This may, or may not be helpful, but here goes. Drinking lots of water, watery poops, and runny eggs are all normal here, for this time of year, for a couple weeks. Due to the onset of the warmer temps, it does take them a little time to acclimate. In the meantime, they drink a lot of extra water to keep cool. This causes a bit of a chain reaction, regarding poop, and eggs both being more watery than usual. Normally, this straightens itself out, once they acclimate in 10 - 14 days.
Another thing that helps is to make sure they get a little bit of extra calcium during this time. With the extra water, and everything turning a bit more watery, they excrete, and/or dilute the calcium in their system more. Crush, and sprinkle a Tums over their feed, OR add a little liquid calcium to their water, just for the time that they're consuming higher amounts of water.
No, this won't help if there's a more serious condition going on, but as I said, down here, this is normal for this time of year, while they acclimate to the hot weather.