If you have decided to have your baby in a hospital or birthing center, ask if they have a birthing pool. In England, a water birth has become so common, it is considered an option for childbirth and not an alternative. Most English hospitals are now equipped to accommodate the request.
In North America, attitudes are not quite so forward thinking, but an increasing number of hospitals are recognizing the growing demand by women to give birth in water. Some hospitals do have birthing pools or, at the very least, Jacuzzis and hot tubs that are designed for elderly or disabled people but can easily be used by pregnant women. However, be aware that in many hospitals, while it is fine to remain in water during labor, actually giving birth in water is discouraged.
If the hospital you plan to attend does not have a birthing pool, they may still have the facilities available for you to bring in your own pool. Discuss with your doctor or midwife about what your options are for having a water birth in a hospital.