel tank?

To pursue compensation for repairs due to water in a diesel tank from a gas station, first document all evidence, including receipts for repairs, photos, and any communication with the gas station. Then, contact the gas station's management and explain the situation, providing your documentation. If they refuse to pay, consider filing a complaint with your local consumer protection agency or seeking legal advice to explore further options, such as small claims court. Always check if the gas station has insurance that might cover such incidents.