Our pool is a little over 2 years old. Noticed the yesterday that the auto fill was operating in the afternoon which was odd and the water level was a bit low. Last night turned off the water to the autofill and found the water level was approximately 2" below normal operating level. Looked for any obviously leaks with non found. My wife however noticed a some rust on the wall of the pool which turned out to be a crack. Started looking more closely at the area directly behind the crack and cement deck and the soil is definitely showing signs of something that is not right. Ny question is what should we expect from the builder? They have been around for years and have a great reputation. They want us to turn off the auto fill and pump and the owner will be out at some point in the next few days? Additional information, we are in the "hills" in central California but have not had any quakes lately. I'm preparing for the worst but am curious if anyone has any ideas.