Place the beans in a large colander and sort through them to remove and discard any stones or debris.

Rinse the beans and transfer them to the Instant Pot. Add the water, salt, chili powder, cumin, oregano, and several grinds of pepper. Secure the lid on the Instant Pot and Pressure Cook on High for 25 minutes.

Allow the Instant Pot to release pressure naturally. This will take 20 to 30 minutes. When the float valve drops, remove the lid.

Drain and use in your favorite recipe that calls for pinto beans or serve as a side dish with lime and cilantro.