I wouldn't think of it as an issue, especially if your pool is completely fenced off - I would lock it too for extra security issues. And if your 'daycare' play area is far enough away from it.
Always ensure that your child receives quality care by taking the time to investigate the provider and by asking for references! We simply cannot verify the claims of every daycare provider.
Updates
We expect providers to keep their listing and available openings up-to-date. However, to prevent oversights, openings expire after 45 days.