Hi, can you please update with any new findings once you get them? I'm also in Vegas (NW) and have been having the same "issue" with water loss (quotes because I don't know if it's actually a problem). Since last Sunday, so over 5 days, I've lost 1.25 inches of water, which seems really high to me considering the temperature has actually gone down this week. I don't recall ever having had this steep of a drop in the water level, even in the hottest weeks of the summer here, and it's really worrying me. Did a bucket test last weekend is how I knew what the water level was, but something went wrong because I ended up with MORE water in the bucket, lol. Going to repeat tomorrow and will be happy to share results on Sunday.