If you are going to put one of those inflatable kiddy pools in your backyard, you had better have a strong set of lungs. And if you live in Ebensburg, Pennsylvania, you had better have a building permit. Cindy Lenz bought an 18-inch-deep pool for $49 at Wal-Mart. But when she tried to install it, the local government told her she needed a permit. But she's lucky: If the pool had been any deeper, she'd also have been required to fence it off. "If a toddler drowns and we haven't done our jobs, we're in between and get the blame," said a local zoning official.