can I send my water damaged phone in for repair?

Apple won't be able to repair your phone. You should look for third party options that can do the work. Apple is more of a toss and replace when it comes to repairing their devices, specially when they have water damage, because they claim they 'want to preserve the great user experience'. Any reputable 3rd party repair service can help you no problem and most likely can help you recover data in your phone or can get your phone back to working condition.

Water damage can not be repaired and the device must be replaced.

Hello! You can try other home methods such as soaking it in rice and leave it for at least 1-2 days although there is no guarantee that this will resolve your problem.